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Tellabs 8600 Interface Configuration Manual

Managed edge system/access switch fp1.0/access switch fp1.1
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Tellabs
8600 Managed Edge System
®
Tellabs
8609 Access Switch FP1.0
®
Tellabs
8611 Access Switch FP1.1
®
Interface Configuration Guide
76.8610-50149A
18.08.2011

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  • Page 1 Tellabs 8600 Managed Edge System ® Tellabs 8609 Access Switch FP1.0 ® Tellabs 8611 Access Switch FP1.1 ® Interface Configuration Guide 76.8610-50149A 18.08.2011...

  • Page 2: Revision History

    © 2011 Tellabs. All rights reserved. This Tellabs manual is owned by Tellabs or its licensors and protected by U.S. and international copyright laws, conventions and treaties. Your right to use this manual is subject to limitations and restrictions imposed by applicable licenses and copyright laws.
  • Page 3 Logical Link Control Line Module Loss Of Frame Media Access Control MC-MLPPP Multiclass MLPPP Management GE 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...
  • Page 4 Real Time Real Time Clock Round Trip Time SAToP Structure-Agnostic Time Division Multiplexing over Packet Super Frame Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide © 2011 Tellabs.
  • Page 5 Virtual Path Virtual Path Connection Virtual Path Identifier Virtual Path Link VoIP Voice over IP Cross-Connection 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...
  • Page 6 Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide © 2011 Tellabs. ® ®...

  • Page 7: Table Of Contents

    Interface Numbering Conventions ..........................11 Document Conventions ..............................12 Documentation Feedback............................... 12 Overview ........................13 ETSI and ANSI Mode ............................13 Network Element Interfaces ..................14 Tellabs 8609 Access Switch ..........................14 2.1.1 Overview ............................. 14 2.1.2 Fixed Interfaces ........................... 14 2.1.3 Supported Line Modules ........................
  • Page 8 Management Port of SCM........................... 54 9.6.1 External Switch Operations ......................... 54 9.6.2 Investigating MGMT Protection Status....................54 Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide © 2011 Tellabs.
  • Page 9 Layer Descriptions......................55 PDH Layers ..................................55 Ethernet Layers ................................58 Port Protocols ................................. 59 Fault Management................................74 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ®...

  • Page 10: About This Manual

    • Documentation Feedback Objectives This manual provides an overview of the Tellabs 8609 access switch and Tellabs 8611 access switch interface functions and instructions on how to configure them using Command-Line Interface (CLI) and ASCII textual commands with a router’s console or remote terminal (Telnet).

  • Page 11: Interface Numbering Conventions

    Interface Numbering Conventions To be able to follow more easily the feature descriptions and configuration examples given in this document, see also the Tellabs 8600 system interface numbering and related figures described in Tellabs 8600 Managed Edge System CLI Commands Manual.

  • Page 12: Document Conventions

    Documentation Feedback Please contact us to suggest improvements or to report errors in our documentation: Email: fi-documentation@tellabs.com Fax: +358.9.4131.2430 Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ©...

  • Page 13: Overview

    1 Overview 1 Overview This document gives an overview of the data service interface features supported by the Tellabs 8609 access switch and Tellabs 8611 access switch. The emphasis is on the software configuration of the interfaces. The existing components, their features and installation instructions are presented in the documents mentioned below.

  • Page 14: Network Element Interfaces

    2.1.2 Fixed Interfaces The Tellabs 8609 access switch supports up to 12 Ethernet interfaces, which are fixed to the chassis of the NE. There are two virtual modules, M0 and M1, with each comprising of 4 Ethernet interfaces that support 100/1000BASE-X modes, in total there are 8 optical Gigabit Ethernet interfaces available.

  • Page 15: Supported Line Modules

    Ethernet Layer Failure Reporting 2.1.3 Supported Line Modules The Tellabs 8609 access switch provides two line module slots, M3 and M4, for the LMs. Any combination of the supported LMs is allowed in the slots. The following are the LMs currently supported: •...

  • Page 16: Plm Combination Rules

    2.2.2 PLM Combination Rules The Tellabs 8611 access switch provides four PLM slots, numbered M0 through M3 for the LMs and three PLM slots, numbered M4 through M6, for the HMs. The NE architecture set some rules to the PLMs equipping as following: •...
  • Page 17 2 Network Element Interfaces Fig. 1 LM Combination Fig. 2 HM Combination 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...

  • Page 18: Physical Line Modules

    3 Physical Line Modules 3 Physical Line Modules This section describes PLM types supported by the: • Tellabs 8609 access switch • Tellabs 8611 access switch Line Modules This section describes different media type of LMs supported by: • Tellabs 8609 access switch •...
  • Page 19 3 Physical Line Modules NE and LM Type: Tellabs 8609 Access Switch, Tellabs 8611 Access Switch and 8xchE1/chT1 TLP Type Unframed Framed Nx64k (for ATM and MLPPP N is fixed) Service MPLS PWE3 MPLS PWE3 Routing Switching Routing Switching —...
  • Page 20 The PPP and Multilink PPP (MLPPP) interface enables the NE to be connected to another Tellabs 8600 NE or third party equipment using a single logical link having capacity of several P12s/DS1 [RFC1990]. Within MLPPP the following features are supported: •...

  • Page 21: 8X10/100Base-Tx Lm

    The 8x10/100BASE-TX LM supports: • 256 VLANs per port • Port based Ethernet PWE3 • Ethernet tagged mode PWE3 [RFC4448] 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ®...

  • Page 22: High Speed Modules

    The 8x10/100BASE-TX LM supports the following configuration options: Configuration Option Ethernet Physical Layer Configuration Ethernet Layer Failure Reporting High Speed Modules The Tellabs 8611 access switch provides support for High speed Modules (HM) covered in this section. 3.2.1 4x100/1000BASE-X HM Overview The 4-port (optical) Gigabit Ethernet HM supports 100/1000BASE-X interfaces.

  • Page 23: 4X10/100/1000Base-Tx Hm

    • Synchronous Ethernet concept where the Ethernet egress can be synchronized to Timing Module. See Tellabs ® 8600 Managed Edge System Synchronization Configuration Guide for more details • Ethernet line and equipment loopbacks • IEEE802.1ag Ethernet OAM Fault Management • Loopback (ping) function •...
  • Page 24 3 Physical Line Modules The Tellabs 8600 system supports VLAN tagging on Ethernet interfaces. All interfaces can accept VLAN-tagged, priority-tagged and untagged frames. Double tagged VLAN frames 802.1q-in-q are also supported. The interfaces perform input filtering based on the VLAN identifiers. The Ethernet ports can be configured to optionally discard all untagged and priority-tagged frames.

  • Page 25: Management Port (Mgmt)

    MGMT port on each SCM of the Tellabs 8611 access switch. From configuration and functionality point of view, the MGMT port is as any other Ethernet port of the Tellabs 8600 system. In addition to the local management access, the MGMT port provides access to the network for the management communication traffic.

  • Page 26: Fault Management Operation And Configuration

    The f2 and f3 filters are only applied to TDM layer (layer L1) defects by the Tellabs 8600 NE. Failure filter f4 integrates fault cause failures (detected faults) by performing a persistency check on the fault before it declares the fault cause a failure [ETS 300 417-7-1].

  • Page 27: Fault Suppression

    5.1.2 Fault Suppression In the Tellabs 8600 system AIS, RDI and SSF faults are suppressed by default. This is based on the principles that in a homogenous Tellabs 8600 NE a network failure is reported only once by the NE which detects the primary reason of the failure.

  • Page 28: Performance Monitoring

    — neUas Unavailable Seconds PDH Far-End Performance Primitives Name PDH layer Primitive E1 PHY P12s Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide © 2011 Tellabs. ® ®...

  • Page 29: Gr-253/Gr-820 Performance Monitoring

    Errored Seconds — feSes Severely Errored Seconds — feUas Unavailable Seconds — — feFc Failure Count 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...

  • Page 30: Ansi Loopback Operations

    The operator can invoke a remote loopback by generating a remote loopback command. In the Tellabs 8600 system it is possible to generate the commands only to the line direction of the DS1 interface. The remote loopback request does not contain any dedicated information about the line/equipment loop selection.

  • Page 31: Remote Loopback Methods

    10 times to the facility data link. If the far-end is capable of detecting the codes, it performs the loop. The Tellabs 8600 system monitors all the activation/deactivation codes shown in the table above at the time in a particular DS1 interface without any configuration.

  • Page 32: Loopback Example In Cesopsn, And Multiservice Applications

    • Example d) in the figure below shows how a line loopback is activated remotely. The DS1 inter- faces in the Tellabs 8600 NEs are in unframed modes and therefore only inband commands can be sent and received. However, both unframed and framed inband commands are available.
  • Page 33 7 ANSI Loopback Operations Fig. 5 DS1 Loops in the Case of DS1 Multiservice Interface and DS1 CESoPSN PWE3 Service 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ®...

  • Page 34: References

    ITU-T Recommendation I.371 (2000-03), Traffic control and congestion control in B-ISDN [I.432.1] ITU-T Recommendation I.432.1 (1999-02), B-ISDN user-network interface – Physical layer specification: General characteristics Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ©...
  • Page 35 T1.403 (1999), Network and customer Installation interfaces – DS1 electrical interface. It defines the electrical characteristics of the physical DS1 signal, connectors and additionally the DS1 framing format 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide...

  • Page 36: Interface Configuration Examples

    Tellabs 8630 access switch or Tellabs 8660 edge switch where the line card slot number is part of the interface name (e.g. ge 5/1/0). Card slot is not applicable to Tellabs 8609 access switch , therefore the syntax applied to this NE should follow module#/Interface#.

  • Page 37: Basic Configuration

    The following step list contains basic configuration commands that are often used when configuring interfaces in the Tellabs 8600 system. The list is not comprehensive, and there are optional commands that are not necessarily required in order to get an interface working. For more information on how to configure an interface of a certain type, refer to the interface specific sections...

  • Page 38: Checking Interface Configuration Status And Basic Troubleshooting

    This section shows commands that can be used when looking for information on the status of an interface. See also Tellabs ® 8600 Managed Edge System Test and Measurement Configuration Guide for information on tools for testing connections. Tellabs 8600 Managed Edge System 76.8610-50149A...
  • Page 39 Description Use this command to check the hw-inventory NODE# show hw-inventory configuration of your Tellabs 8600 equipment. You can use this command to check that all components (IFC, IFM) of the equipment show up in the hw-inventory configuration as expected.
  • Page 40 For example, use the ether-logical parameter to clear the counters of the Ethernet interface only. Refer to Tellabs 8600 Managed Edge System ® CLI Commands Manual for information on the parameters available for all types of interfaces.

  • Page 41: Ethernet Basic Configuration

    9 Interface Configuration Examples Ethernet Basic Configuration This section shows basic configurations of the Ethernet interface in the Tellabs 8600 system. Basic Configuration Commands for Ethernet Interfaces Command Description connectivity-type Define the connectivity type (routing or tunneling) of the interface.

  • Page 42: Selecting Operation Mode

    Auto-Negotiation function. 100 duplex full The Auto-Negotiation function will try to negotiate the speed to 100 Mbps and to full-duplex mode. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ©...

  • Page 43: Vlan Management

    8xchE1/chT1 LM This chapter contains configuration examples of transmission layers of the PDH interfaces in the 8xchE1/chT1 LM. 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ®...

  • Page 44: Starting Configuration

    2/2/0..7 fe 2/3/0..7 pdh 2/3/0..7 9.5.1 Starting Configuration The PDH interface is accessed in the same way as any other interface in the Tellabs 8600 NEs. Command Description Enter the Interface Configuration mode. If the NODE> enable specified interface is valid to be taken into use, the...

  • Page 45: Configuring E1/T1 Physical Layer Interface

    Configure the PDH interface to report AIS and RDI NODE(cfg-if[pdh4/1/0:0])# interface pdh failures. 4/1/0 NODE(cfg-if[pdh4/1/0])# pdh report p12s NODE(cfg-if[pdh4/1/0])# pdh report p12s 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...

  • Page 46: Configuring Ds1 Layer For Atm

    The HDLC PWE3 or port protocol HDLC creates an interface that can be attached to pseudowire only and it cannot terminate. The HDLC PWE3 can carry any kind of traffic that uses HDLC protocol, i.e.: PPP. The Tellabs 8600 system implementation of the HDLC PWE3 conforms to [RFC4618].

  • Page 47: Configuring P12S/Ds1 For Ppp And Mlppp

    3700 µs within 5 seconds and take the link out of use. The link will be taken back into use within 13 seconds if measured consecutive one-way differential delay is below maximum differential delay restore value limit. 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide...
  • Page 48 4/1/2:0 NODE(cfg-if[mp4/0])# exit MLPPP Differential Delay Monitoring The following is an example showing the performance of MLPPP differential delay monitoring. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ©...
  • Page 49 9 Interface Configuration Examples Fig. 6 MLPPP Differential Delay Performance 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...
  • Page 50 3 lower priority frames. In the Tellabs 8600 NEs the default QoS mapping to DiffServ traffic classes is covered in Mapping Consideration. However in cases where the default QoS mapping needs to be modified (e.g.
  • Page 51 MC-MLPPP Status The following is an example showing the status of MC-MLPPP operation. Fig. 7 MC-MLPPP Status 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ®...

  • Page 52: Configuring Ansi Remote Loopbacks

    For details of the supported commands and options to adjust PDH fault monitoring and reporting, please refer to Tellabs 8600 Managed Edge System CLI Commands Manual. ® The following samples of commands give an example of adjusting fault monitoring and reporting for P12s and DS1.
  • Page 53 NODE(cfg-if[pdh4/1/0])# pdh excessive- excessive error faults. error—a threshold 4 NODE(cfg-if[pdh4/1/0])# pdh excessive- error—b threshold 8 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...

  • Page 54: Management Port Of Scm

    9 Interface Configuration Examples Management Port of SCM The MGMT port on SCM of Tellabs 8611 access switch automatically becomes protected when another SCM is added to the inventory of the network element and SCM becomes an equipment protected card. Therefore, the Tellabs 8611 access switch does not have separate commands for establishing or removing the MGMT protection group.

  • Page 55: Layer Descriptions

    RX/TX interface pair. This mode is know as loop timing. Loop timing can be used e.g. when the last element in the edge of the network has an E1/T1 interface but does not have any other reason to use an accurate clock. Refer to Tellabs 8600 ®...
  • Page 56 DS1 Physical Layer Configuration DS1 Line Loops See section 7 ANSI Loopback Operations for a detailed explanation of loops in the DS1 interface. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ©...
  • Page 57 Fault Conditions Detected, Reporting Fault Conditions Detected, Default Enabled by Default Reporting disabled LOF (loss of frame) enabled 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ® ®...

  • Page 58: Ethernet Layers

    The system monitors the existence of the SFP modules. The Tellabs 8600 NEs generate an alarm (Missing connector module) if the SFP stick of an interface is not present (or it is broken).

  • Page 59: Port Protocols

    Ethernet OAM The Ethernet OAM functionality supported in the Tellabs 8600 system is covered in Tellabs 8600 ® Managed Edge System Ethernet Configuration Guide. Port Protocols ATM Interface (Transmission Convergence) Layer Configuration An ATM interface provides the ATM transmission convergence layer functionality and de-couples the ATM cell processing from TDM frame processing.
  • Page 60 Tellabs 8600 Managed Edge System ATM and TDM ® Configuration Guide. IMA scalability is shown in the following table. Tellabs 8609 Access Switch and Tellabs 8611 Access Switch IMA Scalability P12s/DS1 Maximum number of IMA groups...
  • Page 61 PDH interface usage configuration connected connected Timeslot group usage configuration Port protocol The TDM pseudowire functionality is detailed described in Tellabs 8600 Managed Edge System ® ATM and TDM Configuration Guide. Nx64k CESoPSN TDM PWE3 Layer Configuration The framed PDH interface (P12s/DS1) can be configured to have several timeslot groups. Each group can be configured to TDM/CESoPSN mode to terminate CESoPSN PWE3 encapsulation...
  • Page 62 Layer Descriptions The TDM pseudowire functionality is detailed described in Tellabs ® 8600 Managed Edge System ATM and TDM Configuration Guide. PPP Layer Configuration A Point-to-Point Protocol (PPP) provides a method for transporting multi protocol datagrams by providing encapsulation for different network layer protocols over the same link. PPP is used for multiplexing different network layer protocols such as Internet Protocol (IP), Multiprotocol Label Switching (MPLS) by providing PPP encapsulation over the same link.
  • Page 63 When frames to be multiplexed are larger than the configured subframe length, the frames are transmitted without multiplexing and hence bandwidth efficiency is not be achieved. The Tellabs 8600 system supports: • Multiplexing/de-multiplexing of CS7 and EF traffic classes •...
  • Page 64 The receiving side accepts these fragments, reorders and reassembles the fragments into a complete frame using the sequence numbers. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide...
  • Page 65 When interleaving is enabled in Tellabs 8600 system packets with CS7 and EF traffic classes are interleaved while the packets with other traffic classes are fragmented. Interleaving is also supported with PPPMux to achieve efficient bandwidth and latency improvement.
  • Page 66 MLPPP group. A frame can be sent further only when all fragments have been received, therefore the slowest path defines the overall delay. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs...
  • Page 67 • Statistical analysis of received frame, i.e. arrival time and sequence numbers The Tellabs 8600 system uses frame based method to measure the MLPPP differential delay. Explicit test frames are used as PPP Echo Request and Echo Reply [RFC1661] payload. A one-way differential delay of links is measured using the hardware based timestamps included in Echo-packets.
  • Page 68 When Address and Control Field Compression (ACFC) is enabled , the PPP header would exclude the address and control field. When Protocol Field Compression (PFC) is enabled, the leading zeroes in PID would be excluded. The Tellabs 8600 system by default disables ACFC, while PFC is enabled.
  • Page 69 Fig. 8 MC-MLPPP MP Header QoS Mapping Consideration The Tellabs 8600 system supports a maximum of 4 multi link transmit classes (suspension levels). Maximum up to 3 multi link classes can be enabled at the same time. Depending on the networking conditions 1..7 DiffServ traffic classes can be mapped to 1..3 multi link classes.
  • Page 70 The latency improvement with MC-MLPPP is more evident, when low priority frames are interrupted frequently by the high priority frames. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs...
  • Page 71 Tla = Tfbe + Tcs7 Where: • Tfbe is the time taken to transfer one BE fragment. Tfbe = (375*8 bits)/1920 kbps = 1.560 ms 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide...
  • Page 72 However, the processing delay (typically less than 1 ms) is also present and thus theoretical delays will not be achieved exactly. Configuration Options The available configuration options required for MC-MLPPP are presented below. Tellabs 8609 Access Switch and Tellabs 8611 Access Switch MC-MLPPP Configuration Range TX traffic classes 1–4...
  • Page 73 The latency of PPP multiplexed frame when MC-MLPPP is enabled in this example is 5.62 ms. However, the processing delay (typically less than 1 ms) is also present and thus theoretical delays will not be achieved exactly. 76.8610-50149A Tellabs 8600 Managed Edge System ® © 2011 Tellabs. Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide...

  • Page 74: Fault Management

    Fault Management The supported TDM fault management function is available as described in chapter 5 Fault Management Operation and Configuration. Tellabs 8600 Managed Edge System 76.8610-50149A ® Tellabs 8609 Access Switch FP1.0 Tellabs 8611 Access Switch FP1.1 Interface Configuration Guide ©...

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