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Cisco CRS Configuration Manual

Cisco CRS Configuration Manual

Ios xr mpls configuration guide
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Download this manual See also: User Manual, Installation Manual
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router,
Release 5.1.x
First Published: February 17, 2014
Last Modified: September 05, 2014
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
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http://www.cisco.com
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Summary of Contents for Cisco CRS

  • Page 1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x First Published: February 17, 2014 Last Modified: September 05, 2014 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000...
  • Page 2 © 2014 Cisco Systems, Inc. All rights reserved.

  • Page 3: Table Of Contents

    Label Advertisement Control (Outbound Filtering) Label Acceptance Control (Inbound Filtering) Local Label Allocation Control Session Protection IGP Synchronization IGP Auto-configuration IGP Synchronization Process Restart Delay LDP Nonstop Routing Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 4 Enabling LDP Auto-Configuration for a Specified OSPF Instance Enabling LDP Auto-Configuration in an Area for a Specified OSPF Instance Disabling LDP Auto-Configuration Configuring LDP Nonstop Routing Configuring LDP Downstream on Demand mode Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 5 Setup a Static LSP Allocate Static MPLS Label to an IP Prefix and Configure a LSP Allocate Static MPLS Label for a Specific VRF Verify MPLS Static Bindings Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 6 How to Implement RSVP Authentication Configuring Global Configuration Mode RSVP Authentication Enabling RSVP Authentication Using the Keychain in Global Configuration Mode Configuring a Lifetime for RSVP Authentication in Global Configuration Mode Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 7 Configuration Examples for RSVP Authentication RSVP Authentication Global Configuration Mode: Example RSVP Authentication for an Interface: Example RSVP Neighbor Authentication: Example RSVP Authentication by Using All the Modes: Example Additional References Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 8 AutoTunnel Attribute-set Link Protection Node Protection Backup AutoTunnel Assignment Explicit Paths Periodic Backup Promotion Protocol-Based CLI Differentiated Services Traffic Engineering Prestandard DS-TE Mode IETF DS-TE Mode Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x viii...
  • Page 9 Fast Reroute Node Protection MPLS-TE Forwarding Adjacency MPLS-TE Forwarding Adjacency Benefits MPLS-TE Forwarding Adjacency Restrictions MPLS-TE Forwarding Adjacency Prerequisites Unequal Load Balancing Path Computation Element Policy-Based Tunnel Selection Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 10 MPLS TE SRLG Scale Enhancements Soft-Preemption Path Option Attributes Configuration Hierarchy of Path Option Attributes Traffic Engineering Bandwidth and Bandwidth Pools Path Option Switchover Path Option and Path Protection Auto-Tunnel Mesh Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 11 Configuring the Ignore Integrated IS-IS Overload Bit Setting in MPLS-TE Configuring GMPLS Configuring IPCC Control Channel Information Configuring Router IDs Configuring OSPF over IPCC Configuring Local and Remote TE Links Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 12 Configuring a Path Computation Element Address Configuring PCE Parameters Configuring Policy-based Tunnel Selection Configuring the Automatic Bandwidth Configuring the Collection Frequency Forcing the Current Application Period to Expire Immediately Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 13 Configuration Examples for Cisco MPLS-TE Configure Fast Reroute and SONET APS: Example Build MPLS-TE Topology and Tunnels: Example Configure IETF DS-TE Tunnels: Example Configure MPLS-TE and Fast-Reroute on OSPF: Example Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x xiii...
  • Page 14 GMPLS LSP Signaling Path Message without an ERO XRO Attribute-set Connection Diversity GMPLS RSVP VRF Signaling DWDM Transponder Integration How to Implement GMPLS UNI Configuring TE for GMPLS UNI Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 15 MPLS Network Management with MPLS LSP Ping and MPLS LSP Traceroute Roles of Various Routers P2MP Ping P2MP Traceroute MPLS OAM Support for BGP 3107 Configure the Ping and Traceroute: Example Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 16 Contents Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 17: Preface

    Preface The Cisco IOS XR MPLS Configuration Guide for the Cisco CRS-1 Router preface contains these sections: • Changes to This Document, page xvii • Obtaining Documentation and Submitting a Service Request, page xvii Changes to This Document This table lists the technical changes made to this document since it was first printed.
  • Page 18 Preface Obtaining Documentation and Submitting a Service Request Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x xviii...

  • Page 19: New And Changed Feature Information In Cisco Ios Xr Release 5.1

    This table summarizes the new and changed feature information for the Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, and tells you where they are documented. For a complete list of new and changed features in Cisco IOS XR Software, Release 5.1.x, see the document. •...
  • Page 20 This feature was introduced. Release 5.1.2 Implementing MPLS Traffic Backup Tunnels Engineering chapter: Soft-preemption over FRR Backup Tunnels, on page 212 Enabling Soft-preemption over FRR Backup Tunnels, on page Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 21 Dynamic ABR Discovery, on page 213 GMPLS RSVP VRF Signaling This feature was introduced. Release 5.1.3 Implementing GMPLS UNI chapter: GMPLS RSVP VRF Signaling, on page 373 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 22: New And Changed Feature Information In Cisco Ios Xr Release 5.1.X

    New and Changed Feature Information in Cisco IOS XR Release 5.1.x New and Changed Feature Information in Cisco IOS XR Release 5.1.x Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 23: Implementing Mpls Label Distribution Protocol

    LDP label advertisement control (Outbound label filtering). Release 3.3.0 Support was added for these features: • Inbound Label Filtering • Local Label Allocation Control • Session Protection • LDP-IGP Synchronization Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 24: Prerequisites For Implementing Cisco Mpls Ldp

    AAA administrator for assistance. • You must be running Cisco IOS XR software. • You must install a composite mini-image and the MPLS package. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 25: Information About Implementing Cisco Mpls Ldp

    The control plane enables label switched routers (LSRs) to discover their potential peer routers and to establish LDP sessions with those peers to exchange label binding information. This figure shows the control messages exchanged between LDP peers. Figure 1: LDP Control Protocol Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 26: Exchanging Label Bindings

    Configuring LDP Discovery for Targeted Hellos: Example, on page 80 Exchanging Label Bindings LDP creates LSPs to perform the hop-by-hop path setup so that MPLS packets can be transferred between the nodes on the MPLS network. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 27: Ldp Forwarding

    Configuring LDP Neighbors: Example, on page 81 LDP Forwarding Once label bindings are learned, the LDP control plane is ready to setup the MPLS forwarding plane as shown in the following figure. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 28 Unlabeled, pops the top label, and passes it to the IP forwarding plane. 9 IP forwarding takes over and forwards the packet onward. Related Topics Setting Up LDP Forwarding, on page 39 Configuring LDP Forwarding: Example, on page 81 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 29: Ldp Graceful Restart

    When a control plane failure occurs, connectivity can be affected. The forwarding states installed by the router control planes are lost, and the in-transit packets could be dropped, thus breaking NSF. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 30: Phases In Graceful Restart

    9 The established LSPs connected to R4 are terminated at R3, resulting in broken LSPs end-to-end from R2 to R4. Phases in Graceful Restart The graceful restart mechanism is divided into different phases: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 31 Related Topics Setting Up LDP NSF Using Graceful Restart, on page 43 Configuring LDP Nonstop Forwarding with Graceful Restart: Example, on page 82 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 32: Recovery With Graceful-Restart

    The peer LSR stops the neighbor reconnect timer (started by the restarting LSR), when the restarting peer connects and starts the neighbor recovery timer. The peer LSR checks the FT Session TLV if the restarting Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 33: Label Advertisement Control (Outbound Filtering)

    Related Topics Configuring Label Acceptance Control (Inbound Filtering), on page 46 Configuring Label Acceptance (Inbound Filtering): Example, on page 82 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 34: Local Label Allocation Control

    R1 and R3. If the direct link fails, LDP link adjacency is destroyed, but the session is kept up and 1 For L3VPN Inter-AS option C, LDP may also be required to assign local labels for some BGP prefixes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 35: Igp Synchronization

    LDP provides a configuration option to delay declaring synchronization up for up to 60 seconds. LDP communicates this information to IGP upon linkup or session down events. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 36: Igp Auto-Configuration

    LDP fails or restarts. This delay defers the sending of sync-up events to the IGP until most or all the LDP sessions converge and also allows the LDP to stabilize. This allows the LDP Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 37: Ldp Nonstop Routing

    RP switchover is configured as a recovery action. For more information about how to configure switchover as a recovery action for NSR, see Configuring Transports module in Cisco IOS XR IP Addresses and Services Configuration Guide for the Cisco CRS Router.
  • Page 38 For more information about configuring the IP Fast Reroute Loop-free alternate , see Implementing IS-IS on Cisco IOS XR Software module of the Cisco IOS XR Routing Configuration Guide for the Cisco CRS Router. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 39: Downstream On Demand

    A backbone carrier offers Border Gateway Protocol and Multiprotocol Label Switching (BGP/MPLS) VPN services. The customer carrier can be either: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 40: Benefits Of Mpls Ldp Csc

    The backbone carrier can accept customer carriers who are ISPs or VPN service providers or both. The backbone carrier can accommodate customer carriers that require security and various bandwidths. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 41: Multiple Vrf Support

    This means that an interface remains LDP operationally down for which either: • LDP has not received any address update, or • LDP has received update with different table-id (VRF) than configured under LDP. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 42: Context Isolation

    • When LDP CSC is configured and in use: ◦ BGP label allocation policy for VRF prefixes must be per-prefix ◦ Selective VRF Download (SVD) feature must be disabled Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 43: How To Implement Mpls Ldp

    { hello | targeted-hello } holdtime Specifies the time that a discovered neighbor is kept without receipt seconds of any subsequent hello messages. The default value for the seconds Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 44: Rp/0/Rp0/Cpu0:Router(Config-Ldp)

    Displays the LDP parameters for the specified VRF. RP/0/RP0/CPU0:router # show mpls ldp parameters RP/0/RP0/CPU0:router # show mpls ldp vrf red parameters Related Topics LDP Control Plane, on page 7 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 45: Configuring Ldp Discovery Over A Link

    Example: RP/0/RP0/CPU0:router(config)# mpls ldp Step 3 [vrf vrf-name] router-id lsr-id (Optional) Specifies a non-default VRF. Specifies the router ID of the local node. Example: RP/0/RP0/CPU0:router(config-ldp)# router-id 192.168.70.1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 46: Step 6 Use The Commit Or End Command

    (Optional) Displays the brief status of the LDP discovery process for all VRFs. Example: RP/0/RP0/CPU0:router# show mpls ldp vrf all discovery brief Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 47: Configuring Ldp Discovery For Active Targeted Hellos

    ID. Please note that default router IDs are subject to change and may cause an unstable discovery. • One or more MPLS Traffic Engineering tunnels are established between non-directly connected LSRs. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 48: Commit-Saves The Configuration Changes And Remains Within The

    • Yes— Saves configuration changes and exits the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 49 Example: RP/0/RP0/CPU0:router# show mpls ldp discovery summary all Related Topics LDP Control Plane, on page 7 Configuring LDP Discovery for Targeted Hellos: Example, on page 80 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 50: Configuring Ldp Discovery For Passive Targeted Hellos

    • In Cisco IOS XR software, the router ID is specified as an RP/0/RP0/CPU0:router(config-ldp)# interface IP address or LSR ID. By default, LDP uses the global router-id 192.168.70.1 router ID (configured by global router ID process). Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 51: Yes- Saves Configuration Changes And Exits The Configuration

    (Optional) Displays the brief status of the LDP discovery process for all VRFs. Example: RP/0/RP0/CPU0:router# show mpls ldp vrf all discovery brief Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 52: Configuring Label Advertisement Control (Outbound Filtering)

    3. [vrf vrf-name] address-family { ipv4} 4. label local advertise [ to ldp-id for prefix-acl | interface type interface-path-id ] 5. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 53 • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Label Advertisement Control (Outbound Filtering), on page 15 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 54: Setting Up Ldp Neighbors

    Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 mpls ldp Enters MPLS LDP configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls ldp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 55 Step 8 [vrf vrf-name] neighbor ldp-id password [ (Optional) Specifies a non-default VRF. encrypted ] password Configures password authentication (using the TCP MD5 option) for a given neighbor. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 56 Displays the brief LDP session neighbor information for all VRFs. Example: RP/0/RP0/CPU0:router# show mpls ldp vrf all neighbor brief Step 14 clear mpls ldp neighbor (Optional) Resets an LDP session. Example: RP/0/RP0/CPU0:router# clear mpls ldp neighbor Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 57: Setting Up Ldp Forwarding

    If you do not assign a router ID to the routers, the system will default to the global router ID. Default router IDs are subject to change and may cause an unstable discovery. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 58 Step 5 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 59 (Optional) Displays a global view of all MPLS installed forwarding states (rewrites) by various applications (LDP, TE, and static). Example: RP/0/RP0/CPU0:router# show mpls forwarding Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 60: Configuring Global Transport Address

    RP/0/RP0/CPU0:router# configure Step 2 mpls ldp Enters MPLS LDP configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls ldp Step 3 address-family ipv4 Enables LDP IPv4 address family. Example: RP/0/RP0/CPU0:router(config-ldp)# address-family ipv4 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 61: Setting Up Ldp Nsf Using Graceful Restart

    If you do not assign a router ID to the routers, the system will default to the global router ID. Default router IDs are subject to change and may cause an unstable discovery. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 62 RP/0/RP0/CPU0:router(config-ldp)# interface POS 0/1/0/0 RP/0/RP0/CPU0:router(config-ldp-if)# Step 4 exit Exits the current configuration mode. Example: RP/0/RP0/CPU0:router(config-ldp-if)# exit Step 5 graceful-restart Enables the LDP graceful restart feature. Example: RP/0/RP0/CPU0:router(config-ldp)# graceful-restart Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 63 Displays the status of the LDP session with its neighbors. This command can be run with various filters as well as with the brief Example: option. RP/0/RP0/CPU0:router# show mpls ldp neighbor Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 64: Configuring Label Acceptance Control (Inbound Filtering)

    SUMMARY STEPS 1. configure 2. mpls ldp 3. [vrf vrf-name] address-family { ipv4} 4. label remote accept from ldp-id for prefix-acl 5. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 65 • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Label Acceptance Control (Inbound Filtering), on page 15 Configuring Label Acceptance (Inbound Filtering): Example, on page 82 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 66: Configuring Local Label Allocation Control

    Step 5 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 67: Configuring Session Protection

    Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 mpls ldp Enters the MPLS LDP configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls ldp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 68: Configuring Ldp Igp Synchronization: Ospf

    Configuring LDP Session Protection: Example, on page 83 Configuring LDP IGP Synchronization: OSPF Perform this task to configure LDP IGP Synchronization under OSPF. By default, there is no synchronization between LDP and IGPs. Note Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 69 RP/0/RP0/CPU0:router(config-ospf)# vrf red Step 4 Use one of the following commands: Enables LDP IGP synchronization on an interface. • mpls ldp sync • area area-id mpls ldp sync Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 70 Displays the LDP IGP synchronization information for all VRFs for address family IPv4. Example: RP/0/RP0/CPU0:router# show mpls ldp vrf all ipv4 igp sync Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 71: Disabling Ldp Igp Synchronization: Ospf

    5. (Optional) Use one of the following commands: • area area-id mpls ldp sync disable • area area-id interface name mpls ldp sync disable 6. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 72 POS 0/2/0/0 mpls ldp sync disable Step 6 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 73: Configuring Ldp Igp Synchronization: Isis

    Example: RP/0/RP0/CPU0:router# configure Step 2 router isis instance-id Enables the Intermediate System-to-Intermediate System (IS-IS) routing protocol and defines an IS-IS instance. Example: RP/0/RP0/CPU0:router(config)# router isis RP/0/RP0/CPU0:router(config-isis)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 74: Configuring Ldp Igp Synchronization Delay Interval

    Perform this task to configure the LDP IGP synchronization delay interval. By default, LDP does not delay declaring sync up as soon as convergence conditions are met. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 75 • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics IGP Synchronization, on page 17 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 76: Configuring Ldp Igp Synchronization Process Restart Delay

    Step 4 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 77: Enabling Ldp Auto-Configuration For A Specified Ospf Instance

    5. interface type interface-path-id 6. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 78 • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics IGP Auto-configuration, on page 18 Configuring LDP Auto-Configuration: Example, on page 84 Disabling LDP Auto-Configuration, on page 62 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 79: Enabling Ldp Auto-Configuration In An Area For A Specified Ospf Instance

    Example: Either a decimal value or an IP address. RP/0/RP0/CPU0:router(config-ospf)# area 8 RP/0/RP0/CPU0:router(config-ospf-ar)# Step 4 mpls ldp auto-config Enables LDP auto-configuration. Example: RP/0/RP0/CPU0:router(config-ospf-ar)# mpls ldp auto-config Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 80: Disabling Ldp Auto-Configuration

    SUMMARY STEPS 1. configure 2. mpls ldp 3. interface type interface-path-id 4. igp auto-config disable 5. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 81: Configuring Ldp Nonstop Routing

    Related Topics IGP Auto-configuration, on page 18 Configuring LDP Auto-Configuration: Example, on page 84 Configuring LDP Nonstop Routing Perform this task to configure LDP NSR. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 82 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 83 (Optional) show mpls ldp vrf all nsr summary Displays all LDP configured VRF (including default VRF) summarized information. Example: RP/0/RP0/CPU0:router# show mpls ldp vrf all nsr summary Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 84: Configuring Ldp Downstream On Demand Mode

    Enters MPLS LDP configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls Step 3 [vrf vrf-name session] (Optional) Enters downstream on demand label advertisement mode under the specified non-default VRF. downstream-on-demand Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 85: Redistributing Mpls Ldp Routes Into Bgp

    Perform this task to redistribute Border Gateway Protocol (BGP) autonomous system into an MPLS LDP. SUMMARY STEPS 1. configure 2. mpls ldp 3. redistribute bgp 4. end or commit 5. show run mpls ldp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 86 Step 5 Displays information about the redistributed route information. show run mpls ldp Example: RP/0/RP0/CPU0:router# show run mpls ldp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 87: Enabling Mldp

    • Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes. • Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 88: Enabling Mldp Make-Before-Break

    Enters MPLS LDP configuration mode. mpls ldp Example: RP/0/RP0/CPU0:router(config)# mpls ldp Step 3 mldp Enables MLDP. Example: RP/0/RP0/CPU0:router(config-ldp)# mldp Step 4 address-family ipv4 Enables MLDP for IPv4 address family. Example: RP/0/RP0/CPU0:router(config-ldp-mldp)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 89: Enabling Mldp Mofrr

    Perform this task to enable multicast only fast reroute (MoFRR) support in MPLS MLDP. SUMMARY STEPS 1. configure 2. mpls ldp 3. mldp 4. address-family ipv4 5. mofrr 6. end or commit Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 90 (config-ldp-mldp-af)# commit the router to EXEC mode. • Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 91: Enabling Mldp Recursive Fec

    Enters Global Configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 mpls ldp Enters MPLS LDP configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls ldp Step 3 mldp Enables MLDP. Example: RP/0/RP0/CPU0:router(config-ldp)# mldp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 92: Enabling Mldp Static Multipoint To Multipoint Lsp

    Enabling MLDP Static Multipoint to Multipoint LSP Perform this task to enable static multipoint to multipoint (MP2MP) LSP support in MPLS MLDP. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 93 10.10.10.10 1 Step 6 end or commit • When you issue the end command, the system prompts you to commit changes: Uncommitted changes found, commit them before Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 94: Enabling Mldp Static Point To Multipoint Lsp

    4. address-family ipv4 5. static p2mp ip-address 6. end or commit DETAILED STEPS Command or Action Purpose Step 1 configure Enters Global Configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 95 • Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 96: Disabling Mldp

    Step 4 address-family {ipv4 } Enables the LDP IPv4 address family. Example: RP/0/RP0/CPU0:router(config-ldp-if)# address-family ipv4 Step 5 igp mldp disable Disables MLDP. Example: RP/0/RP0/CPU0:router(config-ldp-if-af)# igp mldp disable Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 97: Configuration Examples For Implementing Mpls Ldp

    The example shows how to configure LDP discovery parameters. mpls ldp router-id 192.168.70.1 discovery hello holdtime 15 discovery hello interval 5 show mpls ldp parameters show mpls ldp discovery Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 98: Configuring Ldp Link: Example

    The example shows how to configure LDP label advertisement control. mpls ldp address-family ipv4 label local advertise disable for pfx_acl_1 to peer_acl_1 for pfx_acl_2 to peer_acl_2 for pfx_acl_3 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 99: Configuring Ldp Neighbors: Example

    Related Topics Setting Up LDP Forwarding, on page 39 LDP Forwarding, on page 9 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 100: Configuring Ldp Nonstop Forwarding With Graceful Restart: Example

    Label Acceptance Control (Inbound Filtering), on page 15 Configuring Local Label Allocation Control: Example The example shows how to configure local label allocation control. mpls ldp address-family ipv4 label local allocate for pfx_acl_1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 101: Configuring Ldp Session Protection: Example

    100 interface POS 0/2/0/0 address-family ipv4 unicast mpls ldp sync mpls ldp igp sync delay 30 Related Topics Configuring LDP IGP Synchronization: ISIS, on page 55 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 102: Configuring Ldp Auto-Configuration: Example

    # GigabitEthernet0/6/0/33 in LFA backup path computation. fast-reroute per-prefix exclude interface GigabitEthernet0/6/0/33 interface GigabitEthernet0/6/0/23 point-to-point address-family ipv4 unicast interface GigabitEthernet0/6/0/24 point-to-point address-family ipv4 unicast interface GigabitEthernet0/6/0/33 point-to-point address-family ipv4 unicast Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 103 GigabitEthernet0/6/0/13 point-to-point address-family ipv4 unicast fast-reroute per-prefix interface GigabitEthernet0/1/0/13 point-to-point address-family ipv4 unicast fast-reroute per-prefix interface GigabitEthernet0/3/0/0.1 point-to-point address-family ipv4 unicast interface GigabitEthernet0/3/0/0.2 point-to-point address-family ipv4 unicast Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 104: Verify Ip Ldp Fast Reroute Loop Free Alternate: Example

    The following example shows how to verify the IGP route 211.1.1.1/24 in FIB output: RP/0/RP0/CPU0:router#show cef 211.1.1.1/24 211.1.1.0/24, version 0, internal 0x40040001 (ptr 0x9d9e1a68) [1], 0x0 (0x9ce0ec40), 0x4500 (0x9e2c69e4) Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 105 20.20.20.20:0 ] 16079 Gi0/6/0/0.3 14.0.2.2 (!) [ Backup; path-id 33; peer 40.40.40.40:0 ] Routing update : Nov 27 10:22:19.560 (1d08h ago) Forwarding update: Nov 27 10:22:29.060 (1d08h ago) Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 106: Mpls Ldp Csc For Multiple Vrfs Configuration: Examples

    POS0/2/0/2 ipv4 address 192.168.3.11 255.255.255.0 router ospf 100 log adjacency changes router-id 11.11.11.11 area 0 interface Loopback0 interface POS0/2/0/0 interface POS0/2/0/1 interface POS0/2/0/2 mpls ldp adjacency Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 107 11.11.11.12 address-family ipv4 interface POS0/2/0/0 address-family ipv4 no interface POS0/2/0/0 shut CSC-CE13 Configuration hostname ce13 interface Loopback0 ipv4 address 11.11.11.11 255.255.255.255 interface POS0/2/0/0 ipv4 address 192.170.1.12 255.255.255.0 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 108 193.168.1.2 remote-as 100 address-family ipv4 labeled-unicast route-policy pass-all in route-policy pass-all out neighbor 193.169.1.22 remote-as 100 address-family ipv4 labeled-unicast route-policy pass-all in route-policy pass-all out Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 109 192.170.1.1 255.255.255.0 interface POS0/2/0/4 ipv4 address 12.1.0.1 255.255.255.0 ipv6 address 12:1::1/120 interface POS0/2/0/5 ipv4 address 122.1.0.1 255.255.255.0 router static address-family ipv6 unicast 2:2:2::2/128 POS0/2/0/4 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 110 1:1 address-family ipv4 unicast maximum-paths eibgp 8 redistribute ospf 100 mpls ldp adjacency neighbor router-id 1.1.1.1 address-family ipv4 label local advertise explicit-null Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 111 POS0/2/0/5 shut CSC-PE2 Configuration hostname pe2 vrf red address-family ipv4 unicast import route-target 100:1 export route-target 100:1 interface Loopback0 ipv4 address 2.2.2.2 255.255.255.255 ipv6 address 2:2:2::2/128 interface Loopback1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 112 193.168.1.21 remote-as 2 address-family ipv4 labeled-unicast route-policy pass-all in route-policy pass-all out mpls ldp adjacency neighbor router-id 2.2.2.2 address-family ipv4 label local advertise explicit-null Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 113 100 area 0 interface Loopback1 interface POS0/2/0/0 router bgp 100 address-family ipv4 unicast address-family vpnv4 unicast neighbor 2.2.2.22 remote-as 100 update-source Loopback0 address-family vpnv4 unicast Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 114 122.1.0.22 255.255.255.0 interface POS0/2/0/1 vrf red ipv4 address 193.169.1.22 255.255.255.0 interface POS0/2/0/2 ipv4 address 112.1.0.22 255.255.255.0 route-policy pass-all pass end-policy router static vrf red address-family ipv4 unicast Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 115 POS0/2/0/1 shut no interface POS0/2/0/2 shut The following example shows the output for the show running-config mpls ldp command. RP/0/RSP0/CPU0:router# show running-config mpls ldp mpls ldp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 116 GigabitEthernet0/0/0/0 explicit-null for pfx_acl1 to peer_acl1 remote accept from 2.2.2.2:0 for pfx_acl2 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 117: Additional References

    Cisco CRS Router. Standards Standards Title No new or modified standards are supported by this — feature, and support for existing standards has not been modified by this feature. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 118 Registered Cisco.com users can log in from this page to access even more content. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 119: Implementing Mpls Static Labeling

    • Static labeling on IPv6 packets is not supported. • The router does not prevent label discrepancy at the time of configuring static labels. Any generated discrepancy needs to be subsequently cleared. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 120: Enable Mpls Encapsulation On An Interface

    2. mpls static 3. interface interface 4. Use the commit or end command. DETAILED STEPS Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global configuration mode. Step 2 mpls static Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 121: Define A Range For Static Mpls Labels

    The allocable range for MPLS labels is from 16 to 1048575. Label values from 0 to15 are reserved according to RFC-3032. SUMMARY STEPS 1. configure 2. mpls label range minimum_value maximum_value 3. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 122: Setup A Static Lsp

    3. address-family ipv4 unicast 4. local-label label-value allocate 5. forward path path_id nexthop nexthop_address interface_type interface_id out-label outgoing_label 6. Use the commit or end command. DETAILED STEPS Step 1 configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 123: Allocate Static Mpls Label To An Ip Prefix And Configure A Lsp

    Static MPLS label bindings for IP prefixes are used by MPLS applications such as Label Distribution Protocol (LDP) or Border Gateway Protocol (BGP) for MPLS switching. It is possible to define a static LSP for the static label. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 124 For packets that are received with the label, 30500, the MPLS protocol removes the existing label. After removing the label, it forwards the packets to the next hop through the egress interface, GigabitEthernet 0/0/0/4. Step 6 Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 125: Allocate Static Mpls Label For A Specific Vrf

    Example: RP/0/RP0/CPU0:router# configure Enters global configuration mode. Step 2 mpls static Example: RP/0/RP0/CPU0:router(config)# mpls static Enters MPLS-static configuration mode. Step 3 vrf vrf_name address-family ipv4 unicast Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 126: Verify Mpls Static Bindings

    SUMMARY STEPS 1. show mpls static local-label label_value 2. show mpls label range 3. show mpls lsd forwarding DETAILED STEPS Step 1 show mpls static local-label label_value Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 127: Identify And Clear Label Discrepancy

    Complete these steps to identify and clear the discrepancies. Step 1 To identify a label discrepancy, execute one of these: • show mpls static local-label discrepancy • show log Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 128 Clears label discrepancy by allocating a new label to those IP prefixes that are allocated dynamic label. The static label configuration takes precedence while clearing discrepancy. Traffic can be affected while clearing discrepancy. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 129: Implementing Rsvp For Mpls-Te And Mpls O-Uni

    Release 3.3.0 No modification. Release 3.4.0 No modification. Release 3.4.1 Support was added for RSVP authentication. Release 3.5.0 No modification. Release 3.6.0 No modification. Release 3.7.0 No modification. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 130: Prerequisites For Implementing Rsvp For Mpls-Te And Mpls O-Uni

    RSVP is a network control protocol that enables Internet applications to signal LSPs for MPLS-TE, and LSPs for O-UNI. The RSVP implementation is compliant with the IETF RFC 2205, RFC 3209, and OIF2000.125.7. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 131: Lsp Setup

    RSVP signaling messages are exchanged on a control channel, and the corresponding data channel to be used is acquired from the LMP Manager module based on the control channel. Also the O-UNI LSP’s are by default bidirectional while the MPLS-TE LSP’s are uni-directional. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 132: High Availability

    This is called control channel failure. • Control plane of a node fails but the node preserves its data forwarding states. This is called node failure. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 133: Graceful Restart: Standard And Interface-Based

    Graceful Restart: Standard and Interface-Based When you configure RSVP graceful restart, Cisco IOS XR software sends and expects node-id address based Hello messages (that is, Hello Request and Hello Ack messages). The RSVP graceful restart Hello session is not established if the neighbor router does not respond with a node-id based Hello Ack message.

  • Page 134: Graceful Restart: Figure

    If the neighbor does not reply with hello messages or replies with hello messages that do not Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 135: Acl-Based Prefix Filtering

    • Specifies two traps (NetFlow and LostFlow) which are triggered when a new flow is created or deleted. • Lets you use SNMP to access objects belonging to RSVP. Related Topics Enabling RSVP Traps, on page 132 Enable RSVP Traps: Example, on page 150 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 136: Information About Implementing Rsvp Authentication

    Before implementing RSVP authentication, you must configure a keychain first. The name of the keychain must be the same as the one used in the keychain configuration. For more information about configuring keychains, see Cisco IOS XR System Security Configuration Guide for the Cisco CRS Router. Note RSVP authentication supports only keyed-hash message authentication code (HMAC) type algorithms.

  • Page 137: Global, Interface, And Neighbor Authentication Modes

    Configuring a Lifetime for RSVP Authentication in Global Configuration Mode, on page 135 RSVP Authentication Global Configuration Mode: Example, on page 150 Specifying the RSVP Authentication Keychain in Interface Mode, on page 137 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 138: Security Association

    The lifetime timer periodically checks if the SA is being used. If so, the flag is cleared and is cleaned up for the next period unless it is marked again. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 139: Key-Source Key-Chain

    RSVP handles rollover by using the following key ID types: • On TX, use the youngest eligible key ID. • On RX, use the key ID that is received in an integrity object. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 140: Guidelines For Window-Size And Out-Of-Sequence Messages

    RSVP requires coordination among several routers, establishing exchange of RSVP messages to set up LSPs. Depending on the client application, RSVP requires some basic configuration, as described in these topics: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 141: Configuring Traffic Engineering Tunnel Bandwidth

    4. bandwidth total-bandwidth max-flow sub-pool sub-pool-bw 5. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 Enters global configuration mode. configure Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 142: Configuring Mpls O-Uni Bandwidth

    For this application you do not need to configure bandwidth for the data channel or the control channel. There is no other specific RSVP configuration needed for this application. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 143: Enabling Graceful Restart

    Step 5 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 144: Configuring Acl-Based Prefix Filtering

    The extended ACL needs to be configured separately using extended ACL configuration commands. Note SUMMARY STEPS 1. configure 2. rsvp 3. signalling prefix-filtering access-list 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 145: Configuring Rsvp Packet Dropping

    Perform this task to configure RSVP to drop RA packets when the ACL match returns an implicit (default) deny. The default behavior performs normal RSVP processing on RA packets when the ACL match returns an implicit (default) deny. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 146 Related Topics Overview of RSVP for MPLS-TE and MPLS O-UNI , on page 112 Set DSCP for RSVP Packets: Example, on page 149 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 147: Verifying Rsvp Configuration

    Path message is not making it to the egress (tail) router or the reservation message is not making it back to the router R1 in question. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 148 Reliable summary refresh: Disabled. Ack hold: 400 ms, Ack max size: 4096 bytes. Retransmit: 900ms. Neighbor information: Neighbor-IP Nbor-MsgIds States-out Refresh-Reduction Expiry(min::sec) -------------- -------------- ---------- ------------------ ---------------- 64.64.64.65 1 1 Enabled 14::45 Step 5 show rsvp graceful-restart Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 149 0xXXXXXXXX Out of order messages: 0 Retransmitted messages: 0 Interface Neighbor: 2.2.2.2 Interface: POS0/1/0/0 Refresh Reduction: "Enabled" or "Disabled". Remote epoch: 0xXXXXXXXX Out of order messages: 0 Retransmitted messages: 0 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 150: Enabling Rsvp Traps

    Sends RSVP notifications to enable RSVP NewFlow traps. Example: RP/0/RP0/CPU0:router(config)# snmp-server traps rsvp new-flow Step 4 snmp-server traps rsvp all Sends RSVP notifications to enable all RSVP MIB traps. Example: RP/0/RP0/CPU0:router(config)# snmp-server Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 151: How To Implement Rsvp Authentication

    Perform this task to enable RSVP authentication for cryptographic authentication by specifying the keychain in global configuration mode. You must configure a keychain before completing this task (see Cisco IOS XR System Security Note Configuration Guide for the Cisco CRS Router).
  • Page 152 • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Key-source Key-chain, on page 121 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 153: Configuring A Lifetime For Rsvp Authentication In Global Configuration Mode

    • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 154: Configuring The Window Size For Rsvp Authentication In Global Configuration Mode

    Size of the window to restrict out-of-sequence messages. The range is from 1 to 64. The default value is 1, in which case all out-of-sequence messages are dropped. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 155: Configuring An Interface For Rsvp Authentication

    Specifying the RSVP Authentication Keychain in Interface Mode Perform this task to specify RSVP authentication keychain in interface mode. You must configure a keychain first (see Cisco IOS XR System Security Configuration Guide for the Cisco CRS Router). SUMMARY STEPS 1.
  • Page 156 • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Global, Interface, and Neighbor Authentication Modes, on page 119 RSVP Authentication by Using All the Modes: Example, on page 152 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 157: Configuring A Lifetime For An Interface For Rsvp Authentication

    30 to 86400. The default value is 1800. Step 5 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 158: Configuring The Window Size For An Interface For Rsvp Authentication

    Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 rsvp interface type interface-path-d Enters RSVP interface configuration mode. Example: RP/0/RP0/CPU0:router(config)# rsvp interface POS 0/2/1/0 RP/0/RP0/CPU0:router(config-rsvp-if)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 159: Configuring Rsvp Neighbor Authentication

    Specifying the Keychain for RSVP Neighbor Authentication, on page 142 • Configuring a Lifetime for RSVP Neighbor Authentication, on page 143 • Configuring the Window Size for RSVP Neighbor Authentication, on page 144 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 160: Specifying The Keychain For Rsvp Neighbor Authentication

    Configuring RSVP Neighbor Authentication Specifying the Keychain for RSVP Neighbor Authentication Perform this task to specify the keychain RSVP neighbor authentication. You must configure a keychain first (see Cisco IOS XR System Security Configuration Guide for the Cisco CRS Router). SUMMARY STEPS 1.

  • Page 161: Configuring A Lifetime For Rsvp Neighbor Authentication

    IP address of the neighbor. A single IP address for a specific 1.1.1.1 authentication neighbor; usually one of the neighbor's physical or logical RP/0/RP0/CPU0:router(config-rsvp-nbor-auth)# (loopback) interfaces. authentication Configures the RSVP authentication parameters. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 162: Configuring The Window Size For Rsvp Neighbor Authentication

    Perform this task to configure the RSVP neighbor authentication window size to check the validity of the sequence number received. SUMMARY STEPS 1. configure 2. rsvp neighbor IP address authentication 3. window-size N 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 163 Guidelines for Window-Size and Out-of-Sequence Messages, on page 122 RSVP Authentication by Using All the Modes: Example, on page 152 RSVP Authentication for an Interface: Example, on page 151 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 164: Verifying The Details Of The Rsvp Authentication

    RSVP reservations on POS interface 0/3/0/0 to 7500 kbps, and allows each single flow to reserve no more than 1000 kbps. rsvp interface pos 0/3/0/0 bandwidth mam 7500 1000 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 165: Bandwidth Configuration (Rdm): Example

    The example shows how to change the acknowledge hold time from the default value of 400 ms, to delay or speed up sending of ACKs, and the maximum acknowledgment message size from default size of 4096 bytes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 166: Summary Refresh Message Size Configuration: Example

    Enable Interface-Based Graceful Restart: Example The example shows how to enable the RSVP graceful restart feature on an interface. RP/0/RP0/CPU0:router#configure RP/0/RP0/CPU0:router(config-rsvp)#interface bundle-ether 17 RP/0/RP0/CPU0:router(config-rsvp-if)#signalling hello graceful-restart ? Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 167: Change The Restart-Time: Example

    Set DSCP for RSVP Packets: Example The configuration example sets the Differentiated Services Code Point (DSCP) field in the IP header of RSVP packets. rsvp interface pos0/2/0/1 signalling dscp 20 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 168: Enable Rsvp Traps: Example

    The configuration example enables authentication of all RSVP messages and increases the default lifetime of the SAs. rsvp authentication key-source key-chain default_keys life-time 3600 Note The specified keychain (default_keys) must exist and contain valid keys, or signaling will fail. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 169: Rsvp Authentication For An Interface: Example

    10.0.0.1 authentication key-source key-chain nbr_keys Related Topics Specifying the Keychain for RSVP Neighbor Authentication, on page 142 Key-source Key-chain, on page 121 Security Association, on page 120 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 170: Rsvp Authentication By Using All The Modes: Example

    Configuring a Lifetime for an Interface for RSVP Authentication, on page 139 RSVP Authentication Design, on page 118 Additional References For additional information related to implementing GMPLS UNI, refer to the following references: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 171 URL and choose a platform under the Cisco Access Products menu: http://cisco.com/public/sw-center/netmgmt/cmtk/ mibs.shtml RFCs RFCs Title RFC 3471 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional Description Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 172 Registered Cisco.com users can log in from this page to access even more content. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 173: Implementing Mpls Forwarding

    Restrictions for Implementing Cisco MPLS Forwarding, page 156 • Information About Implementing MPLS Forwarding, page 156 • How to Implement MPLS Forwarding, page 158 • Additional References, page 161 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 174: Prerequisites For Implementing Cisco Mpls Forwarding

    Restrictions for Implementing Cisco MPLS Forwarding • Label switching on a Cisco router requires that Cisco Express Forwarding (CEF) be enabled. • CEF is mandatory for Cisco IOS XR software and it does not need to be enabled explicitly. Information About Implementing MPLS Forwarding...

  • Page 175: Label Switching Functions

    Label Distribution Protocol (LDP) Supports MPLS forwarding along normally routed paths. Resource Reservation Protocol (RSVP) Supports MPLS traffic engineering. Border Gateway Protocol (BGP) Supports MPLS virtual private networks (VPNs). Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 176: Mfi Control-Plane Services

    • Label swapping Time-to-Live Propagation in Hierarchical MPLS Cisco IOS XR software provides the flexibility to enable or disable the time-to-live (TTL) propagation for locally generated packets that are independent of packets forwarded form a customer edge (CE) device. The IP header contains a field of 8 bits that signifies the time that a packet still has before its life ends and is dropped.

  • Page 177: Configuring The Time-To-Live Propagation In Hierarchical Mpls

    • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Time-to-Live Propagation in Hierarchical MPLS, on page 158 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 178: Configuring The Size Of The Local Label

    Step 4 show mpls label range Displays the range of local labels available for use on packet interfaces. Example: RP/0/RP0/CPU0:router# show mpls label range Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 179: Additional References

    To locate and download MIBs using Cisco IOS XR software, use the Cisco MIB Locator found at the following URL and choose a platform under the Cisco Access Products menu: http://cisco.com/public/ sw-center/netmgmt/cmtk/mibs.shtml Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 180 RFC 3031 Multiprotocol Label Switching Architecture RFC 3443 Time to Live (TTL) Processing in Multi-Protocol Label Switching (MPLS) Networks RFC 4105 Requirements for Inter-Area MPLS Traffic Engineering Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 181: Implementing Mpls Traffic Engineering

    Support was added for Flexible Name-based Tunnel Constraints, Interarea MPLS-TE, MPLS-TE Forwarding Adjacency, GMPLS Protection and Restoration, and GMPLS Path Protection. Release 3.4.1 Support was added for MPLS-TE and fast reroute link bundling. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 182 The Auto-Tunnel Mesh feature was added. Release 4.2.0 Support was added for the following features: • Soft-Preemption • Path Option Attributes Release 4.2.1 The Auto-Tunnel Attribute-set feature was added for auto-backup tunnels. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 183: Prerequisites For Implementing Cisco Mpls Traffic Engineering

    IDs required for each command. If you suspect user group assignment is preventing you from using a command, contact your AAA administrator for assistance. • Router that runs Cisco IOS XR software . Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 184: Information About Implementing Mpls Traffic Engineering

    RSVP. The path that an LSP uses is determined by the LSP resource requirements and network resources, such as bandwidth. Available resources are flooded by means of extensions to a link-state-based Interior Gateway Protocol (IGP). Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 185 Related Topics Building MPLS-TE Topology, on page 213 Creating an MPLS-TE Tunnel, on page 216 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 186: Mpls Traffic Engineering

    Currently, auto-tunnel backups are created with the default values of all tunnel attributes. To support configurable attributes for auto-tunnel backup, it is required to configure attribute-set and assign it to the Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 187: Link Protection

    They protect LSPs by enabling the node upstream of a link or node failure to reroute the LSPs and their traffic around a node failure to the next-hop node. NNHOP backup tunnels also provide protection from link failures because they bypass the failed link and the node. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 188: Backup Autotunnel Assignment

    In order that the Backup AutoTunnel feature operates successfully, the following configuration must be applied at global configuration level: ipv4 unnumbered mpls traffic-eng Loopback 0 The Loopback 0 is used as router ID. Note Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 189: Explicit Paths

    Note Protocol-Based CLI Cisco IOS XR software provides a protocol-based command line interface. The CLI provides commands that can be used with the multiple IGP protocols supported by MPLS-TE. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 190: Differentiated Services Traffic Engineering

    Bandwidth Configuration (RDM): Example, on page 147 Prestandard DS-TE Mode Prestandard DS-TE uses the Cisco proprietary mechanisms for RSVP signaling and IGP advertisements. This DS-TE mode does not interoperate with third-party vendor equipment. Note that prestandard DS-TE is enabled only after configuring the sub-pool bandwidth values on MPLS-enabled interfaces.

  • Page 191: Bandwidth Constraint Models

    IETF DS-TE mode provides support for the RDM and MAM bandwidth constraints models. Both models support up to two bandwidth pools. Cisco IOS XR software provides global configuration for the switching between bandwidth constraint models. Both models can be configured on a single interface to preconfigure the bandwidth constraints before swapping to an alternate bandwidth constraint model.

  • Page 192: Te Class Mapping

    • Periodic timer expires (this does not depend on bandwidth pool type). • Tunnel origination node has out-of-date information for either available global pool or sub-pool bandwidth, causing tunnel admission failure at the midpoint. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 193: Flooding Thresholds

    • Primary tunnel and a backup tunnel should intersect at least at two points (nodes) on the path: point of local repair (PLR) and merge point (MP). PLR is the headend of the backup tunnel, and MP is the tailend of the backup tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 194: Is-Is Ip Fast Reroute Loop-Free Alternative

    Note MPLS FRR and IPFRR cannot be configured on the same interface at the same time. For information about configuring BFD, see Cisco IOS XR Interface and Hardware Configuration Guide for the Cisco CRS-1 Router. MPLS-TE and Fast Reroute over Link Bundles MPLS Traffic Engineering (TE) and Fast Reroute (FRR) are supported over bundle interfaces.

  • Page 195: Ignore Intermediate System-To-Intermediate System Overload Bit Setting In Mpls-Te

    This behavior is backward compatible in nature. For more information related to IS-IS overload avoidance related commands, see Cisco IOS XR MPLS Command Reference for the Cisco CRS Router.

  • Page 196: Dwdm Transponder Integration

    • Peer model • Border model Control plane separation • Interarea or AS-Verbatim • BGP4 or MPLS • Restoration–Dynamic path computation • Control channel manager • Link summary Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 197: Gmpls Protection And Restoration

    N working LSPs and spans. Shared mesh is defined as preplanned LSP rerouting, which reduces the restoration resource requirements by allowing multiple restoration LSPs to be initiated from distinct ingress nodes to share common resources, such as links and nodes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 198: End-To-End Recovery

    Assigning Color Names to Numeric Values, on page 268 Associating Affinity-Names with TE Links, on page 270 Associating Affinity Constraints for TE Tunnels, on page 271 Configure Flexible Name-based Tunnel Constraints: Example, on page 347 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 199: Mpls Traffic Engineering Interarea Tunneling

    Multiarea and Interarea TE are required when you run multiple IGP area backbones. The Multiarea and Interarea TE allows you to: • Limit the volume of flooded information. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 200: Loose Hop Expansion

    • When multiarea is deployed in a network that contains subareas, you must enable MPLS-TE in the subarea for TE to find a path when loose hop is specified. • You must specify the reachable explicit path for the interarea tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 201: Loose Hop Reoptimization

    TE tunnel interfaces are advertised in the IGP network just like any other links. Routers can then use these advertisements in their IGPs to compute the SPF even if they are not the head end of any TE tunnels. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 202: Mpls-Te Forwarding Adjacency Restrictions

    The exact renormalization algorithm used is platform-dependent. There are two ways to configure load balancing: Explicit configuration Using this method, load shares are explicitly configured on each tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 203: Path Computation Element

    PCEP sessions and to request and send paths for multi-domain TE LSPs. PCEP is used for communication between PCC and PCE (as well as between two PCEs) and employs IGP extensions to dynamically discover PCE. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 204: Policy-Based Tunnel Selection

    PBTS supports up to seven (exp 1 - 7) EXP values associated with a single TE tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 205: Policy-Based Tunnel Selection Functions

    Related Topics Configuring Policy-based Tunnel Selection, on page 286 Configure Policy-based Tunnel Selection: Example, on page 351 PBTS Restrictions When implementing PBTS, the following restrictions are listed: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 206: Path Protection

    • Enable MPLS. • Configure TE on the routers. • Configure a TE tunnel with a dynamic path option by using the path-option command with the dynamic keyword. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 207: Restrictions For Path Protection

    • An explicit path can be protected by a path option level that references the same explicit path name or identifier, because it is considered another path-option. • Enhanced path protection is not supported. Related Topics Configure Tunnels for Path Protection: Example, on page 352 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 208: Co-Existence Of Path Protection With Fast Reroute

    This table lists the automatic bandwidth functions. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 209 When more than 100 tunnels are auto-bw enabled, the algorithm will jitter the first application of every Note tunnel by a maximum of 20% (max 1hour). The algorithm does this to avoid too many tunnels running auto bandwidth applications at the same time. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 210: Adjustment Threshold

    Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 211: Restrictions For Mpls-Te Automatic Bandwidth

    P2MP tree when the end-points are added or removed in the TE source configuration (explicit user operation). These are the definitions for Point-to-Multipoint (P2MP) tunnels: Source Configures the node in which Label Switched Path (LSP) signaling is initiated. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 212 • Ability to configure explicit paths to enable optimized traffic distribution and prevention of single point of failures in the network. • Link protection of MPLS-labeled traffic traversing branch paths of the P2MP-TE tree. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 213: Point-To-Multipoint Rsvp-Te

    Configuring the Static Group for the Point-to-Multipoint Interface, on page 309 Configure Point-to-Multipoint for the Source: Example, on page 363 Configure the Point-to-Multipoint Solution: Example, on page 364 Point-to-Multipoint Fast Reroute, on page 196 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 214: Point-To-Multipoint Fast Reroute

    P2MP tunnels are signaled by using the dynamic and explicit path-options in an IGP intra area. InterArea cases for P2MP tunnels are signaled by the verbatim path option. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 215 • TE topology database is not needed. • If the topology changes, reoptimization is not required. Related Topics Configuring Destinations for the Tunnel Interface, on page 311 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 216: Mpls Traffic Engineering Shared Risk Link Groups

    Creating a Link Protection on Backup Tunnel with SRLG Constraint, on page 300 Creating a Node Protection on Backup Tunnel with SRLG Constraint, on page 303 Configure the MPLS-TE Shared Risk Link Groups: Example, on page 353 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 217: Explicit Path

    IP addresses to extract SRLG values that are to be excluded from the explicit path, thereby bypassing the failed link. These are referred to as next-hop (NHOP) backup tunnels because Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 218 They also protect LSPs by specifying the protected link IP addresses that are to be excluded from the explicit path, and the SRLG values associated with the IP addresses excluded from the explicit path. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 219: Importance Of Protection

    Configure the MPLS-TE Shared Risk Link Groups: Example, on page 353 Importance of Protection This section describes the following: • Delivery of Packets During a Failure • Multiple Backup Tunnels Protecting the Same Interface Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 220: Delivery Of Packets During A Failure

    SRLG Limitations There are few limitations to the configured SRLG feature: • The exclude-address and exclude-srlg options are not allowed in the IP explicit path strict-address network. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 221: Mpls Te Srlg Scale Enhancements

    • When the ingress router receives the path error (preemption pending) from the intermediate node, it immediately starts a re-optimization that avoids the link that caused the preemption. • When the re-optimization is complete, the ingress router tears down the soft-preempted LSP. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 222: Path Option Attributes

    0xCAFE/0xCAFE. All LSPs computed using any of these path-options use signalled-bandwidth as 1000, as this is the only value that is specified only at the tunnel level. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 223: Traffic Engineering Bandwidth And Bandwidth Pools

    • when a local interface fails on the primary LSP or a path error is received on the primary LSP Note Path option switchover between various path options with different bandwidth classes is not allowed. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 224: Path Option And Path Protection

    • the shared-media link used by the current LSP permits computation of a node-diverse path In Cisco IOS XR, reoptimization between different class types would actually be rejected by the next hop. This rejection will occur by an admission failure.

  • Page 225: Destination List (Prefix-List)

    (ECMP). The ECMP is used to load-share the flow(s) on multiple available paths towards the destination PE. The route added by autoroute destination inherits the same IGP Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 226: Mpls Te Extended Admin Groups

    PCE to have better visibility into network state, as well as improve the efficiency of computation requests, as these can rely on state present on the PCE. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 227: Stateful Pce State Reporting

    • The PCC revokes control of a tunnel from a PCE • The PCC deletes a tunnel • A signalling error occurs on a tunnel • Reportable information about a tunnel changes Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 228: Stateful Pce State Synchronization

    • Logging output messages include MPLS TE tunnel signaled name. • Logging of path change events and available bandwidth on the new for all auto-bandwidth operations. • Auto-bandwidth logging output includes signaled name. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 229: Mpls Te Ipv6 Autoroute

    At this stage, the headend routers automatically check if the path limit is crossed and reroute the LSPs away from the out-of-service link. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 230: Soft-Preemption Over Frr Backup Tunnels

    FRR backup tunnel is enabled, the traffic of the preempted LSP is moved onto the FRR backup, if it is available and ready. This way, the capacity of the backup tunnel is used to remove the potential congestion that might be caused by soft-preemption. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 231: Mpls Te Auto-Tunnel Mesh One-Hop

    • If you are going to use nondefault holdtime or intervals, you must decide the values to which they are set. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 232 Enables traffic engineering on a particular interface on the originating node and enters MPLS-TE interface configuration mode. Example: RP/0/RP0/CPU0:router(config-mpls-te)#interface POS0/6/0/0 RP/0/RP0/CPU0:router(config-mpls-te-if)# Step 4 exit Exits the current configuration mode. Example: RP/0/RP0/CPU0:router(config-mpls-te-if)# exit RP/0/RP0/CPU0:router(config-mpls-te)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 233 • Cancel—Remains in the configuration session, without committing the configuration changes. Step 11 show mpls traffic-eng topology (Optional) Verifies the traffic engineering topology. Example: RP/0/RP0/CPU0:router# show mpls traffic-eng Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 234: Creating An Mpls-Te Tunnel

    6. signalled- bandwidth {bandwidth [class-type ct ] | sub-pool bandwidth} 7. Use the commit or end command. 8. (Optional) show mpls traffic-eng tunnels 9. (Optional) show ipv4 interface brief 10. (Optional) show mpls traffic-eng link-management admission-control Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 235 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 236: Configuring Forwarding Over The Mpls-Te Tunnel

    ID to the routers, the system defaults to the global router ID. Default router IDs are subject to change, which can result in an unstable link. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 237 Enables messages that notify the neighbor nodes about the routes that are forwarding. Example: RP/0/RP0/CPU0:router(config-if)# autoroute announce Step 5 Exits the current configuration mode. exit Example: RP/0/RP0/CPU0:router(config-if)# exit Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 238: Protecting Mpls Tunnels With Fast Reroute

    Overview of MPLS Traffic Engineering, on page 166 Creating an MPLS-TE Tunnel, on page 216 Protecting MPLS Tunnels with Fast Reroute Perform this task to protect MPLS-TE tunnels, as created in the previous task. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 239 15. Use the commit or end command. 16. (Optional) show mpls traffic-eng tunnels backup 17. (Optional) show mpls traffic-eng tunnels protection frr 18. (Optional) show mpls traffic-eng fast-reroute database Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 240 Enables traffic engineering on a particular interface on the originating node. Example: RP/0/RP0/CPU0:router(config-mpls-te)# interface pos0/6/0/0 RP/0/RP0/CPU0:router(config-mpls-te-if)# Step 7 backup-path tunnel-te tunnel-number Sets the backup path to the backup tunnel. Example: RP/0/RP0/CPU0:router(config-mpls-te-if)# backup-path tunnel-te 2 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 241 Assigns a destination address on the new tunnel. • Destination address is the remote node’s MPLS-TE Example: router ID. RP/0/RP0/CPU0:router(config-if)# destination • Destination address is the merge point between 192.168.92.125 backup and protected tunnels. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 242 Fast Reroute, on page 175 Fast Reroute Node Protection, on page 183 Creating an MPLS-TE Tunnel, on page 216 Configuring Forwarding over the MPLS-TE Tunnel, on page 218 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 243: Enabling An Autotunnel Backup

    Example: tunnel. Range is 0 to 10080. RP/0/RP0/CPU0:router(config-mpls-te)# auto-tunnel backup timers removal unused Note You can also configure the auto-tunnel backup command at mpls traffic-eng interface mode. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 244: Removing An Autotunnel Backup

    To remove all the backup autotunnels, perform this task to remove the AutoTunnel Backup feature. SUMMARY STEPS 1. clear mpls traffic-eng auto-tunnel backup unused { all | tunnel-tenumber} 2. Use the commit or end command. 3. show mpls traffic-eng auto-tunnel summary Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 245: Establishing Mpls Backup Autotunnels To Protect Fast Reroutable Te Lsps

    Configure the MPLS-TE Auto-Tunnel Backup: Example, on page 356 Establishing MPLS Backup AutoTunnels to Protect Fast Reroutable TE LSPs To establish an MPLS backup autotunnel to protect fast reroutable TE LSPs, perform these steps: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 246 • Yes— Saves configuration changes and exits the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 247: Establishing Next-Hop Tunnels With Link Protection

    7. Use the commit or end command. 8. show mpls traffic-eng tunnels number detail DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 248 Step 8 show mpls traffic-eng tunnels number detail Displays information about configured NHOP tunnels and SRLG information. Example: RP/0/RP0/CPU0:router# show mpls traffic-eng tunnels 1 detail Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 249: Configuring A Prestandard Ds-Te Tunnel

    Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 rsvp interface type interface-path-id Enters RSVP configuration mode and selects an RSVP interface. Example: RP/0/RP0/CPU0:router(config)# rsvp interface Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 250 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 251: Configuring An Ietf Ds-Te Tunnel Using Rdm

    6. mpls traffic-eng 7. ds-te mode ietf 8. exit 9. interface tunnel-te tunnel-id 10. signalled-bandwidth {bandwidth [class-type ct] | sub-pool bandwidth} 11. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 252 Step 7 ds-te mode ietf Enables IETF DS-TE mode and default TE class map. IETF DS-TE mode is configured on all network nodes. Example: RP/0/RP0/CPU0:router(config-mpls-te)# ds-te mode ietf Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 253: Configuring An Ietf Ds-Te Tunnel Using Mam

    Configuring an IETF DS-TE Tunnel Using MAM Perform this task to configure an IETF mode differentiated services traffic engineering tunnel using the Maximum Allocation Model (MAM) bandwidth constraint model. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 254 {total reservable bandwidth | Sets the reserved RSVP bandwidth available on this max-reservable-bw maximum-reservable-bw} [bc0 interface. reservable bandwidth] [bc1 reservable bandwidth] Physical interface bandwidth is not used by Note MPLS-TE. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 255 Step 8 ds-te bc-model mam Enables the MAM bandwidth constraint model globally. Example: RP/0/RP0/CPU0:router(config-mpls-te)# ds-te bc-model mam Step 9 exit Exits the current configuration mode. Example: RP/0/RP0/CPU0:router(config-mpls-te)# exit Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 256: Configuring Mpls -Te And Fast-Reroute On Ospf

    Maximum Allocation Bandwidth Constraint Model, on page 173 Configuring MPLS -TE and Fast-Reroute on OSPF Perform this task to configure MPLS-TE and Fast Reroute (FRR) on OSPF. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 257 } } [isis instance name {level level} ] [ospf instance name {area area ID} ] ] [verbatim] [lockdown] Example: RP/0/RP0/CPU0:router(config-if)# path-option 1 explicit identifier 6 ospf green area 0 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 258: Configuring The Ignore Integrated Is-Is Overload Bit Setting In Mpls-Te

    SUMMARY STEPS 1. configure 2. mpls traffic-eng 3. path-selection ignore overload {head | mid | tail} 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 259: Configuring Gmpls

    Configure the Ignore IS-IS Overload Bit Setting in MPLS-TE: Example, on page 344 Configuring GMPLS To fully configure GMPLS, you must complete these high-level tasks in order: • Configuring IPCC Control Channel Information, on page 242 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 260: Configuring Ipcc Control Channel Information

    6. mpls traffic-eng router-id type interface-path-id 7. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 261 • Yes— Saves configuration changes and exits the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 262: Configuring Ospf Over Ipcc

    7. mpls traffic-eng router-id {type interface-path-id | ip-address } 8. area area-id 9. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 263 Configures the MPLS-TE area. Example: RP/0/RP0/CPU0:router(config-ospf)# area 0 RP/0/RP0/CPU0:router(config-ospf-ar)# Step 9 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 264: Configuring Local And Remote Te Links

    Configuring Remote TE Link Adjacency Information for Unnumbered Links, on page 257 Configuring Numbered and Unnumbered Links Perform this task to configure numbered and unnumbered links. Note Unnumbered TE links use the IP address of the associated interface. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 265 Step 4 Use the commit or end command. commit—Saves the configuration changes, and remains within the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 266: Configuring Local Reservable Bandwidth

    Sets the reserved RSVP bandwidth available on this interface. bandwidth] [global-pool bandwidth] [sub-pool Note MPLS-TE can use only the amount of bandwidth specified reservable-bw] using this command on the configured interface. Example: RP/0/RP0/CPU0:router(config-rsvp-if)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 267: Configuring Local Switching Capability Descriptors

    DETAILED STEPS Command or Action Purpose Step 1 Enters global configuration mode. configure Example: RP/0/RP0/CPU0:router# configure Step 2 mpls traffic-eng Enters MPLS-TE configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 268: Configuring Persistent Interface Index

    • Cancel—Remains in the configuration session, without committing the configuration changes. Configuring Persistent Interface Index Perform this task to preserve the LMP interface index across all interfaces on the router. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 269: Enabling Lmp Message Exchange

    LMP on a per neighbor basis using the lmp static command in LMP protocol neighbor mode. LMP is recommended unless the peer optical device does not support LMP (in which case it is necessary Note to disable it at both ends). Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 270 2.2.2.2 Step 6 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 271: Disabling Lmp Message Exchange

    DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 Enters MPLS-TE configuration mode. mpls traffic-eng Example: RP/0/RP0/CPU0:router(config)# mpls traffic-eng Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 272: Configuring Remote Te Link Adjacency Information For Numbered Links

    • Cancel—Remains in the configuration session, without committing the configuration changes. Configuring Remote TE Link Adjacency Information for Numbered Links Perform this task to configure remote TE link adjacency information for numbered links. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 273 Configures LMP neighbor remote TE links. Example: RP/0/RP0/CPU0:router(config-mpls-te-if)# lmp data-link adjacency Step 5 remote switching-capability {fsc | lsc | psc1} Configures the remote LMP MPLS-TE interface switching capability. Example: RP/0/RP0/CPU0:router(config-mpls-te-if-adj)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 274 • Cancel—Remains in the configuration session, without committing the configuration changes. Step 11 show mpls lmp Verifies the assigned value for the local interface identifiers. Example: RP/0/RP0/CPU0:router# show mpls lmp Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 275: Configuring Remote Te Link Adjacency Information For Unnumbered Links

    TE on a particular interface on the originating node. Example: RP/0/RP0/CPU0:router(config-mpls-te)# interface POS0/6/0/0 Step 4 Configures LMP neighbor remote TE links. lmp data link adjacency Example: RP/0/RP0/CPU0:router(config-mpls-te-if)# lmp data-link adjacency Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 276: Configuring Numbered And Unnumbered Optical Te Tunnels

    These subtasks are included: • Configuring an Optical TE Tunnel Using Dynamic Path Option, on page 259 • Configuring an Optical TE Tunnel Using Explicit Path Option, on page 261 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 277: Configuring An Optical Te Tunnel Using Dynamic Path Option

    8. path-option path-id dynamic 9. direction [bidirectional] 10. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 278 7, tunnels use the default TE class map (namely, class-type 1, priority 7). Example: RP/0/RP0/CPU0:router(config-if)# signalled-bandwidth 10 class-type 1 Step 7 destination ip-address Assigns a destination address on the new tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 279: Configuring An Optical Te Tunnel Using Explicit Path Option

    Perform this task to configure a numbered or unnumbered optical TE tunnel on a router. This task can be applied to both the headend and tailend router. Note You cannot configure dynamic tunnels on the tailend router. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 280 The tailend (passive) router does not signal the tunnel, it simply accepts Note Example: a connection from the headend router. The tailend router supports the same configuration as the headend router. RP/0/RP0/CPU0:router(config-if)# passive Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 281: Configuring Lsp Hierarchy

    To configure LSP hierarchy, you must perform a series of tasks that have been previously described in this GMPLS configuration section. The tasks, which must be completed in the order presented, are as follows: 1 Establish an optical TE tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 282: Configuring Border Control Model

    Configuring Path Protection These tasks describe how to configure path protection: • Configuring an LSP, on page 265 • Forcing Reversion of the LSP, on page 267 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 283: Configuring An Lsp

    Specifies a primary or secondary IPv4 address for an interface. unnumbered type interface-path-id • Network mask can be a four-part dotted decimal address. For example, 255.0.0.0 indicates that each bit equal to 1 means Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 284 Configures the bandwidth required for an MPLS TE tunnel. The sub-pool bandwidth} signalled-bandwidth command supports two bandwidth pools (class-types) for the Diff-Serv Aware TE (DS-TE) feature. Example: RP/0/RP0/CPU0:router(config-if)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 285: Forcing Reversion Of The Lsp

    Perform this task to allow a forced reversion of the LSPs, which is only applicable to 1:1 LSP protection. SUMMARY STEPS 1. mpls traffic-eng path-protection switchover {gmpls tunnel-name | tunnel-te tunnel-id } 2. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 286: Configuring Flexible Name-Based Tunnel Constraints

    The first task in enabling the new coloring scheme is to assign a numerical value (in hexadecimal) to each value (color). Note An affinity color name cannot exceed 64 characters. An affinity value cannot exceed a single digit. For example, magenta1. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 287 • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Flexible Name-based Tunnel Constraints, on page 180 Configure Flexible Name-based Tunnel Constraints: Example, on page 347 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 288: Associating Affinity-Names With Te Links

    Step 5 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 289: Associating Affinity Constraints For Te Tunnels

    2. interface tunnel-te tunnel-id 3. affinity {affinity-value mask mask-value | exclude name | exclude -all | include name | include-strict name} 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 290: Configuring Is-Is To Flood Mpls-Te Link Information

    Perform this task to configure a router running the Intermediate System-to-Intermediate System (IS-IS) protocol to flood MPLS-TE link information into multiple IS-IS levels. This procedure shows how to enable MPLS-TE in both IS-IS Level 1 and Level 2. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 291 IPv4 and IPv6 address prefixes. Example: RP/0/RP0/CPU0:router(config-isis)# address-family ipv4 unicast Step 5 metric-style wide Enters the new-style type, length, and value (TLV) objects. Example: RP/0/RP0/CPU0:router(config-isis-af)# metric-style wide Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 292: Configuring An Ospf Area Of Mpls-Te

    5. interface type interface-path-id 6. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 293: Configuring Explicit Paths With Abrs Configured As Loose Addresses

    Configuring Explicit Paths with ABRs Configured as Loose Addresses Perform this task to specify an IPv4 explicit path with ABRs configured as loose addresses. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 294 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 295: Configuring Mpls-Te Forwarding Adjacency

    • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration mode, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 296: Configuring Unequal Load Balancing

    Configures an MPLS-TE tunnel interface configuration mode and enables traffic engineering on a particular interface on the originating node. Example: Only tunnel-te interfaces are Note RP/0/RP0/CPU0:router(config)# interface permitted. tunnel-te 1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 297: Enabling Unequal Load Balancing

    SUMMARY STEPS 1. configure 2. mpls traffic-eng 3. load-share unequal 4. Use the commit or end command. 5. show mpls traffic-eng tunnels Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 298 Verifies the state of unequal load balancing, including bandwidth and load-share values. Example: RP/0/RP0/CPU0:router# show mpls traffic-eng tunnels Related Topics Unequal Load Balancing, on page 184 Configure Unequal Load Balancing: Example, on page 350 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 299: Configuring A Path Computation Client And Element

    Configures a TE tunnel as a PCC. Example: RP/0/RP0/CPU0:router(config-if)# path-option 1 dynamic pce Step 4 Use the commit or end command. commit—Saves the configuration changes, and remains within the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 300: Configuring A Path Computation Element Address

    DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 mpls traffic-eng Enters the MPLS-TE configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 301: Configuring Pce Parameters

    Configure PCE: Example, on page 351 Configuring PCE Parameters Perform this task to configure PCE parameters, including a static PCE peer, periodic reoptimization timer values, and request timeout values. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 302 Configures a static PCE peer address. PCE peers are also discovered dynamically through OSPF or ISIS. Example: RP/0/RP0/CPU0:router(config-mpls-te)# pce peer address ipv4 10.1.1.1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 303 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 304: Configuring Policy-Based Tunnel Selection

    4. signalled-bandwidth {bandwidth [class-type ct] | sub-pool bandwidth} 5. autoroute announce 6. destination ip-address 7. policy-class {1 - 7} | {default} 8. path-option preference-priority {explicit name explicit-path-name} 9. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 305 1 policy-classes. Once an EXP value is used in a policy-class configuration, it can only be reused if the subsequent policy-class Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 306: Configuring The Automatic Bandwidth

    Perform these tasks to configure the automatic bandwidth: Configuring the Collection Frequency Perform this task to configure the collection frequency. You can configure only one global collection frequency. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 307 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 308: Forcing The Current Application Period To Expire Immediately

    Range is from 0 to 65535. Step 2 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 309: Configuring The Automatic Bandwidth Functions

    Configures the minimum and maximum automatic bandwidth to set on a tunnel. Adjustment threshold Configures the adjustment threshold for each tunnel. Overflow detection Configures the overflow detection for each tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 310 RP/0/RP0/CPU0:router(config-if-tunte-autobw)# Frequency in minutes for the automatic bandwidth application 1000 application. Range is from 5 to 10080 (7 days). The default value is 1440 (24 hours). Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 311 The default value is none. Configures the bandwidth change value in kbps to trigger an overflow. Range is from 10 to 4294967295. The default value is 10. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 312: Configuring The Shared Risk Link Groups

    Perform this task to configure the SRLG value for each link that has a shared risk with another link. Note You can configure up to 30 SRLGs per interface. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 313 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 314: Creating An Explicit Path With Exclude Srlg

    1. configure 2. explicit-path {identifier number [disable | index]}{ name explicit-path-name} 3. index 1 exclude-address 192.168.92.1 4. index 2 exclude-srlg 192.168.92.2 5. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 315 Fast ReRoute with SRLG Constraints, on page 199 Importance of Protection, on page 201 Delivery of Packets During a Failure, on page 202 Multiple Backup Tunnels Protecting the Same Interface , on page 202 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 316: Using Explicit Path With Exclude Srlg

    Example: RP/0/RP0/CPU0:router(config)# mpls traffic-eng Step 3 interface type interface-path-id Enables traffic engineering on a specific interface on the originating node. Example: RP/0/RP0/CPU0:router(config-mpls-te)# interface POS 0/6/0/0 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 317 Exits the current configuration mode. exit Example: RP/0/RP0/CPU0:router(config-if)# exit Step 12 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 318: Creating A Link Protection On Backup Tunnel With Srlg Constraint

    Creating a Link Protection on Backup Tunnel with SRLG Constraint Perform this task to create an explicit path with the exclude SRLG option on the static backup tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 319 Sets the backup path to the primary tunnel outgoing interface. Example: RP/0/RP0/CPU0:router(config-mpls-te)# backup-path tunnel-te 2 Step 5 exit Exits the current configuration mode. Example: RP/0/RP0/CPU0:router(config-mpls-te-if)# exit Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 320 Step 13 index 1 exclude-srlg 192.168.92.2 Specifies the protected link IP address to get SRLGs to be excluded from the explicit path. Example: RP/0/RP0/CPU0:router:router(config-if)# index 1 exclude-srlg 192.168.192.2 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 321: Creating A Node Protection On Backup Tunnel With Srlg Constraint

    Configure the MPLS-TE Shared Risk Link Groups: Example, on page 353 Creating a Node Protection on Backup Tunnel with SRLG Constraint Perform this task to configure node protection on backup tunnel with SRLG constraint. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 322 Example: RP/0/RP0/CPU0:router(config-mpls-te)# interface POS 0/6/0/0 Step 4 backup-path tunnel-te tunnel-number Sets the backup path for the primary tunnel outgoing interface. Example: RP/0/RP0/CPU0:router(config-mpls-te)# backup-path tunnel-te 2 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 323 Step 12 explicit-path {identifier number [disable | index]}{ Enters the explicit path configuration mode. Identifer range name explicit-path-name} is 1 to 65535. Example: RP/0/RP0/CPU0:router(config)# explicit-path name backup-srlg-nodep Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 324 Multiple Backup Tunnels Protecting the Same Interface , on page 202 SRLG Limitations, on page 202 MPLS TE SRLG Scale Enhancements, on page 203 Configure the MPLS-TE Shared Risk Link Groups: Example, on page 353 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 325: Configuring Point-To-Multipoint Te

    DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 Enters multicast routing configuration mode. multicast-routing Example: RP/0/RP0/CPU0:router(config)# multicast-routing RP/0/RP0/CPU0:router(config-mcast)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 326 Step 9 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 327: Configuring The Static Group For The Point-To-Multipoint Interface

    1. configure 2. router mld 3. vrf vrf-name 4. interface tunnel-mte tunnel-id 5. static-group group-address 6. Use the commit or end command. 7. show mrib ipv6 route source-address Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 328 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 329: Configuring Destinations For The Tunnel Interface

    • Multicast routing must be enabled on both the tunnel-mte interface and customer-facing interface from the source. • Static-group must be configured on the tunnel-mte interface to forward specified multicast traffic over P2MP LSP. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 330 RP/0/RP0/CPU0:router(config-if)# destination fall back path option is dynamic. 172.16.255.1 RP/0/RP0/CPU0:router(config-if-p2mp-dest)# Step 4 path-option preference-priority explicit identifier Configures the path number of the IP explicit path. path-number Example: RP/0/RP0/CPU0:router(config-if-p2mp-dest)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 331 Exits the current configuration mode. Example: RP/0/RP0/CPU0:router(config-if-p2mp-dest)# exit RP/0/RP0/CPU0:router(config-if)# Step 11 destination ip-address Specifies that destination 172.16.255.3 uses only the dynamically computed path. Example: RP/0/RP0/CPU0:router(config-if)# destination 172.16.255.3 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 332: Disabling Destinations

    Configuring the Static Group for the Point-to-Multipoint Interface, on page 309 Disabling Destinations Perform this task to disable the given destination for the Point-to-Multipoint (P2MP) tunnel interface. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 333 Step 4 destination ip-address Sets the destination address for tunnel-mte 10 to 140.140.140.140. Example: RP/0/RP0/CPU0:router(config-if)# destination 140.140.140.140 RP/0/RP0/CPU0:router(config-if-p2mp-dest)# Step 5 disable Disables destination 140.140.140.140 for tunnel-mte Example: RP/0/RP0/CPU0:router(config-if-p2mp-dest)#disable Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 334: Logging Per Destinations For Point-To-Multipoint

    Point-to-Multipoint Traffic-Engineering Overview, on page 193 Disable a Destination: Example, on page 364 Logging Per Destinations for Point-to-Multipoint Perform this task to log destinations for Point-to-Multipoint (P2MP). Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 335 0. Example: RP/0/RP0/CPU0:router(config-if)# ipv4 unnumbered loopback0 Step 4 destination ip-address Sets the destination address for tunnel-mte from 1000 to 100.0.0.3. Example: RP/0/RP0/CPU0:router(config-if)# destination 100.0.0.3 RP/0/RP0/CPU0:router(config-if-p2mp-dest)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 336 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 337: Enabling Soft-Preemption On A Node

    Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 mpls traffic-eng Enters MPLS-TE configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls traffic-eng Step 3 Enables soft-preemption on a node. soft-preemption Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 338: Enabling Soft-Preemption On A Tunnel

    Perform this task to enable the soft-preemption feature on a MPLS TE tunnel. By default, this feature is disabled. It has to be explicitly enabled. SUMMARY STEPS 1. configure 2. interface tunnel-te tunnel-id 3. soft-preemption 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 339 • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Soft-Preemption, on page 203 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 340: Configuring Attributes Within A Path-Option Attribute

    You can configure the class type of the tunnel Note Example: bandwidth request. The class-type 0 is strictly RP/0/RP0/CPU0:router(config-te-attribute-set)# equivalent to global-pool and class-type 1 is strictly signalled-bandwidth 1000 class-type 0 equivalent to subpool. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 341: Configuring Auto-Tunnel Mesh Tunnel Id

    Perform this activity to configure the tunnel ID range that can be allocated to Auto-tunnel mesh tunnels. SUMMARY STEPS 1. configure 2. mpls traffic-eng 3. auto-tunnel mesh 4. tunnel-id min value max value 5. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 342: Configuring Auto-Tunnel Mesh Unused Timeout

    Auto-Tunnel Mesh, on page 206 Destination List (Prefix-List), on page 207 Configuring Auto-tunnel Mesh Unused Timeout Perform this task to configure a global timer to remove unused auto-mesh tunnels. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 343 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 344: Configuring Auto-Tunnel Mesh Group

    RP/0/RP0/CPU0:router# configure Step 2 mpls traffic-eng Enters MPLS-TE configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls traffic-eng Step 3 auto-tunnel mesh Enables auto-tunnel mesh groups globally. Example: RP/0/RP0/CPU0:router(config-mpls-te)# auto-tunnel mesh Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 345: Configuring Tunnel Attribute-Set Templates

    Related Topics Auto-Tunnel Mesh, on page 206 Destination List (Prefix-List), on page 207 Configuring Tunnel Attribute-Set Templates Perform this task to define attribute-set templates for auto-mesh tunnels. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 346 You can configure the class type of the tunnel Note signalled-bandwidth 1000 class-type 0 bandwidth request. The class-type 0 is strictly equivalent to global-pool and class-type 1 is strictly equivalent to subpool. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 347 • Cancel—Remains in the configuration session, without committing the configuration changes. Related Topics Auto-Tunnel Mesh, on page 206 Destination List (Prefix-List), on page 207 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 348: Enabling Ldp On Auto-Tunnel Mesh

    • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 349: Enabling Stateful Pce Client

    Enters MPLS TE configuration mode. mpls traffic-eng Example: RP/0/RP0/CPU0:router(config)#mpls traffic-eng Step 3 Enters PCE configuration mode. Example: RP/0/RP0/CPU0:router(config-mpls-te)#pce Step 4 stateful-client Enters stateful PCE client configuration mode. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 350: Configuring Vrf Redirection

    Configuring VRF Redirection Perform these steps to configure VRF redirection by installing multiple routes in the routing information base (RIB) per MPLS TE tunnel: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 351 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 352: Configuring Ipv6 Routing Over Ipv4 Mpls-Te Tunnels

    Command or Action Purpose Step 1 Enters global configuration mode. configure Example: RP/0/RP0/CPU0:router# configure Step 2 interface tunnel-te tunnel-id Configures an MPLS-TE tunnel interface. Example: RP/0/RP0/CPU0:router# interface tunnel-te 1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 353 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 354: Configuring Path-Selection Cost Limit

    Perform these steps to configure path-selection cost limit globally for MPLS TE tunnels: SUMMARY STEPS 1. configure 2. mpls traffic-eng 3. path-selection cost-limit cost-limit 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 355: Configuring Path-Selection Cost Limit Per Te Tunnel

    Perform these steps to configure path-selection cost limit per MPLS TE tunnel: SUMMARY STEPS 1. configure 2. interface tunnel-te tunnel-id 3. path-selection cost-limit cost-limit 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 356: Configuring Path-Selection Cost Limit Per Path-Option Attribute-Set

    Configuring Path-selection Cost Limit per Path-option Attribute-set Perform these steps to configure path-selection cost limit per path-option attribute-set: SUMMARY STEPS 1. configure 2. mpls traffic-eng 3. attribute-set path-option attribute-set-name 4. path-selection cost-limit 3 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 357: Enabling Soft-Preemption Over Frr Backup Tunnels

    • Soft-preemption enabled. • Fast-reroute (FRR) backup tunnel is activated. SUMMARY STEPS 1. configure 2. mpls traffic-eng 3. soft-preemption frr-rewrite 4. Use the commit or end command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 358: Enabling Auto-Onehop Tunnels To Next-Hop Neighbors

    A router that becomes a next hop neighbor will have a set of one-hop tunnels created automatically. Before You Begin The ipv4 unnumbered mpls traffic-eng Loopback Number configuration must be applied at the global configuration level. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 359 The range of tunnel ID is from 0 to 65535. Example: RP/0/0/CPU0:ios(config-te-auto-mesh)# tunnel-id min 4000 max 6000 Step 6 group group-id Enters the auto-tunnel mesh group configuration submode and creates a group ID. Example: RP/0/RP0/CPU0:router(config-te-auto-mesh)#group Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 360: Configuration Examples For Cisco Mpls-Te

    Build MPLS-TE Topology and Tunnels: Example The following examples show how to build an OSPF and IS-IS topology: (OSPF) configure mpls traffic-eng interface pos 0/6/0/0 router id loopback 0 router ospf 1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 361 192.168.92.125 commit show mpls traffic-eng tunnels backup show mpls traffic-eng fast-reroute database rsvp interface pos 0/6/0/0 bandwidth 100 150 sub-pool 50 interface tunnel-te1 bandwidth sub-pool 10 commit Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 362: Configure Ietf Ds-Te Tunnels: Example

    Configuring MPLS -TE and Fast-Reroute on OSPF, on page 238 Configure the Ignore IS-IS Overload Bit Setting in MPLS-TE: Example This example shows how to configure the IS-IS overload bit setting in MPLS-TE: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 363: Configure Gmpls: Example

    This example shows how to set up headend and tailend routers with bidirectional optical unnumbered tunnels using numbered TE links: Headend Router router ospf roswell router-id 11.11.11.11 nsf cisco area 23 area 51 interface Loopback 0 interface MgmtEth0/0/CPU0/1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 364 51 interface Loopback 0 interface MgmtEth0/0/CPU0/1 interface POS0/4/0/2 mpls traffic-eng router-id Loopback 0 mpls traffic-eng area 51 mpls traffic-eng interface POS0/2/0/3 flooding-igp ospf roswell area 51 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 365: Configure Flexible Name-Based Tunnel Constraints: Example

    1 dynamic router isis 1 is-type level-1 net 47.0001.0000.0000.0001.00 nsf cisco address-family ipv4 unicast metric-style wide mpls traffic-eng level-1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 366 Assigning Color Names to Numeric Values, on page 268 Associating Affinity-Names with TE Links, on page 270 Associating Affinity Constraints for TE Tunnels, on page 271 Flexible Name-based Tunnel Constraints, on page 180 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 367: Configure An Interarea Tunnel: Example

    68 with a holdtime value of 60: configure interface tunnel-te 68 forwarding-adjacency holdtime 60 commit Related Topics Configuring MPLS-TE Forwarding Adjacency, on page 277 MPLS-TE Forwarding Adjacency Benefits, on page 183 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 368: Configure Unequal Load Balancing: Example

    Loopback0 signalled-bandwidth 10 load-share 20 mpls traffic-eng load-share unequal Related Topics Setting Unequal Load Balancing Parameters, on page 278 Enabling Unequal Load Balancing, on page 279 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 369: Configure Pce: Example

    Configuring PCE Parameters, on page 283 Path Computation Element, on page 185 Configure Policy-based Tunnel Selection: Example The following configuration example illustrates a PBTS configuration: configure interface tunnel-te0 ipv4 unnumbered Loopback3 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 370: Configure Tunnels For Path Protection: Example

    Loopback150 autoroute announce destination 151.151.151.151 affinity 11 mask 11 path-protection path-option 2 explicit name p2mp3-p2mp4-p2mp5_1 protected-by 10 path-option 10 explicit Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 371: Configure Tunnels For Co-Existence Of Path Protection With Fast Reroute: Example

    POS0/4/0/1 value 10 The following example shows the SRLG values configured on a specific link. RP/0/RP0/CPU0:router# show mpls traffic-eng topology brief My_System_id: 100.0.0.2 (OSPF 0 area 0) Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 372 IS-IS ISIS-instance-123 level-2 1500 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2 10000000 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2 4294967290 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2 4294967295 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 373 Delivery of Packets During a Failure, on page 202 Multiple Backup Tunnels Protecting the Same Interface , on page 202 SRLG Limitations, on page 202 MPLS TE SRLG Scale Enhancements, on page 203 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 374: Configure The Mpls-Te Auto-Tunnel Backup: Example

    Uptime: 00:00:08 Prior LSP: ID: path option 1 [545] Removal Trigger: configuration changed Path info (OSPF 0 area 0): Hop0: 10.0.0.2 Hop1: 100.0.0.2 Hop2: 100.0.0.3 Hop3: 200.0.0.3 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 375 Hop2: 100.0.0.3 Hop3: 200.0.0.3 This example shows the automatically created backup tunnels. RP/0/RP0/CPU0:router# show mpls traffic-eng tunnels brief TUNNEL NAME DESTINATION STATUS STATE tunnel-te0 200.0.0.3 tunnel-te1 200.0.0.3 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 376 Instance: 2, Signaling Area: OSPF 100 area 1.2.3.4 Uptime: 00:00:34 (since Thu Aug 16 18:31:35 EST 2012) Outgoing Interface: GigabitEthernet0/1/0/2, Outgoing Label: 16000 Router-IDs: local 4.4.4.4 downstream 2.2.2.2 Soft Preemption: None Path Info: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 377 : yellow Exclude bit map : 0x2 Exclude name : red Priority: 2 2 Interface Bandwidth: 0 kbps (Default) AutoRoute Announce: Disabled Auto-bw: Disabled Soft Preemption: Disabled Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 378 Attribute-set: Not configured Auto-tunnel backup recreate time remaining: timer not running No backup tunnel found Interface: Gi0/2/0/3 tunnel-te340 PROTECTED : out i/f: PO0/3/0/2 Admin: Oper: Interface: PO0/3/0/1 (auto-tunnel backup) Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 379 Exclude bit map : 0x2 Exclude name : red Metric Type: TE (default) Hop-limit: disabled AutoRoute: disabled LockDown: disabled Policy class: not set Forwarding-Adjacency: disabled Loadshare: 0 equal loadshares Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 380: Configure Point-To-Multipoint Te: Examples

    Establishing Next-Hop Tunnels with Link Protection, on page 229 Backup AutoTunnels, on page 168 Configure Point-to-Multipoint TE: Examples These configuration examples show how to configure Point-to-Multipoint TE: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 381: Configure Point-To-Multipoint For The Source: Example

    The multicast group address, which is in Source-Specific Multicast (SSM) address range (ff35::/16), must Note be used on the static-group configuration because Cisco IOS XR software supports only SSM for Label Switch Multicast (LSM). Additionally, the customer-facing interface must have an IPv6 address.

  • Page 382: Disable A Destination: Example

    • Tunnel contains multiple destinations. For example, the P2MP-TE tunnel is configured with two leaf node destinations by using the dynamic and explicit path options. • Fast-Reroute (FRR) is specified on the P2MP tunnel. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 383 1 explicit name g2-r2-r4 signalled-bandwidth 1000 interface MgmtEth0/RP0/CPU0/0 ipv4 address 172.20.163.12 255.255.255.128 interface MgmtEth0/RP1/CPU0/0 shutdown interface GigabitEthernet0/0/0/0 ipv4 address 172.2.1.2 255.255.255.0 load-interval 30 interface GigabitEthernet0/0/0/1 ipv4 address 10.1.15.2 255.255.255.0 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 384 192.168.70.1 mpls oam rsvp interface GigabitEthernet0/0/0/0 bandwidth 20000 interface GigabitEthernet0/0/0/1 bandwidth 20000 interface GigabitEthernet0/0/0/2 bandwidth 20000 interface GigabitEthernet0/0/0/1.2 bandwidth 20000 interface GigabitEthernet0/0/0/2.2 bandwidth 20000 mpls traffic-eng Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 385 Configuring Destinations for the Tunnel Interface, on page 311 Path Option for Point-to-Multipoint RSVP-TE, on page 196 Logging Per Destinations for Point-to-Multipoint , on page 316 Point-to-Multipoint Traffic-Engineering Overview, on page 193 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 386: Configure Mpls Te Path-Selection Cost Limit: Example

    To locate and download MIBs using Cisco IOS XR software, use the Cisco MIB Locator found at the following URL and choose a platform under the Cisco Access Products menu: http://cisco.com/public/ sw-center/netmgmt/cmtk/mibs.shtml Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 387 Registered Cisco.com users can log in from this page to access even more content. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 388 Implementing MPLS Traffic Engineering Additional References Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 389: Implementing Gmpls Uni

    • Configuration Examples for GMPLS UNI, page 390 • Additional References, page 392 Prerequisites for Implementing GMPLS UNI The following prerequisites are required to implement GMPLS UNI: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 390: Restrictions For Implementing Gmpls Uni

    The LSP diversity is signalled on a GMPLS UNI tunnel with a path-option. A path-option is permitted on a GMPLS UNI tunnel with a "no ERO" and an optional "XRO" attribute sets to specify LSP diversity Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 391: Path Message Without An Ero

    A maximum of 20 connection diversity exclusions per XRO is supported. GMPLS RSVP VRF Signaling The Cisco IOS XR software supports a single non-default VRF for the GMPLS RSVP signaling. This allows GMPLS signaling to work even when the only available communication between the UNI-C and UNI-N...

  • Page 392: Dwdm Transponder Integration

    To implement TE configuration for GMPLS UNI, follow these procedures: Enabling GMPLS UNI Submode Perform this task to enable GMPLS UNI configuration submode and to configure GMPLS UNI tunnels. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 393 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 394: Configuring Gmpls Uni Controller

    Enters GMPLS UNI configuration submode. Example: RP/0/RP0/CPU0:router(config-mpls-te)# gmpls optical-uni Step 4 controller dwdm interface Enters GMPLS UNI controller submode. Example: RP/0/RP0/CPU0:router(config-te-gmpls)# controller dwdm 0/1/0/1 RP/0/RP0/CPU0:router(config-te-gmpls-cntl)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 395: Configuring Gmpls Uni Controller As A Tunnel Head

    8. path-option 10 no-ero lockdown 9. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 396 10 no-ero lockdown Step 9 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. end—Prompts user to take one of these actions: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 397: Configuring Other Tunnel Properties For A Gmpls Uni Tunnel

    DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 Enters MPLS-TE configuration mode. mpls traffic-eng Example: RP/0/RP0/CPU0:router(config)# mpls traffic-eng Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 398 • Yes— Saves configuration changes and exits the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 399: Configuring Lsp Diversity

    DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 mpls traffic-eng Enters MPLS-TE configuration mode. Example: RP/0/RP0/CPU0:router(config)# mpls traffic-eng Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 400: Configuring Connection Diversity

    • Cancel—Remains in the configuration session, without committing the configuration changes. Configuring Connection Diversity Perform this task to specify exclusions for an attribute set for LSP diversity, under MPLS-TE attribute-set configuration mode. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 401 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 402: Configuring Lmp For Gmpls Uni

    Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Step 2 Enters LMP configuration mode. Example: RP/0/RP0/CPU0:router(config)# lmp Step 3 gmpls optical-uni Enters GMPLS UNI configuration submode. Example: RP/0/RP0/CPU0:router(config-lmp)# gmpls optical-uni Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 403: Configuring An Lmp Neighbor

    6. router-id ipv4 unicast address 7. Use the commit or end command. DETAILED STEPS Command or Action Purpose Step 1 configure Enters global configuration mode. Example: RP/0/RP0/CPU0:router# configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 404 • Yes— Saves configuration changes and exits the configuration session. • No—Exits the configuration session without committing the configuration changes. • Cancel—Remains in the configuration session, without committing the configuration changes. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 405: Configuring An Lmp Controller

    Specifies a controller for GMPLS UNI. Example: RP/0/RP0/CPU0:router(config-lmp-gmpls-uni)# controller dwdm 0/4/0/0 Step 5 neighbor name Specifies an LMP neighbor for GMPLS and enters LMP GMPLS UNI neighbor configuration submode. Example: RP/0/RP0/CPU0:router(config-lmp-gmpls-uni-cntl)# Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 406: Configuring Rsvp Optical Refresh Interval And Missed Count

    Perform this task to configure optical refresh interval under the RSVP controller submode and to configure the number of missed refresh messages allowed before optical tunnel states are deleted. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 407 The accepted range is 1 to 48. The default value RP/0/RP0/CPU0:router(config-rsvp-cntl)# is 12. signalling refresh out-of-band missed Step 6 Use the commit or end command. commit—Saves the configuration changes and remains within the configuration session. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 408: Configuration Examples For Gmpls Uni

    100.12.12.12 controller dwdm 0/1/0/1 neighbor nbr_A link-id ipv4 unicast 192.168.100.1 neighbor link-id ipv4 unicast 192.168.100.2 neighbor interface-id unnumbered 13 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 409: Configuring Tail Uni-C For A Gmpls Tunnel: Example

    88.0.0.8 lsp-id 2 gmpls optical-uni controller dwdm 0/1/0/0 tunnel-properties logging events lsp-status state tunnel-id 1 destination ipv4 unicast 10.0.0.2 path-option 10 no-ero xro-attribute-set exclude-tun2 controller dwdm 0/1/0/1 tunnel-properties Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 410: Additional References

    Configuring AAA Services module in Cisco IOS XR System Security Configuration Guide for the Cisco CRS Router Standards Standard Title OIF UNI 1.0 User Network Interface (UNI) 1.0 Signaling Specification Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 411 Registered Cisco.com users can log in from this page to access even more content. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 412 Implementing GMPLS UNI Additional References Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 413: Implementing Mpls Oam

    MPLS Operations, Administration, and Maintenance (OAM) solution. For detailed information about MPLS commands and examples, see Cisco IOS XR MPLS Command Reference for the Cisco CRS Router.

  • Page 414: Mpls Network Management With Mpls Lsp Ping And Mpls Lsp Traceroute

    • A P2MP tunnel consists of one or more sub-LSPs.All sub-LSPs belonging to the same P2MP tunnel employ the same constraints, protection policies, and so on, which are configured at the headend router. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 415: P2Mp Ping

    MPLS LSP ping uses MPLS echo request and reply packets to validate an LSP. You can use MPLS LSP ping to validate RSVP P2MP IPv4 FECs by using appropriate keywords and arguments with the ping mpls command. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 416: P2Mp Traceroute

    For more information about ping and traceroute commands, see MPLS OAM commands chapter in the Cisco IOS XR MPLS Command Reference for the Cisco CRS Router. Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...

  • Page 417: Mpls Oam Support For Bgp 3107

    'X' - unknown return code, 'x' - return code 0, 'd' - DDMAP Type escape sequence to abort. Request #1 ! reply addr 192.168.222.2 ! reply addr 192.168.140.2 ! reply addr 192.168.170.1 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 418 Periodic FRR Promotion: every 300 seconds, next in 70 seconds Auto-bw enabled tunnels: 0 (disabled) Name: tunnel-mte10 Status: Admin: up Oper: up (Up for 12w4d) Config Parameters: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 419 RP/0/RP0/CPU0:router# ping mpls traffic-eng tunnel-mte 10 lsp id 10002 Mon Apr 12 12:14:04.532 EST Sending 1, 100-byte MPLS Echos to tunnel-mte10, timeout is 2.2 seconds, send interval is 0 msec, jitter value is 200 msec: Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 420 [L] DDMAP 1: 192.168.170.1 192.168.170.1 MRU 1500 [Labels: 16000 Exp: 0] ! 2 192.168.140.2 213 ms [Estimated Role: Egress] ! 2 192.168.170.1 254 ms [Estimated Role: Egress] ! 3 192.168.222.2 108 ms [Estimated Role: Bud] Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 421 [L] DDMAP 1: 192.168.170.1 192.168.170.1 MRU 1500 [Labels: 16000 Exp: 0] d 2 192.168.222.2 188 ms [Estimated Role: Branch] [L] DDMAP 0: 192.168.140.2 192.168.140.2 MRU 1500 [Labels: 16001 Exp: 0] Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 422 [L] DDMAP 0: 192.168.140.2 192.168.140.2 MRU 1500 [Labels: 16001 Exp: 0] [L] DDMAP 1: 192.168.170.1 192.168.170.1 MRU 1500 [Labels: 16000 Exp: 0] ! 4 192.168.170.1 327 ms [Estimated Role: Egress] Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x...
  • Page 423 Configure Policy-based Tunnel Selection how to configure Example command overview Configure the Ignore IS-IS Overload Bit Setting in MPLS-TE Build MPLS-TE Topology and Tunnels Example command Example command Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-1...
  • Page 424 Russian Doll Model (RDM) and Maximum Allocation Model flooding triggers (MAM) for active targeted hellos Differentiated Services Traffic-Engineering 123, 172 for passive targeted hellos bandwidth, how to configure forced reversion procedure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-2...
  • Page 425 LDP how to configure 8, 27, 34, 39, 123, 240, 241, 242, 244, 264, 286 how to configure tunnel bandwidth, engineering prerequisites Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-3...
  • Page 426 LDP Discovery for Targeted Hellos, example with LDP LDP discovery prerequisites 27, 29, 32 LSPs, setting up for active targeted hellos for passive targeted hellos over a link LDP Discovery, example Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-4...
  • Page 427 NSF (Nonstop Forwarding) 114, 125 persistent interface index, how to configure graceful restart, how to enable phases high-availability Point-to-Multipoint Traffic-Engineering with RSVP NSF services Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-5...
  • Page 428 LDP fault handling graceful restart head node hello messages high availability tail node how to configure Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-6...
  • Page 429 LDP 5, 7 creating with MPLS TE prerequisites with O-UNI LSP, configuring with RSVP 114, 166 Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-7...
  • Page 430 Index Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x IN-8...

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