Cisco NCS 540 Series Configuration Manual
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Cisco NCS 540 Series Configuration Manual

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L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR
Release 6.3.x
First Published: 2018-03-30
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 527-0883

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  • Page 1 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x First Published: 2018-03-30 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883...
  • Page 2 Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental. Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com trademarks.
  • Page 3 For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What's New in Cisco Product Documentation. To receive new and revised Cisco technical content directly to your desktop, you can subscribe to the . RSS feeds are a free service. © 2018 Cisco Systems, Inc. All rights reserved.

  • Page 5: Table Of Contents

    Define VRFs on PE Routers to Enable Customer Connectivity Configure VRF Interfaces on PE Routers for Each VPN Customer Configure Routing Protocol Between the PE and CE Routers L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 6 BGP Distribution of VPN Routing Information MPLS Forwarding Automatic Route Distinguisher Assignment C H A P T E R 2 Implementing IPv6 VPN Provider Edge Transport over MPLS L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 7 Deploying IPv6 over MPLS Backbones IPv6 on the Provider Edge and Customer Edge Routers OSPFv3 6VPE Configuring 6PE/VPE Configuring OSPFv3 as the Routing Protocol Between the PE and CE Routers L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 8 Contents L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x viii...

  • Page 9: Changes To This Document

    What's New in Cisco Product Documentation. To receive new and revised Cisco technical content directly to your desktop, you can subscribe to the . RSS feeds are a free service. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 10 Preface Obtaining Documentation and Submitting a Service Request L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 11: Mpls L3Vpn Overview

    VPN, only the edge router of the service provider that provides services to the customer site needs to be updated. The following figure depicts a basic MPLS VPN topology. Figure 1: Basic MPLS VPN Topology These are the basic components of MPLS VPN: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 12: How Mpls L3Vpn Works

    VPNs. However, a site can associate with only one VRF. A customer-site VRF contains all the routes available to the site from the VPNs of which it is a member. Read more at Major Components of MPLS L3VPN—Details, on page L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 13: Restrictions For Mpls L3Vpn

    Restrictions for MPLS L3VPN Restrictions for MPLS L3VPN Implementing MPLS L3VPN in Cisco NCS 540 Series Routers is subjected to these restrictions: • The Cisco NCS 540 Series router supports only 16 ECMP paths. • Fragmentation of MPLS packets that exceed egress MTU is not supported. Fragmentation is not supported for IP->MPLS imposition as well.

  • Page 14: Inter-As And Asbrs

    The peers in the different autonomous systems communicate over eBGP sessions; however, they can exchange route information as if they were iBGP peers. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 15: Confederations

    • The distributing router changes the next-hop addresses and labels and uses a next-hop-self address. • IGP-1 and IGP-2 know the addresses of CEBGP-1 and CEBGP-2. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 16: Mpls Vpn Inter-As Bgp Label Distribution

    VPN-IPv4 routes and forward them to the PE routers results in improved scalability compared with configurations in which the ASBR holds all the VPN-IPv4 routes and forwards the routes based on VPN-IPv4 labels. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 17: Exchanging Ipv4 Routes With Mpls Labels

    VPN-IPv4 routes and forward them through the PE routers and ASBRs allows for a scalable configuration. Figure 3: VPNs Using eBGP and iBGP to Distribute Routes and MPLS Labels L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 18: How To Implement Mpls Layer 3 Vpns

    • Keepalive messages—Routers exchange keepalive messages to determine if a neighboring router is still available to exchange routing information. The router sends these messages at regular intervals. (Sixty seconds is the default for Cisco routers.) The keepalive message does not contain routing data; it contains only a message header.

  • Page 19: Prerequisites For Implementing Mpls L3Vpn

    MPLS VPN customers. The tasks listed below helps to identify the core network topology. • Identify the size of the network: Identify the following to determine the number of routers and ports required: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 20: Configure Routing Protocols In The Core

    Router-PE1# show ospf neighbor Neighbors for OSPF dc-core Neighbor ID State Dead Time Address Interface 16.16.16.1 FULL/DR 00:00:34 191.22.1.2 HundredGigE0/0/1/0 Neighbor is up for 1d18h Total neighbor count: 1 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 21: Configure Mpls In The Core

    • How to Implement MPLS Layer 3 VPNs, on page 8 For more details on configuring the routing protocol, see Routing Configuration Guide for Cisco NCS 540 Series Routers and BGP Configuration Guide for Cisco NCS 540 Series Routers. Configure MPLS in the Core To enable MPLS on all routers in the core, you must configure a Label Distribution Protocol (LDP).

  • Page 22: Determine If Fib Is Enabled In The Core

    Forwarding Information Base (FIB) must be enabled on all routers in the core, including the provider edge (PE) routers. For information on how to determine if FIB is enabled, see the Implementing Cisco Express Forwarding module in the IP Addresses and Services Configuration Guide for Cisco NCS 540 Series Routers.
  • Page 23 Precedence: internet Non-stop routing is enabled Multi-protocol capability received Neighbor capabilities: Route refresh: advertised (old + new) and received (old + new) Graceful Restart (GR Awareness): received L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 24 Last ack version 798487, Last synced ack version 0 Outstanding version objects: current 0, max 1 Additional-paths operation: Send and Receive Send Multicast Attributes Advertise VPNv4 routes enabled with defaultReoriginate,disable Local with stitching-RT option L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 25: Connect Mpls Vpn Customers

    Configure the Core Network, on page 9 • Define VRFs on PE Routers to Enable Customer Connectivity, on page 16 For more details on Multiprotocol BGP, see BGP Configuration Guide for Cisco NCS 540 Series Routers. Associated Commands Connect MPLS VPN Customers Connecting MPLS VPN customers involves these main tasks: •...

  • Page 26: Define Vrfs On Pe Routers To Enable Customer Connectivity

    This VRF instance is then associated with the respective BGP instance. Running Configuration vrf vrf1601 address-family ipv4 unicast import route-target 2001:1601 export route-target 2001:1601 Verification Verify the import and export route targets. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 27: Configure Vrf Interfaces On Pe Routers For Each Vpn Customer

    HundredGigE0/0/1/0.1601 is Up, ipv4 protocol is Up Vrf is vrf1601 (vrfid 0x60000001) Internet address is 192.13.26.6/30 MTU is 1518 (1500 is available to IP) Helper address is not set L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 28: Configure Routing Protocol Between The Pe And Ce Routers

    Router-PE1(config-bgp)#vrf vrf1601 Router-PE1(config-bgp-vrf)#rd 2001:1601 Router-PE1(config-bgp-vrf)#address-family ipv4 unicast Router-PE1(config-bgp-vrf-af)#label mode per-vrf Router-PE1(config-bgp-vrf-af)#redistribute connected Router-PE1(config-bgp-vrf-af)#exit Router-PE1(config-bgp-vrf)#neighbor 192.13.26.5 Router-PE1(config-bgp-vrf-nbr)#remote-as 7501 Router-PE1(config-bgp-vrf-nbr)#address-family ipv4 unicast Router-PE1(config-bgp-vrf-nbr-af)#route-policy pass-all in Router-PE1(config-bgp-vrf-nbr-af)#route-policy pass-all out Router-PE1(config-bgp-vrf-nbr-af)#commit L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 29 CE1: router bgp 7501 bgp router-id 8.8.8.1 address-family ipv4 unicast address-family vpnv4 unicast neighbor 192.13.26.6 remote-as 2001 address-family ipv4 unicast route-policy pass-all in route-policy pass-all out L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 30 Last ack version 1, Last synced ack version 0 Outstanding version objects: current 0, max 0 Additional-paths operation: None Advertise VPNv4 routes enabled with defaultReoriginate,disable Local with stitching-RT option L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 31 Maximum stalepath time is 360 seconds Route refresh request: received 0, sent 0 Policy for incoming advertisements is pass-all Policy for outgoing advertisements is pass-all 0 accepted prefixes, 0 are bestpaths L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 32 Configure Multiprotocol BGP on the PE Routers and Route Reflectors, on page 12 For more details on BGP, see BGP Configuration Guide for Cisco NCS 540 Series Routers. Configure RIPv2 as the Routing Protocol Between the PE and CE Routers...
  • Page 33 Router-PE1(config-static-vrf-afi)#23.13.1.1/32 TenGigE0/0/0/0.1601 192.13.3.93 Router-PE1(config-static-vrf-afi)#commit Repeat the configuration in CE1, with the respective interface values. Running Configuration PE1: router static vrf vrf1601 address-family ipv4 unicast 23.13.1.1/32 TenGigE0/0/0/0.1601 192.13.3.93 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 34 Router-PE1(config)#router ospf pe-ce-ospf-vrf Router-PE1(config-ospf)#router-id 13.13.13.1 Router-PE1(config-ospf)#vrf vrf1601 Router-PE1(config-ospf-vrf)#redistribute connected Router-PE1(config-ospf-vrf)#redistribute bgp 2001 Router-PE1(config-ospf-vrf)#area 1 Router-PE1(config-ospf-vrf-ar)#interface TenGigE0/0/0/0.1601 Router-PE1(config-ospf-vrf-ar)# commit Repeat this configuration at PE2 node as well. CE1: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 35: Verify Mpls L3Vpn Configuration

    Verify the Overlay (L3VPN), on page 28 Verify the L3VPN Traffic Flow • Verify the number of bytes switched for the label associated with the VRF (vrf1601): L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 36: Verify The Underlay (Transport)

    24039 24167 20.20.20.1/32 Hu0/0/1/0 191.22.1.2 17872433 24167 20.20.20.1/32 Hu0/0/1/0 191.22.3.2 6345 24041 Aggregate vrf1601: Per-VRF Aggr[V] vrf1601 7950400999 • Verify if label is updated in the hardware: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 37 NHINDEX STATS: pkts 0, bytes 0 (no stats) RX H/W Result on NP:0 [Adj ptr:0x40 (BE)]: Rx-Adj is NOT required on this platform TX H/W Result for NP:0 (index: 0x189a8 (BE)): Next Hop Data L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 38: Verify The Overlay (L3Vpn)

    - internal, r RIB-failure, S stale, N Nexthop-discard Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 39 Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 24019 18.18.18.3/32 Hu0/0/1/0 191.31.1.89 11151725032 24030 24155 13.13.13.1/32 Hu0/0/1/0 191.31.1.89 3639895 24031 Aggregate vrf1601: Per-VRF Aggr[V] L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 40: Asbrs Exchanging Ipv4 Routes And Mpls Labels

    PASS-ALL in route-policy pass-all out Verification Router#show bgp ipv4 labeled-unicast BGP router identifier 60.200.11.1, local AS number 500 BGP generic scan interval 60 secs Non-stop routing is enabled L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 41 66.161.1.1/32, 3 dependencies, recursive, bgp-ext, bgp-multipath [flags 0x60a0] path-idx 1 NHID 0x0 [0x89113870 0x87b493e8] recursion-via-/32 next hop 66.161.1.1/32 via 66.161.1.1/32 local label 64006 next hop 66.161.1.1/32 BE161 labels imposed {ImplNull ImplNull} Router# L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 42: Configuring The Route Reflectors To Exchange Vpn-Ipv4 Routes

    10.200.1.1 remote-as 100 ebgp-multihop 255 update-source Loopback0 address-family vpnv4 unicast route-policy PASS-ALL in route-policy PASS-ALL out next-hop-unchanged address-family vpnv6 unicast route-policy PASS-ALL in route-policy PASS-ALL out next-hop-unchanged L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 43 REC-SHLDI HAL PD context : ecd_marked:0, collapse_bwalk_required:0, load_shared_lb:0 RSHLDI: PI:0xb7e387f8 PD:0xb7e38874 rev:0 p-rev:0 flag:0x1 FEC hdl: 0x890c0e98 fec index: 0x20004f9e(20382) num paths: 1 Path:0 fec index: 0x20004f9e(20382) DSP fec index: 0x2000120e(4622) L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 44: Configure The Route Reflectors To Reflect Remote Routes In Its As

    Router(config)#router bgp 500 Router(config-bgp)#address-family ipv4 unicast Router(config-bgp-af)#allocate-label all Router(config-bgp-af)#neighbor 60.200.11.1 Router(config-bgp-nbr)#remote-as 500 Router(config-bgp-nbr)#update-source loopback0 Router(config-bgp-nbr)#address-family ipv4 labeled-unicast Router(config-bgp-nbr-af)#route-reflector-client Router(config-bgp-nbr-af)#neighbor 60.200.12.1 Router(config-bgp-nbr)#remote-as 500 Router(config-bgp-nbr)#update-source loopback0 Router(config-bgp-nbr)#address-family ipv4 labeled-unicast Router(config-bgp-nbr-af)#route-reflector-client L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 45: Asbrs Exchanging Vpn-Ipv4 Addresses

    (ASBR) to exchange VPN-IPv4 routes with another autonomous system. Procedure Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters the XR Config mode. Step 2 router bgp autonomous-system-number Example: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 46 • Use the route-policy-name argument to define the name of the of route policy. The example shows that the route policy name is defined as pass-all. • Use the in keyword to define the policy for inbound routes. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 47 - Saves the configuration changes and remains within the configuration session. end - Prompts user to take one of these actions: • Yes - Saves configuration changes and exits the configuration session. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 48: Configuring A Static Route To An Asbr Peer

    - Prompts user to take one of these actions: • Yes - Saves configuration changes and exits the configuration session. • No - Exits the configuration session without committing the configuration changes. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 49: Confederation

    RP/0/RP0/CPU0:router(config-bgp)# bgp confederation peers 8 Configures the peer autonomous system number that belongs to the confederation. Step 4 bgp confederation identifier autonomous-system-number Example: RP/0/RP0/CPU0:router(config-bgp)# bgp confederation identifier 5 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 50 Applies a routing policy to updates received from a BGP neighbor. Step 10 route-policy route-policy-name out Example: RP/0/RP0/CPU0:router(config-bgp-nbr-af)# route-policy Out-Ipv4 out Applies a routing policy to updates advertised to a BGP neighbor. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 51: Configuring Mpls Forwarding For Asbr Confederations

    Step 2 router bgp as-number Example: RP/0/RP0/CPU0:router(config)# router bgp 120 RP/0/RP0/CPU0:router(config-bgp) Enters BGP configuration mode allowing you to configure the BGP routing process. Step 3 mpls activate Example: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 52: Configuring A Static Route To An Asbr Confederation Peer

    Enters XR Config mode. Step 2 router static Example: RP/0/RP0/CPU0:router(config)# router static RP/0/RP0/CPU0:router(config-static)# Enters router static configuration mode. Step 3 address-family ipv4 unicast Example: RP/0/RP0/CPU0:router(config-static)# address-family ipv4 unicast L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 53: Vrf-Lite

    To summarize, VRF-lite configuration involves these main tasks: • Create VRF • Configure VRF under the interface • Configure VRF under routing protocol Configuration Example • Create VRF: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 54 Router(config-rip-vrf)#default-information originate Router(config-vrf-import-rt)#commit Similarly configure vrf2 under rip, with interface TenGigE0/0/0/0.2000 and interface TenGigE0/0/0/1.2000 Running Configuration /* VRF Configuration */ vrf vrf1 address-family ipv4 unicast import route-target 100:100 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 55 /* Routing Protocol Configuration */ router rip interface Loopback0 interface TenGigE0/0/0/0 interface TenGigE0/0/0/0.2000 interface TenGigE0/0/0/0.2001 interface TenGigE0/0/0/1 interface TenGigE0/0/0/1.2000 interface TenGigE0/0/0/1.2001 vrf vrf1 interface TenGigE0/0/0/0.2001 interface TenGigE0/0/0/1.2001 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 56 203.0.113.0/24 is directly connected, 00:08:43, TenGigE0/0/0/1.2000 203.0.113.5/30 is directly connected, 00:08:43, TenGigE0/0/0/1.2000 192.0.2.0/24 is directly connected, 00:06:17, TenGigE0/0/0/0.2000 192.0.2.5/30 is directly connected, 00:06:17, TenGigE0/0/0/0.2000 Related Topics • VRF-lite, on page 43 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 57: Mpls L3Vpn Services Using Segment Routing

    • Configure protocol support on PE-CE (refer, Connect MPLS VPN Customers, on page 15 • Configure protocol support on PE-PE (refer, Configure Multiprotocol BGP on the PE Routers and Route Reflectors, on page L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 58: Configure Segment Routing In Mpls Core

    Route(config-isis-af)# mpls traffic-eng level-1 Route(config-isis-af)# mpls traffic-eng router-id loopback0 Route(config-isis-af)# segment-routing mpls Route(config-isis-af)# exit Route(config-isis)# interface loopback0 Route(config-isis-if)# address-family ipv4 unicast Route(config-isis-af)# prefix-sid index 30101 Route(config-isis-af)# exit Running Configuration PE1: L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 59 1 interface HundredGigE0/0/1/0 interface HundredGigE0/0/1/1 interface Loopback0 prefix-sid index 1 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 60 Loopback0 prefix-sid index 1 configure segment-routing global-block 180000 200000 configure router isis ring net 49.0001.1921.6800.1003.00 distribute link-state nsf cisco address-family ipv4 unicast metric-style wide mpls traffic-eng level-1 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 61: Verify Mpls L3Vpn Configuration Over Segment Routing

    ------ ----------- ------------------ ------------ --------------- --------- 24031 Aggregate vrf1601: Per-VRF Aggr[V] vrf1601 501241 Also, refer Verify MPLS L3VPN Configuration, on page 25 for a detailed list of commands and sample outputs. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 62: Implementing Mpls L3Vpns - References

    Packet forwarding information is stored in the IP routing table and the FIB table for each VRF. A separate set of routing and FIB tables is maintained for each VRF. These tables prevent information from being L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 63: Vpn Routing Information: Distribution

    PE routers. When a PE router forwards a packet received from a CE router across the provider network, it labels the packet with the label learned L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 64: Automatic Route Distinguisher Assignment

    With thousands of routers in a network each supporting multiple VRFs, configuration and management of route distinguishers across the network can present a problem. Cisco IOS XR software simplifies this process by assigning unique route distinguisher to VRFs using the rd auto command.

  • Page 65: Implementing Ipv6 Vpn Provider Edge Transport Over Mpls

    IPv6 services, from the edge, in a scalable way, without any IPv6 addressing restrictions and without putting a well-controlled IPv4 backbone in jeopardy. Backbone stability is essential for service providers that have recently stabilized their IPv4 infrastructure. L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 66: Benefits Of 6Pe/Vpe

    Service providers running an MPLS/IPv4 infrastructure follow similar trends because several integration scenarios that offer IPv6 services on an MPLS network are possible. Cisco Systems has specially developed Cisco 6PE or IPv6 Provider Edge Router over MPLS, to meet all those requirements.

  • Page 67: Ospfv3 6Vpe

    OSPFv3 6VPE The Open Shortest Path First version 3 (OSPFv3) IPv6 VPN Provider Edge (6VPE) feature adds VPN routing and forwarding (VRF) and provider edge-to-customer edge(PE-CE) routing support to Cisco IOS XR OSPFv3 implementation. This feature allows: • Multiple VRF support per OSPFv3 routing process •...

  • Page 68: Configuring 6Pe/Vpe

    Note For 6PE, you can use all routing protocols supported on Cisco IOS XR software such as BGP, OSPF, IS-IS, and Static to learn routes from both clouds. However, for 6VPE, you can use only the BGP, and Static routing protocols to learn routes.
  • Page 69 66:1:2::/64 is directly connected, 02:09:39, TenGigE0/0/0/0.2 66:1:2::1/128 is directly connected, 02:09:39, TenGigE0/0/0/0.2 66:1:3::/64isdirectlyconnected, [20/0] via fe80::200:2cff:fe64:99e2, 02:07:38, TenGigE0/0/0/0.2 2000:0:0:1c::/64 [20/0] via fe80::200:2cff:fe64:99e2, 02:07:38, TenGigE0/0/0/0.2 2000:0:0:1d::/64 Local PE : L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

  • Page 70: Configuring Ospfv3 As The Routing Protocol Between The Pe And Ce Routers

    This example shows how to configure provider edge (PE)-to-customer edge (CE) routing sessions that use Open Shortest Path First version 3 (OSPFv3). Router#config Router(config)#router ospfv3 7 Router(config-ospfv3)#nsr Router(config-ospfv3)#router-id 10.200.1.7 Router(config-ospfv3)#vrf vrf1 Router(config-ospfv3-vrf)#area 7 Router(config-ospfv3-vrf-ar)#interface Loopback7 Router(config-ospfv3-vrf-ar-if)#! Router(config-ospfv3-vrf-ar-if)#interface TenGigE0/0/0/3.7 Router(config-ospfv3-vrf-ar-if)# L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 71 Neighbors for OSPFv3 7, VRF vrf1 Neighbor ID State Dead Time Interface ID Interface FULL/DROTHER 10.201.7.1 00:00:36 TenGigE0/0/0/3.7 Neighbor is up for 1w0d Total neighbor count: 1 L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...
  • Page 72 Implementing IPv6 VPN Provider Edge Transport over MPLS Configuring OSPFv3 as the Routing Protocol Between the PE and CE Routers L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x...

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