3COM 5000 ATM User Manual

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CoreBuilder® 5000 ATM

Backbone SwitchModule User Guide

http://www.3com.com

Part Number 10013037 Published November 1999

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

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ONTENTS

BOUT THIS GUIDE

Introduction 1 Audience 1 How to Use This Guide 1 Conventions 2 Related Documents 3

3Com Documents 3 Reference Documents 4 SNMP and MIB-Based Information 4 ATM and LAN Documents 5

NTRODUCTION

ATM Backbone SwitchModule Overview 1-1

ATM Backbone SwitchModule Features 1-1

Seamless ATM Migration 1-1 Multiple Redundancy Levels 1-2 ATM Forum Specification Compliance 1-2 CoreBuilder 5000 Chassis Compatibility 1-2 Switched Virtual Circuit Capacity 1-2 Emulated LAN (ELAN) Capacity 1-2

Hot Swap Feature 1-3 Supported CoreBuilder 5000 SwitchModules 1-3 Supported Management Standards 1-4

ATM Backbone SwitchModule Architecture 1-4

Management Processor 1-5 Packet Switch Processor 1-5 Primary ATM OC-3 Card 1-5 Redundant ATM OC-3 Card 1-5

ATM Backbone SwitchModule Descriptions 1-6

Base Hardware Configuration 1-6 Redundant Hardware Configuration 1-7

PacketChannel Backplane Description 1-8

Slot Restrictions Per Backplane 1-8

Sample ATM Backbone SwitchModule Configurations 1-10

Basic Configuration 1-10 Dual-Homing Configuration 1-11 Dual-Homing/Module Redundancy

Configuration 1-12

LAN E

General Definition of LAN Emulation 2-1 LAN Emulation Components 2-3

LAN Emulation Data Exchange 2-5

LAN Emulation Connections 2-7

LAN Emulation Operation 2-9

MULATION OVERVIEW

General LANE Components 2-3

LAN Emulation Client (LEC) 2-3 LAN Emulation Configuration Server (LECS) 2-3 LAN Emulation Server (LES) 2-3 Broadcast and Unknown Server (BUS) 2-4

ATM Backbone SwitchModule LANE Components 2-4

Bridgeport-LEC 2-4 Virtual Bridge (vbridge) 2-5 Emulated LAN (ELAN) 2-5

Protocol Stacks 2-5 Packets Versus Cells 2-6

Control VCCs 2-7 Data VCCs 2-8

Initialization 2-9 LECS Connection 2-10 Configuration 2-10 Joining 2-10 BUS Connection 2-11 Data Movement 2-11

ONFIGURING THE

Configuration Tools 3-1

Distributed Management Module 3-2 Advanced Management Tools 3-2

Transcend Network Control Services for UNIX 3-2

Transcend Network Management Software for Windows 3-3

Third-Party SNMP-Based Tools 3-4

Setting Up DMM Access 3-5

Setting Up Direct Terminal Access to the DMM 3-5 Configuring TELNET Access to the DMM 3-5

Configuration Process Overview 3-6

Configuration Components 3-6

LAN Emulation Configuration 3-6

Bridge Configuration 3-6

ATM Configuration 3-7 Configuration Defaults 3-7

Configuring LAN Emulation Parameters 3-8

Automatic Bridgeport-LEC Configuration Mode 3-8

Manual Bridgeport-LEC Configuration Mode 3-8

Verifying Bridgeport-LEC Status 3-9

Configuring ATM OC-3 Card Redundancy 3-9 Configuring IGMP Snooping Parameters 3-10

ATM B

ACKBONE SWITCHMODULE

TATUS MONITORING AND STATISTICS

Using DMM/ADMM Commands 4-1

SHOW VBRIDGE 4-2

Displaying General Vbridge Configuration Information 4-2

Displaying Detailed Vbridge Configuration Information 4-3

Displaying IGMP Snooping Vbridge Information 4-4 SHOW MODULE 4-5 SHOW BRIDGE_PORT 4-6

Displaying General Status Information 4-6

Displaying Detailed Information 4-7 SHOW COUNTER BRIDGE_PORT 4-8 SHOW ATM 4-9

ATM Interface Parameters 4-9 ATM ILMI Configuration 4-10 ATM Q93b Parameters 4-10 ATM QSAAL Parameters 4-11 ATM Signal Configuration 4-11 ATM Statistics 4-12 ATM Traffic Description 4-12 ATM VCCs 4-13 SHOW BPORT_LEC 4-13 BPORT_LEC Configuration 4-14 BPORT_LEC Statistics 4-15 BPORT_LEC Status 4-15 BPORT_LEC Server Circuits 4-16 BPORT_LEC

LE_ARP Table 4-16 SHOW SONET 4-17 SHOW SONET Status 4-17 SHOW SONET Statistics 4-18 SHOW IGMP SNOOPING 4-19

Using Graphical Interface Tools 4-20

CoreBuilder 5000 Manager 4-20 Device Management for Hubs 4-21 VLAN Manager 4-21 LANE Manager 4-21

NTERNET GROUP MANAGEMENT PROTOCOL

NOOPING

Overview 5-1 CoreBuilder 5000 Support 5-6 Locating Multicast Routers in the Network 5-6 No Multicast Routers on the Network 5-6 Enabling IGMP Snooping on CoreBuilder 5000 SwitchModules 5-7

(IGMP)

ROUBLESHOOTING

Troubleshooting Using LEDs 6-1

Troubleshooting Base Module LEDs 6-1

Verifying Base Module LED Operation 6-1

Reading the Base Module LEDs 6-2

Determining Corrective Action 6-3 Troubleshooting ATM OC-3 Card LEDs 6-4

Recovering from Problems 6-5

Verifying DMM Communication 6-5 Verifying Software Versions 6-6 Verifying Critical Parameters 6-7 Verifying ATM OC-3 Card Functions 6-7 Verifying ATM Signaling Functions 6-8 Verifying LEC Functions 6-9 Verifying Bridging Configuration 6-11 Verifying Data Movement 6-11 Verifying ATM OC-3 Switchover 6-12

Resetting the ATM Backbone SwitchModule 6-12

Using the Reset Button 6-12

Obtaining Technical Assistance 6-13

PECIFICATIONS

Environmental Specifications A-1 Mechanical Specifications A-1 Power Specifications A-2 ATM OC-3 Card Fiber Optic Specifications A-2

ECHNICAL SUPPORT

Online Technical Services B-1

World Wide Web Site B-1 3Com Knowledgebase Web Services B-1 3Com FTP Site B-2 3Com Bulletin Board Service B-2

Access by Analog Modem B-2 Access by Digital Modem B-3

3Com Facts Automated Fax Service B-3 Support from Your Network Supplier B-3 Support from 3Com B-3 Returning Products for Repair B-5

NDEX

3COM C

ORPORATION LIMITED WARRANTY

IGURES

ATM Backbone SwitchModule Hardware Components 1-4

1-1

ATM Backbone SwitchModule Base Configuration 1-6

1-2

ATM Backbone SwitchModule with Redundant ATM OC-3 Card 1-7

1-3

Example Base Configuration 1-10

1-4

Example Dual-Homing Configuration 1-11

1-5

Example Dual-Homing/Module Redundancy Configuration 1-12

1-6

LAN Emulation Function 2-2

2-1

ATM Backbone SwitchModule Function 2-2

2-2

General LAN Emulation Components 2-3

2-3

ATM Backbone SwitchModule LANE Components 2-4

2-4

LAN Emulation Protocol Stacks 2-5

2-5

Converting SwitchModule Packets to and from ATM Cells 2-6

2-6

Control VCCs in ATM Backbone SwitchModule LAN Emulation 2-7

2-7

Data VCCs in ATM Backbone SwitchModule LAN Emulation 2-8

2-8

UNIX Tools for Configuring ATM Backbone SwitchModules 3-3

3-1

Windows Tools for Configuring ATM Backbone SwitchModules 3-4

3-2

Multicast Packet Path before Snooping 5-3

5-1

Format of an IGMP Version 1 Message 5-4

5-2

Multicast Packet Path after Snooping 5-4

5-3

FTE DRAM Address Forwarding Entry 5-8

5-4

ABLES

Notice Icons 2

Text Conventions 2

Supported Standards and MIBs 1-4

1-1

SwitchModule Installation Per Backplane 1-8

1-2

Other Vbridge IGMP Snooping Options 4-4

4-1

Base Module LED Status 6-2

6-1

Base Module LED Corrective Actions 6-3

6-2

ATM OC-3 Card LED Corrective Actions 6-4

6-3

Environmental Specifications A-1

A-1

Mechanical Specifications A-1

A-2

Power Specifications A-2

A-3

ATM Backbone SwitchModule Fiber Optic Specifications A-2

A-4

BOUT

HIS

UIDE

Introduction

Audience

How to Use This Guide

This guide describes how to install, configure, and manage the 3Com CoreBuilder

If the information in the release notes shipped with your product differs

from the information in this guide, follow the release note instructions.

This guide is intended for the following people at your site:

■

Network manager or administrator

■

Trained hardware installer or service personnel

The following table shows the location of specific information:

If you are looking for: Tu r n t o :

ATM Backbone SwitchModule features, descriptions, and example configurations

An overview of LAN Emulation concepts, components, and operation

Information on configuring ATM Backbone SwitchModules Chapter 3

Information on monitoring ATM Backbone SwitchModule operation

Information about Information Group Management Protocol (IGMP) snooping

Information on troubleshooting ATM Backbone SwitchModule LEDs, management problems, and resetting ATM Backbone SwitchModules

Detailed ATM Backbone SwitchModule specifications Appendix A

3Com technical support information Appendix B

5000 ATM Backbone SwitchModule.

Chapter 1

Chapter 2

Chapter 4

Chapter 5

Chapter 6

BOUT THIS GUIDE

Conventions

The following tables list conventions used throughout this guide:

Table 1

Icon Ty p e Description

Table 2

Convention Description

Enter vs. Type When the word

Syntax vs. Command

Notice Icons

Information Note Information notes call attention to important features

or instructions.

Caution Cautions alert you to personal safety risk, system

damage, or loss of data.

War ning Warnings alert you to the risk of severe personal injury.

Text Conventions

enter

something, then press the Return or Enter key. Do not press the Return or Enter key when instructed to

Syntax

indicates that the general form of a command syntax is provided. You must evaluate the syntax and supply the appropriate port, path, value, address, or string. For example:

Enable RIPIP by using the following syntax:

SETDefault !<port> -RIPIP CONTrol = Listen

In this example, you must supply a port number for !<port>.

Command

have been supplied and you can enter the command as shown in text. For example:

Remove the IP address by entering the following command:

SETDefault !0 -IP NETaddr = 0.0.0.0

For consistency and clarity, the full-form syntax (upperand lowercase letters) is provided. However, you can enter the abbreviated form of a command by typing only the uppercase portion and supplying the appropriate port, path, address, value, and so on. You can enter the command in either upper- or lowercase letters at the prompt.

indicates that all variables in the command

is used in this guide, it means type

type

ATM Backbone SwitchModule Overview

This chapter describes the features and components of the 3Com CoreBuilder Backbone SwitchModules operate.

This chapter contains the following sections:

■

ATM Backbone SwitchModule Overview

■

ATM Backbone SwitchModule Architecture

■

ATM Backbone SwitchModule Descriptions

■

PacketChannel Backplane Description

■

Sample ATM Backbone SwitchModule Configurations

CoreBuilder 5000 ATM Backbone SwitchModules are high-performance LAN-switching modules for the 3Com CoreBuilder 5000 Integrated System Hub.

This section describes:

■

ATM Backbone SwitchModule Features

■

Supported CoreBuilder 5000 SwitchModules

■

Supported Management Standards

5000 ATM Backbone SwitchModules and how ATM

ATM Backbone

SwitchModule

Features

ATM Backbone SwitchModules provide the following features.

Seamless ATM Migration

The ATM Backbone SwitchModule protects your investment in LAN equipment, wiring, and software by providing seamless LAN-to-ATM communication. You can connect existing Ethernet, Fast Ethernet, and FDDI legacy LANs with 155 Mbps ATM backbones.

1-2

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NTRODUCTION

Multiple Redundancy Levels

You can configure the ATM Backbone SwitchModule for two levels of redundancy:

■

PHY Redundancy

— A secondary ATM OC-3 card provides PHY redundancy. If the primary ATM OC-3 card or attached cable fails or performance fails or is no longer receiving light, the redundant ATM OC-3 card becomes active to maintain operations, if PHY switchover is enabled.

■

Module Redundancy

— Adding a second ATM Backbone SwitchModule to the CoreBuilder 5000 hub in a dual-homing configuration allows you to load-balance ATM requirements while providing automatic module failover if one of the modules fails.

ATM Forum Specification Compliance

The ATM Backbone SwitchModule is fully compliant with the following ATM Forum specifications:

■

UNI 3.0/3.1

■

LANE 1.0

CoreBuilder 5000 Chassis Compatibility

You can install and operate the ATM Backbone SwitchModule in any CoreBuilder 5000 17-slot, 10-slot, or 7-slot chassis that contains a PacketChannel backplane.

Switched Virtual Circuit Capacity

Each ATM Backbone SwitchModule supports up to 512 simultaneous switched virtual circuit (SVC) connections.

Emulated LAN (ELAN) Capacity

Each ATM Backbone SwitchModule provides up to 64 LAN Emulation Clients (LECs) for connection to 64 Emulated LANs (ELANs). These virtual LANs can be managed using the 3Com Transcend

Enterprise VLAN Manager (v4.1 or later), a graphical interface tool that greatly simplifies the management of virtual and emulated LANs.

ATM Backbone SwitchModule Overview

Hot Swap Feature

You can insert or remove ATM Backbone SwitchModules without powering off the CoreBuilder 5000 chassis.

1-3

Supported

CoreBuilder 5000

SwitchModules

CoreBuilder 5000 ATM Backbone SwitchModules provide ATM connectivity for the following CoreBuilder 5000 SwitchModules:

■

2-Port DAS FDDI SwitchModule (3C96604M-F)

■

2-Port DAS FDDI SwitchModule (3C96604M-F-A)

■

4-Port 100BASE-FX SwitchModule (3C96604M-FX-A)

■

4-Port 100BASE-TX SwitchModule (3C96604M-TX-A)

■

10-Port 10BASE-F SwitchModule (3C96610M-F-ST)

■

10-Port 10BASE-F-A SwitchModule (3C96610M-F-A)

■

FDDI CONC (MIC) (3C96612M-FC-A)

■

10-Port 10BASE-T/DAS FDDI SwitchModule (3C96612M-FF-A)

■

12-Port 10BASE-T SwitchModule (3C96612M-TP)

■

12-Port 10BASE-T SwitchModule (3C96612M-TP-A)

■

12-Port 10BASE-T/DAS FDDI SwitchModule (3C96614M-FTP-A)

■

16-Port Ethernet Backplane SwitchModule (3C96616M-BTP-A)

■

18-Port Fast Ethernet 100BASE-T SwitchModule (3C96618M-TX-A)

■

20-port 10BASE-F SwitchModule (3C96620M-F-ST)

■

20-Port 10BASE-F SwitchModule (3C96620M-F-A)

■

20-Port Ethernet 10BASE-T SwitchModule (3C96620M-TP-A)

■

24-Port 10BASE-T SwitchModule (3C96624M-TP-A)

■

24-Port Telco SwitchModule (3C96624M-TPL-A)

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Supported

Management

Standards

ATM Backbone SwitchModule Architecture

CoreBuilder 5000 ATM Backbone SwitchModules support the standards and MIBs shown in Table 1-1.

Ta b le 1 - 1

Standards

MIBs

Supported Standards and MIBs

ATM Forum UNI 3.0/3.1 ATM Forum LANE 1.0 IEEE 802.1D (Spanning Tree) IEEE 802.1H (Translation) IEEE 802.3 SNMP (RFC 1157) Bridge MIB (RFC 1493) MIB II (RFC 1213) Interfaces MIB (RFC 1573) ATM MIB (RFC 1695) SONET MIB (RFC 1595) ATM Forum LEC MIB IANAIFTYPE MIB 3Com ISD MIB

This section describes the hardware components of the CoreBuilder 5000 ATM Backbone SwitchModule.

Figure 1-1 identifies the significant hardware components of the ATM Backbone SwitchModule.

CoreBuilder®5000 hub PacketChannel backplane

Figure 1-1

ATM Backbone SwitchModule

LAN Emulation

Packet Swit ch Processor

Management Processor

Primary ATM OC-3 card

Redundant ATM OC-3 card

ATM Backbone SwitchModule Hardware Components

155Mbps OC-3 multimode fiber

ATM Backbone SwitchModule Architecture

The significant hardware components of the ATM Backbone SwitchModule include:

■

Management Processor

■

Packet Switch Processor

■

Primary ATM OC-3 Card

■

Redundant ATM OC-3 Card

1-5

Management

Processor

Packet Switch

Processor

Primary ATM OC-3

Card

Redundant ATM OC-3

Card

The Management Processor performs processing functions that are not time critical. Its main functions include:

■

Network management

■

ATM signalling

■

ATM LAN emulation client (LEC) functions

■

Bridging functions

■

Forwarding table maintenance

The Packet Switch Processor performs time-critical processing functions such as packet forwarding.

The primary ATM OC-3 card provides a SONET PHY ATM interface operating at 155 Mbps on OC-3, multimode fiber over an SC-type connector. The maximum distance between links is 2 kilometers.

The redundant ATM OC-3 card is identical to the primary ATM OC-3 card. It becomes active in place of the primary ATM OC-3 card if any of the following characteristics are lost:

■

Light

■

Frame

■

Cell delineation

■

ATM signalling

■

ILMI (Integrated Local Management interface) channel information

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NTRODUCTION

ATM Backbone SwitchModule Descriptions

Base Hardware

Configuration

This section describes the base and redundant hardware configurations of the ATM Backbone SwitchModule.

Figure 1-2 shows the ATM Backbone SwitchModule with only the primary ATM OC-3 card installed.

MOD-STAT

PACKETCHANNEL

RESET

Base Module (3C96602M-MOD)

ACTIVE

ALARM

6 6 0 1 D

-1 5 5 S C

-M M

Primary ATM OC-3 card included with base

6602-MOD

Figure 1-2

ATM Backbone SwitchModule Base Configuration

ATM Backbone SwitchModule Descriptions

1-7

Redundant Hardware

Configuration

Figure 1-3 shows the ATM Backbone SwitchModule with an optional redundant ATM OC-3 card installed.

MOD-STAT

PACKETCHANNEL

RESET

Base Module (3C96602M-MOD) includes primary ATM OC-3 card

6 6 0 1 D

-1 5 5 S

-M M

ACTIVE

ALARM

ACTIVE

ALARM

6 6 0 1 D

-1 5 5 S C

-M M

Redundant ATMOC-3 card (3C96601D-155SC-MM)

6602-MOD

Figure 1-3

See the

ATM Backbone SwitchModule with Redundant ATM OC-3 Card

CoreBuilder

and Reference

5000 ATM Backbone SwitchModule Quick Start

for how to install the redundant ATM OC-3 card.

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NTRODUCTION

PacketChannel Backplane Description

An ATM Backbone SwitchModule installed in the CoreBuilder 5000 hub connects to the CoreBuilder 5000 PacketChannel backplane. There are two kinds of PacketChannel backplanes:

■

Standard PacketChannel

— Supports packet-switching. When you display hub information, the hub type is listed with the suffix -xP (x may be A or B) to identify this backplane, and the backplane type is listed as PacketChannel.

■

PacketChannel plus ATM Cell-Switching (SwitchChannel)

— Supports both packet-switching and ATM cell-switching. When you display hub information, the hub type is listed with the suffix -xC (x may be A or B) to identify this backplane, and the backplane type is listed as SwitchChannel.

Both the PacketChannel backplane and the packet-switching part of the SwitchChannel backplane:

■

Support LAN-switching technology.

■

Switch 3.4 million packets per second.

■

Provide a 2 Gigabit-per-second bus.

■

Are designed as a passive bus that contains no active components that can break down.

■

Occupy the third (upper) backplane slot of the CoreBuilder 5000 hub.

Slot Restrictions Per

Backplane

Ta b le 1 - 2

CoreBuilder 5000 Hub

17-Slot

SwitchModule Installation Per Backplane

Backplane Hub Type

PacketChannel (Part Number 30-0433)

SwitchChannel (Part Number 30-0430)

Some slot restrictions apply if the hub uses the SwitchChannel backplane or if the hub contains no backplane in the third backplane slot. Refer to Table 1-2 for information about ATM Backbone SwitchModule installation restrictions and operation.

3C96017C-AP 3C96017C-BP 3C96017CH-AP

3C96017C-AC 3C96017C-BC 3C96017CH-AC

SwitchModule Installation and Operation

Install ATM Backbone SwitchModule in any slot in the hub.

Install ATM Backbone SwitchModule in slots 1 through 8 or 13 through 17.

PacketChannel Backplane Description

1-9

Ta b le 1 - 2

CoreBuilder 5000 Hub

10-Slot

7-Slot

17-Slot, 10-Slot, or 7-Slot

* To verify the hub type, enter the DMM command SHOW HUB.

SwitchModule Installation Per Backplane (continued)

Backplane Hub Type

PacketChannel (Part Number 30-0432)

SwitchChannel (Part Number 30-0434)

PacketChannel (Part Number 30-0471)

No PacketChannel or SwitchChannel backplane

3C96010C-AP 3C96010C-BP 3C96010CH-AP

3C96010C-AC 3C96010C-BC 3C96010CH-AC

3C96007C-AP 3C96007C-BP 3C96007CH-AP

3C96017C-A 3C96017C-B 3C96010C-A 3C96010C-B 3C96007C-A 3C96007C-B

Refer to the

Operation Guide

CoreBuilder 5000 Integrated System Hub Installation and

for more information about CoreBuilder 5000 hub

backplanes.

SwitchModule Installation and Operation

Install ATM Backbone SwitchModule in any slot in the hub.

Install ATM Backbone SwitchModule in slots 1 through 8.

Install ATM Backbone SwitchModule in any slot in the hub.

Does not support ATM Backbone SwitchModule. Contact 3Com Technical Support for information on upgrading your CoreBuilder

5000 hub.

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Sample ATM Backbone SwitchModule Configurations

Basic Configuration

This section illustrates three basic configurations of the ATM Backbone SwitchModule:

■

Basic Configuration

■

Dual-Homing Configuration

■

Dual-Homing/Module Redundancy Configuration

Figure 1-4 illustrates the basic configuration of an ATM Backbone SwitchModule with only a primary ATM OC-3 card.

ATM Backbone SwitchModule

Primary ATM OC-3 LECs 1 to 64

Ethernet or FDDI SwitchModule

ELANs 1 to 64

ATM Switch

Figure 1-4

Example Base Configuration

See Chapter 2, LAN Emulation Overview, for a description of LAN Emulation components and operation.

Sample ATM Backbone SwitchModule Configurations

1-11

Dual-Homing

Configuration

Figure 1-5 illustrates the dual-homing configuration of an ATM Backbone SwitchModule with a redundant ATM OC-3 card.

ATM Backbone SwitchModule

Primary ATM OC-3 LECs 1 to 64

Redundant ATM OC-3

Ethernet or FDDI SwitchModule

ELANs 1 to 64

LECs 1 to 64

NNI

ATM Switch A

ELANs 1 to 64

ATM Switch B

Figure 1-5

Example Dual-Homing Configuration

If the loss of light, frame, or cell delineation is detected, the redundant ATM OC-3 card becomes active and the primary ATM OC-3 card is disabled.

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Dual-Homing/Module

Redundancy

Configuration

Figure 1-6 illustrates the dual-homing/module redundancy configuration of two ATM Backbone SwitchModules with redundant ATM OC-3 cards.

ATM Backbone SwitchModules

Ethernet or FDDI SwitchModule

Primary ATM OC-3 LECs 1 to 32

Redundant ATM OC-3 LECs 1 to 32

ELANs 1 to 64

Primary ATM OC-3 LECs 33 to 64

Redundant ATM OC-3 LECs 33 to 64

NNI

ATM Switch A

Figure 1-6

Example Dual-Homing/Module Redundancy Configuration

ATM Switch B

The LECs in the example configuration of Figure 1-6 can be manually distributed between the two ATM Backbone SwitchModules in any combination.

Sample ATM Backbone SwitchModule Configurations

The features of the dual-homing/module redundancy configuration include:

■

Load balancing

LEC support is distributed manually across two ATM Backbone SwitchModules

■

ATM PHY redundancy

On either ATM Backbone SwitchModule, if the loss of any critical function is detected, the redundant ATM OC-3 card becomes active and the primary ATM OC-3 card is disabled.

■

Module redundancy

Using spanning tree parameters, one ATM Backbone SwitchModule assumes the LEC support of the other ATM Backbone SwitchModule if the other ATM Backbone SwitchModule fails.

1-13

Refer to the

CoreBuilder 5000 SwitchModule User Guide

for information on Spanning Tree parameters and configuration information.

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LAN E

This chapter describes the LAN emulation technology that provides an interface between Ethernet and FDDI packet-based networks and ATM cell-based networks.

This chapter contains the following sections:

■

General Definition of LAN Emulation

■

LAN Emulation Components

■

LAN Emulation Data Exchange

■

LAN Emulation Connections

■

LAN Emulation Operation

This chapter provides a general overview of fundamental LAN emulation concepts and terminology. For more detailed information on LAN emulation, refer to ATM Forum specifications LANE 1.0.

MULATION

VERVIEW

General Definition of LAN Emulation

LAN Emulation (LANE) provides an interface between traditional LANs and ATM networks. LAN emulation is defined by ATM specifications LANE 1.0.

An ATM emulated LAN conforms to IEEE 802.3 for Ethernet LANs.

The use of LAN emulation bridge allows you to use a high-speed ATM backbone to connect existing (legacy) Ethernet LANs. Figure 2-1 illustrates the basic function of LAN emulation.

2-2

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2: LAN E

MULATION OVERVIEW

LAN emulation (LANE) bridges

Legacy LAN

Figure 2-1

LAN Emulation Function

ATM backbone network

Legacy LAN

The ATM Backbone SwitchModule provides a LAN emulation bridge between an ATM network and a standard Ethernet-based SwitchModule (Figure 2-2).

SwitchModule

Figure 2-2

Virtual Bridge

(vbridge)

ATM Backbone SwitchModule Function

ATM

Backbone

SwitchModule

ATM

network

Emulated LAN

(ELAN )

The ATM Backbone SwitchModule accepts Ethernet and FDDI source packets from the SwitchModule over the CoreBuilder 5000 PacketChannel backplane and converts the packets to ATM cells for forwarding to the ATM backbone.

Conversely, ATM cells received by the ATM Backbone SwitchModule from the ATM backbone are converted to Ethernet packets and sent over the CoreBuilder 5000 PacketChannel backplane to the destination SwitchModule.

LAN Emulation Components

2-3

LAN Emulation Components

General LANE

Components

Legacy LANs

This section identifies:

■

General LANE Components

■

ATM Backbone SwitchModule LANE Components

The major components of ATM LAN emulation are identified in Figure 2-3.

ATM network

LAN emulation

bridge with one

or more LAN

emulation

clients (LECs)

Figure 2-3

General LAN Emulation Components

LAN Emulation

Configuration Server (LECS)

LAN Emulation

Server (LES)

Broadcast and Unknown

Server (BUS)

LAN Emulation

Client (LEC)

Each of the major LAN emulation components are defined here.

LAN Emulation Client (LEC)

The LAN Emulation Client is the entity in an end system that performs data forwarding, address resolution, and other control functions for a single end-system within a single ELAN. Each LEC is identified by a unique ATM address and is assigned to an ELAN in the ATM network.

LAN Emulation Configuration Server (LECS)

The LAN Emulation Configuration Server assigns individual LECs to a particular emulated LAN (ELAN) by directing them to the LAN emulation server that corresponds to the ELAN.

LAN Emulation Server (LES)

The LAN Emulation Server implements the control functions for a particular ELAN. There is only one logical LES for each ELAN. A LEC that belongs to a particular ELAN is controlled by the LES for the ELAN.

2-4

HAPTER

2: LAN E

MULATION OVERVIEW

Broadcast and Unknown Server (BUS)

The Broadcast and Unknown Server is a multicast server that forwards multicast and broadcast traffic to LECs within a specific ELAN. The BUS also floods unknown unicast traffic to all LECs in the ELAN.

ATM Backbone

SwitchModule LANE

Components

Implementation of the LAN emulation components in the ATM Backbone SwitchModule is illustrated in Figure 2-4.

ATM Backbone SwitchModule

Ethernet or FDDI SwitchModule

Virtual bridge (Vbridge)

Figure 2-4

Bridgeport-LEC (up to 64)

ATM Backbone SwitchModule LANE Components

ATM OC-3 card

ATM network

LANE service

Emulated LAN (ELAN)

In addition to the standard LANE service components (see Figure 2-3), the ATM Backbone SwitchModule includes the following components:

Bridgeport-LEC

You define up to 64 bridgeport-LECs for each ATM Backbone SwitchModule. A bridgeport-LEC is both a standard ATM LEC that you assign to an emulated LAN and a bridgeport that you assign to a virtual bridge.

LAN Emulation Data Exchange

2-5

Virtual Bridge (vbridge)

You create virtual bridges on CoreBuilder 5000 SwitchModules. You assign each bridgeport-LEC to a vbridge on a SwitchModule in the CoreBuilder 5000 hub.

Emulated LAN (ELAN)

You assign each bridgeport-LEC to an ELAN in the ATM network. An ELAN is a logical LAN grouping of LECs within an ATM network.

LAN Emulation Data Exchange

Protocol Stacks

Existing applications

Network interface driver

LAN emulation

AAL5

ATM

This section identifies important characteristics of data exchange between a SwitchModule and an ATM network.

The LAN emulation protocol stacks used in the exchange of data between a SwitchModule-based LAN and ATM host are shown in Figure 2-5.

ATM sw i tchATM hos t

and Ethernet SwitchModule

Bridging

LAN emulation

MAC

ATM

AAL5

ATM

Ethernet/FDDI hostATM Backbone SwitchModule

Existing applications

Network interface driver

MAC

Physical layer

Physical Physical

Figure 2-5

LAN Emulation Protocol Stacks

Physical

Physical layerPhysical

2-6

HAPTER

2: LAN E

MULATION OVERVIEW

Packets Versus Cells

Padding and error correction

Segmentation/ Reassembly

Cells

The ATM Backbone SwitchModule converts Ethernet- and FDDI-originated packets to and from ATM cells.

Figure 2-6 illustrates the conversion of SwitchModule packets to and from ATM cells.

SwitchModule packet

48 Octets

53 Octets

Figure 2-6

48 Octets

HDRHDR

53 Octets

HDR = ATM Cell Header (5 octets)

HDR

Converting SwitchModule Packets to and from ATM Cells

48 Octets

53 Octets

From ATM

To AT M

LAN Emulation Connections

2-7

LAN Emulation Connections

Control VCCs

LAN emulation uses VCCs (virtual channel connections) to provide communications between a LEC and the LANE service.

There are two types of VCCs:

■

Control VCCs

■

Data VCCs

Control VCCs consist of the following three types:

■

Configuration Direct VCC

— A bidirectional point-to-point VCC

from the LEC to the LECS

■

Control Direct VCC

■

Control Distribute VCC

— A bidirectional VCC from the LEC to the LES

— A unidirectional VCC from the LES to the LEC; typically, a point-to-multipoint connection from the LES to multiple LECs

Figure 2-7 illustrates the function of the three types of Control VCCs in ATM Backbone SwitchModule LAN emulation.

ATM Backbone SwitchModule

LAN Emulation Server (LES)

Control Direct VCC

LAN Emulation Configuration Server (LECS)

Figure 2-7

Control Distribute VCC

Configuration Direct VCC

BridgeportLEC

Control VCCs in ATM Backbone SwitchModule LAN Emulation

2-8

HAPTER

2: LAN E

MULATION OVERVIEW

Data VCCs

Data VCCs consist of the following three types:

■

Data Direct VCC —

A bidirectional point-to-point VCC set up

between two LECs that want to exchange data

■

Multicast Send VCC

— A bidirectional point-to-point VCC between

the LEC and the BUS

■

Multicast Forward VCC

— A unidirectional VCC from the BUS to the LEC; typically, a point-to-multipoint connection from the BUS to multiple LECs

Figure 2-8 illustrates the function of the three basic types of Data VCCs in ATM Backbone SwitchModule LAN emulation.

ATM Backbone

Broadcast and Unknown Server (BUS)

Multicast Forward VCC

ATM LE C

Multicast Send VCC

Data Direct VCC

SwitchModule

BridgeportLEC

Figure 2-8

Data VCCs in ATM Backbone SwitchModule LAN Emulation

LAN Emulation Operation

2-9

LAN Emulation Operation

Initialization

This section describes the simplified operation of a LEC in a LAN emulation configuration. LEC operation is defined by the protocols of the LAN Emulation User-Network Interface (LUNI).

LUNI protocol defines each stage of operation for a LEC. The major stages of operation, defined in this section, are:

■

Initialization

■

LECS Connection

■

Configuration

■

Joining

■

BUS Connection

■

Data Movement

In the initial state, the LEC configuration is initialized from nonvolatile storage or set to default values.

The next stage of LEC operation depends on the LANE configuration mode of the LEC:

■

Manual configuration mode

— The LEC proceeds directly to the

Joining stage and uses a locally configured LES ATM address.

■

Automatic configuration mode

— The LEC proceeds to the LECS Connection stage and attempts to contact the LECS to obtain its configuration, including ELAN/LES assignment.

2-10

HAPTER

2: LAN E

MULATION OVERVIEW

LECS Connection

Configuration

The LEC must determine the ATM address of its LECS and establish a connection to the LECS. The LEC attempts each of the following methods, in the order provided, to connect to its LECS:

Uses a locally configured LECS ATM address.

Queries the ILMI Service Registry MIB of the attached ATM switch for

one or more LECS ATM addresses.

Uses a predefined “well-known” LECS ATM address.

The use of another LANE 1.0 method of LECS connection, a PVC (Permanent Virtual Circuit) connection over VPI/VCI 0/17 (Virtual Path Identifier/Virtual Circuit Identifier), is not supported by the ATM Backbone SwitchModule.

The LEC proceeds to the Configuration stage when it establishes a connection to the LECS.

During the configuration stage, the LEC:

Sends a Configuration Request, containing identifying information

about itself, to the LECS.

Receives a Configuration Response from the LECS containing the ATM

address of the LES to which the LEC is assigned, as well as emulated LAN parameters such as ELAN type, frame size, and ELAN name.

Joining

During the Joining stage, the LEC:

Connects to the LES and sends a Join Request containing LANE

parameter settings that were locally configured (manual mode) or obtained from the LECS (automatic mode).

Receives a Join Response from the LES indicating whether the LEC is

accepted onto the emulated LAN controlled by that LES.

LAN Emulation Operation

2-11

BUS Connection

Data Movement

During the BUS Connection stage, the LEC:

Sends an LE-ARP (LAN Emulation-Address Resolution Protocol) request

to the LES containing the target MAC address FF-FF-FF-FF-FF-FF (broadcast MAC address).

The LES returns an LE-ARP response containing the ATM address of the emulated LAN’s BUS.

Establishes connections to the BUS for transmitting and receiving

multicast and unknown unicast traffic.

In the Data Movement stage, the LEC:

■

Sends and receives multicast MAC frames over the connections to the BUS.

■

Sends and receives unknown unicast MAC frames (unicast MAC frames for which the corresponding ATM address on the emulated LAN is unknown) over the connections to the BUS. At the same time, the LEC conducts an LE-ARP exchange to associate the MAC address with the ATM address of another station on the emulated LAN.

■

After a MAC/ATM address binding is resolved using LE-ARP, establishes a Data Direct VCC to that ATM address. After the Data Direct VCC is set up between two LECs, a Flush request is sent via the bus to signal to the receiving LEC to stop sending Data via the bus and to start sending data over the established Data Direct VCC. The receiving LEC responds with a Flush response via the bus to clear the bus channel. Any unicast frames received from the ATM address from the time the LEC sends out the Flush request until the time it receives the Flush response are buffered. The buffered frames are sent out over Data Direct VCC after the LEC receives the Flush command instead of over the bus.

■

Disconnects a Data Direct VCC that remains idle for a specified timeout period.

2-12

HAPTER

2: LAN E

MULATION OVERVIEW

ONFIGURING THE

ATM

Configuration Tools

ACKBONE

This chapter provides procedures for configuring the CoreBuilder®5000 ATM Backbone SwitchModule.

This chapter contains the following sections:

■

Configuration Tools

■

Setting Up DMM Access

■

Configuration Process Overview

■

Configuring LAN Emulation Parameters

■

Configuring ATM OC-3 Card Redundancy

■

Configuring IGMP Snooping Parameters

This section identifies the management tools that are available for you to manage CoreBuilder 5000 ATM Backbone SwitchModules. ATM Backbone SwitchModule configuration tools include:

WITCH

ODULE

■

3Com CoreBuilder 5000 Distributed Management Module (DMM) (includes Advanced DMM)

■

Advanced Management Tools

3-2

HAPTER

3: C

ONFIGURING THE

ATM B

ACKBONE SWITCHMODULE

Distributed

Management Module

Advanced

Management Tools

The CoreBuilder 5000 Distributed Management Module (DMM) and Advanced DMM (ADMM) provide commands that allow you to configure and monitor the ATM Backbone SwitchModule.

The ATM Backbone SwitchModule requires DMM/ADMM Version v5.20 or later.

DMM access to the ATM Backbone SwitchModule is obtained in either of two ways:

■

Connect a terminal directly to the console port of the DMM

■

TELNET to the IP address of the DMM from which the ATM Backbone SwitchModule is accessible

Refer to Setting Up DMM Access later in this chapter for more information.

This section identifies the advanced management tools that are available for managing CoreBuilder 5000 ATM Backbone SwitchModules, including:

■

Transcend Network Control Services for UNIX

■

Transcend Network Management Software for Windows

■

Third-Party SNMP-Based Tools

Transcend Network Control Services for UNIX

3Com Transcend

Network Control Services for UNIX provides a suite of advanced graphical tools for network management. Figure 3-1 illustrates the Transcend UNIX graphical tools you can use to configure CoreBuilder 5000 ATM Backbone SwitchModules.

Configuration Tools

3-3

Operating systems

Network management platforms

3Com management application

Tools accessible from network management platform Tools menu

Figure 3-1

UNIX Tools for Configuring ATM Backbone SwitchModules

Transcend Network Control Services for UNIX applications are accessed by:

■

Selecting the application directly from the Tools menu of the network platform (for example, HP OpenView)

■

Selecting a launch point from one application to another

You can access VLAN Manager from the network platform Tools menu only.

HP OpenView, SunNet Manager

Transcend® Network Control Services for UNIX

CoreBuilder® 5000

Manage r

Alternative launch point

SunOS, Solaris, HP

Devi ce

View

Manage men t

Alternative launc h poin

Bridge

VLAN

Manage r

Transcend Network Management Software for Windows

3Com Transcend Network Management Software for Windows provides a suite of advanced graphical tools for network management. Figure 3-2 illustrates the Transcend Windows tools that you can use to configure CoreBuilder 5000 ATM Backbone SwitchModules.

3-4

HAPTER

3: C

ONFIGURING THE

ATM B

ACKBONE SWITCHMODULE

Opera ting sys tems

Network management platforms

3Com ma nagem ent application

Tools accessible from n et work ma nage men t platform Tools menu

Devi ce V iew (embed ded)

Figure 3-2

Windows Tools for Configuring ATM Backbone SwitchModules

Transcend® Network Management Software for Windows

CoreBu ild er® 5000

Manager

Windows 95, Win dows NT

HP Op enVi ew f or W in dows

Bridge

Mana ge me nt

Alternative launch poi nt

Transcend Network Management Software for Windows applications are accessed by:

■

Selecting the application directly from the Tools menu of the Network Platform (for example, HP OpenView)

VLAN

Manager

■

Selecting a launch point from one application to another

You can access VLAN Manager from the Windows NT Tools menu only.

Third-Party SNMP-Based Tools

After you set up the DMM access, you can use any SNMP network manager for management (if the Management Information Base (MIB) is correctly installed on your network management station).

To manage the ATM Backbone SwitchModule with a network manager purchased from another vendor, verify that you have the correct MIB. Contact your network supplier for advice.

Setting Up DMM Access

3-5

Setting Up DMM Access

Setting Up Direct

Terminal Access to

the DMM

Configuring TELNET

Access to the DMM

This section provides procedures you must follow to set up access to DMM management tools.

You can access the DMM by:

■

Direct terminal access

■

TELNET access

Refer to the

Guide

for procedures to set up a direct terminal connection to the

CoreBuilder 5000 Distributed Management Module User

DMM.

You can configure in-band access to the DMM, which allows you to manage the CoreBuilder 5000 hub from a remote terminal or SNMP manager such as the 3Com Transcend Network Control Services application.

The CoreBuilder 5000 SwitchModules have embedded network connectivity to the DMM across the hub management channel.

Be sure that TELNET Access to the DMM is established through the CoreBuilder 5000 SwitchModule or another module in the hub.

For procedures on setting up Telnet access to the DMM, see the

CoreBuilder 5000 SwitchModule User Guide

3-6

HAPTER

3: C

ONFIGURING THE

ATM B

ACKBONE SWITCHMODULE

Configuration Process Overview

Configuration

Components

This section provides an overview of the following configuration information:

■

Configuration Components

■

Configuration Defaults

ATM Backbone SwitchModule configuration consists of three main components, described in the following sections:

LAN Emulation Configuration

Defines up to 64 LECs (LAN Emulation Clients) and assigns each to a unique ELAN. LEC configuration also involves defining various ELAN parameters for created LECs.

Initial LEC configuration requirements are specified in Configuring LAN Emulation Parameters later in this document.

Bridge Configuration

After it is created, a LEC must be assigned to an existing SwitchModule vbridge and can be configured as a normal SwitchModule bridge port, except that the SwitchModule never elects a bridgeport-LEC as master bridge port.

See the

CoreBuilder 5000 SwitchModule User Guide

information on master bridge ports

for more

Initial bridge configuration requirements are specified in Configuring LAN Emulation Parameters later in this chapter. For a complete list of configurable bridging parameters, see the

SwitchModule User Guide

CoreBuilder 5000

ATM Configuration

Configuration Process Overview

3-7

CAUTION:

Changes to the ATM parameters can cause problems with system operation. Only qualified ATM service personnel should attempt to modify these parameters. We recommend that you do not attempt to change these parameters.

Various ATM parameters are available to control ATM operating characteristics but, with the exception of the UNI Version parameter, ATM parameters typically do not require modification.

The default UNI Version of the ATM Backbone SwitchModule is 3.0. If necessary, use the following command to change the UNI Version to match that of the ATM switch:

CB5000> set atm slot uni_version version

The valid UNI Version settings are:

■

3_0

■

3_1

See the following for more information on ATM configuration:

■

ATM Backbone SwitchModule Command Reference for

ATM - re late d

DMM commands and parameters

■

DMM Commands Guide

for commands and examples

Configuration

Defaults

■

ATM Forum specifications UNI 3.0/3.1 and LANE 1.0

After installing the ATM, the following default configuration parameters are in effect:

■

The number of LECs on the module is set to 8.

■

LE_ARP Quiet Time is set to 5 seconds.

■

UNI version is set to 3_0.

■

LEC 1 is set to the following parameter values:

Configuration mode is Automatic.

■

Interface mode is Enabled.

■

ELAN Name is Admin.

■

Vbridge assignment is vbridge_1.

■

3-8

HAPTER

3: C

ONFIGURING THE

ATM B

ACKBONE SWITCHMODULE

■

LECs 2 through 8 are set to the following parameter values:

Configuration mode is Manual.

■

Interface mode is Disabled.

■

ELAN Name is None.

■

Vbridge assignment is Unassigned.

■

Configuring LAN Emulation Parameters

Automatic

Bridgeport-LEC

Configuration

Mode

Manual

Bridgeport-LEC

Configuration

Mode

The procedure you use to configure the LAN Emulation parameters for a LAN Emulation Client depends on whether the LEC is configured for automatic or manual configuration.

By default, the configuration mode of LEC 1 of the ATM Backbone SwitchModule is set to Automatic. Upon initial power-on, a LEC that is set to Automatic configuration mode attempts to establish connection with the LECS according to established autoconfiguration guidelines. Refer to Chapter 2, LAN Emulation Overview, for more information.

After the automatic bridgeport-LEC configuration is complete, you must assign the LEC to a vbridge. Only one bridgeport LEC from the same ATM Backbone SwitchModule may be assigned to each virtual bridge. In this example, LEC 1 of a ATM Backbone SwitchModule in slot 4 is assigned to vbridge 2:

CB5000 > set bridge_port 4.1 vbridge 2

Before the LEC can exchange data, a bridgeport on the Ethernet or FDDI SwitchModule must also be assigned to the vbridge.

If the module cannot successfully autoconfigure, use the following procedure to manually configure the required initial parameters.

Configure initial ATM Backbone SwitchModule parameters using the

commands in the following example (configuring LEC 1 on a module in slot 4):

CB5000 >set bport_lec 4.1 mode disable CB5000>set bridge_port 4.1 vbridge 2 CB5000>set bport_lec 4.1 config_mode manual CB5000>set bport_lec 4.1 les_atm_address <address> CB5000>set bport_lec 4.1 elan_name <name> CB5000 >set bport_lec 4.1 mode enable

(may not be required)

Configuring ATM OC-3 Card Redundancy

Save the settings as follows:

CB5000 > save all

Repeat steps 1 and 2 for each LEC you require.

Assign a unique LES address for each bridgeport LEC on the same

module. If a bridgeport LEC has an address configured that is a duplicate of another bridgeport LEC, it never joins the ELAN.

For a complete list of optional DMM LAN Emulation commands and parameters, see the

Reference

. For descriptions and examples of the LAN Emulation

commands, refer to the

ATM Backbone SwitchModule Command

DMM Commands Guide

3-9

Verifying

Bridgeport-LEC

Status

Configuring ATM OC-3 Card Redundancy

After Automatic or Manual LEC configuration, use the SHOW BPORT_LEC STATUS command to verify that the bridgeport-LEC is successfully joined to the intended ELAN.

If you install a second ATM OC-3 card on your ATM Backbone SwitchModule, use the following procedure to configure the module for ATM OC-3 card redundancy:

Use the following command to designate one of the two ATM OC-3

cards as the active ATM OC-3 card.

CB5000 > set mo dule <slot>.1 phy_selection <1 or 2>

The ATM OC-3 card near the top of the ATM Backbone SwitchModule is 1. The lower ATM OC-3 card is 2.

The ATM OC-3 card you do not make active becomes the redundant ATM O C- 3 c ard.

Use the following command to enable the ATM Backbone

SwitchModule to automatically make the redundant ATM OC-3 card active if the primary ATM OC-3 card fails (or performance degrades significantly):

CB5000 > set module <slot> .1 phy_autom atic_failover enable

If you disable automatic failover and a primary ATM OC-3 card failure occurs, you must use the command in step 1 to make the redundant ATM OC-3 card active.

There is a configurable feature called the loss of signalling delay. The default is 0 seconds, and the maximum is 60 seconds. PHY failover can take from 0 through 60 seconds when the automatic failover feature is enabled. The command is:

CB5000 > set atm <slot>.1 loss_of_si gnalling_dela y <seconds>

Configuring IGMP Snooping Parameters

IGMP snooping must be enabled on both the ATM backbone SwitchModule and the vbridge on which you plan to use IGMP snooping.

To enable IGMP snooping on the ATM Backbone SwitchModule:

Before you can enable IGMP snooping, you must set up an IP address for each vbridge that is configured on the ATM Backbone SwitchModule. You must setup a subnet mask before you can assign an IP address. The correct commands are:

SET IP SUBNET_MASK <FF.FF.FF>.00 VBRIDGE 1

SET IP IP_ADDRESS <XXX.XXX.XX>.00 VBRIDGE 1

SAVE ALL

SHOW IP

Enable IGMP snooping on the ATM Backbone SwitchModule.

(This saves the address parameters for vbridge 1.)

(This displays the IP address you just created for vbridge 1.)

For example, the following command enables IGMP snooping on an ATM Backbone SwitchModule in slot 9:

CB5000 > set module 9.1 igmp_snoop ing enable

Enable IGMP snooping on a vbridge configured on the ATM Backbone

SwitchModule.

For example, the following command enables IGMP snooping on vbridge 1 on the ATM Backbone SwitchModule in slot 9:

CB5000 > set vbridge 1 igmp_snooping mode enable

Configuring IGMP Snooping Parameters

View the status of IGMP snooping on a vbridge configured on the ATM

backbone SwitchModule.

For example, the following command displays the status of IGMP snooping on vbridge 1 on the ATM Backbone SwitchModule in slot 9:

CB5000 > show vbridge 1 igmp _snooping status

Save the parameter changes you made.

For example, the following command saves the parameter changes you made to the ATM Backbone SwitchModule in slot 9:

CB5000 > save all

This command only saves the parameter changes in RAM. To actually effect the changes on the ATM Backbone SwitchModule, you must reset the module.

Reset the ATM Backbone SwitchModule to enable IGMP snooping on

the SwitchModule and the vbridge.

For example, the following command resets the ATM Backbone SwitchModule in slot 9, thus enabling IGMP snooping on the SwitchModule and vbridge 1:

CB5000 > reset module 9.1

3-11

CAUTION:

Do not use the

RESET HUB

command in this instance.

Parameters saved in NVRam may not get updated if you use the

command. Use only the

HUB

RESET MODULE

command in this

instance.

RESET

3-12

HAPTER

3: C

ONFIGURING THE

ATM B

ACKBONE SWITCHMODULE

TATUS

ONITORING AND

Using DMM/ADMM Commands

TATISTICS

This chapter describes the tools that you can use to monitor module status and gather statistics that help you to analyze the CoreBuilder performance.

This chapter contains the following sections:

■

Using DMM/ADMM Commands

■

Using Graphical Interface Tools

You can use the following DMM/ADMM commands to display configuration and status information about the ATM Backbone SwitchModule and its ports.

■

SHOW VBRIDGE

■

SHOW MODULE

5000 ATM Backbone SwitchModule and network

■

SHOW BRIDGE_PORT

■

SHOW COUNTER BRIDGE_PORT

■

SHOW ATM

■

SHOW BPORT_LEC

■

SHOW SONET

■

SHOW IGMP SNOOPING

See the

Reference

a full list of parameters for each command.

CoreBuilder 5000 ATM Backbone SwitchModule Command

for a complete list of available DMM/ADMM commands and

4-2

HAPTER

4: S

TATUS MONITORING AND STATISTICS

SHOW VBRIDGE

Use the SHOW VBRIDGE command to display the following vbridge configuration information about the ATM Backbone SwitchModule:

■

General vbridge configuration information

■

Detailed vbridge configuration information

■

IGMP snooping information on a vbridge

Displaying General Vbridge Configuration Information

The following command shows general vbridge configuration information about an ATM Backbone SwitchModule in a CoreBuilder 5000 hub:

You do not have to enter no_verbose to see the general information.

CB5000>

VBridge Bridge Identifier Ports Spanning Tree General Information

-------- ----------------------- --- ---- ------- ------ --- ------------- --1 80-00-08-00-8f-20-e5-f8 41 ENABLED vbridge_1 2 80-00-08-00-8f-11-c5-fa 2 ENABLED vbr idge_2 (r oot) 11 80-00-08-00-8f-11-2e-1b 3 ENABLED vbridge_11 (root)

show vbridge all configuration no_verbose

Using DMM/ADMM Commands

4-3

Displaying Detailed Vbridge Configuration Information

The following command shows detailed vbridge configuration information about an ATM Backbone SwitchModule in a CoreBuilder 5000 hub:

CB5000 > show vbridge all configuration verbose

Interface Number: 4 Interface Mode: ENABLED Aging Time: 300 Learned Entry Discards: 0 Spanning Tree Priority: 32768 Spanning Tree Bridge Max Age: 20.00 Spanning Tree Bridge Forward Delay: 15.00 Spanning Tree Bridge Hello Time: 2.00 Spanning Tree Hold Time: 1.00 Spanning Tree Max Age: 20.00 Spanning Tree Hello Time: 2.00 Spanning Tree Forward Delay: 15.00 Designated Root: 80-00-00-02-9c-06-3b-40 Root Cost: 102 Root Port: 289 Topology Changes: 302 Time Since Topology Changed: 1358.83 IGMP Snooping Mode: ENABLED

4-4

HAPTER

4: S

TATUS MONITORING AND STATISTICS

Displaying IGMP Snooping Vbridge Information

The following command shows IGMP snooping status information for vbridge 11 configured on an ATM Backbone SwitchModule installed in the hub:

CB5000 > show v bridge 11 igmp_snooping status

IGMP Snooping Status of VBridge 11

-----------------------------------------------------------IGMP Snooping ENABLED IGMP Querying ENABLED Port Aging Time (seconds) 300 Querier IP Address 0.0.0.0 Querier State DISABLED Querier Listen Time (seconds) 120 Querier Interval 60 Sent Query Packets 0 Group Aging Time (seconds) 300

Table 4-1 lists the other options you can use with the SHOW VBRIDGE <VBRIDGE_NUMBER> IGMP_SNOOPING that appears:

command and the information

Ta b le 4 - 1

Option Information Shown

bridge_port IGMP snooping bridge port information for the vbridge

mac IGMP snooping mac address information for the

ip IGMP snooping IP address information for the vbridge

router_ports IGMP snooping router ports information for the vbridge

Other Vbridge IGMP Snooping Options

vbridge <number>

Using DMM/ADMM Commands

4-5

SHOW MODULE

Use the SHOW MODULE command to display module-level information about the ATM Backbone SwitchModule.

The following command shows detailed module information about an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show module 4.1 verbose

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- -------------------

04.01 6602M-MOD 3.0 N/A

6602M-MOD: ATM Backbone SwitchModule

Boot Version: v2.05 RMON Analyzer: NONE CPU RAM Size (Mb): 8 FLASH Memory (Mb): 4 Packet Memory (Mb): 16 Shared Memory (Mb): 2 Descriptor Memory (Mb): 1 SAR Control Memory (Kb): 64 Address Cache Entries: 1024 PHY Configuration Select: 2 PHY Current Select: 2 PHY Automatic Failover: ENABLED IGMP Snooping: ENABLED

4-6

HAPTER

4: S

TATUS MONITORING AND STATISTICS

SHOW BRIDGE_PORT

Use the SHOW BRIDGE_PORT command to display:

■

General status information for all bridge ports on the module

■

Detailed information about one bridge port on the module

Displaying General Status Information

The following command displays information about all defined bridge ports (LECs) on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000> show bridge_port 4.all

Bridge Port Display for Module 6602M-MOD:

BPort I/F Status St p State Vbri dge Logical General In fo

----- ------- --- -- ------- ------ -- ------- -- ----------

04.01 ENABLED FORWARDING 11 73

04.02 ENABLED BLOCKED 1 73

04.03 DISABLE D DISABLED UNAS SGN 73

04.04 DISABLE D DISABLED UNAS SGN 73

04.05 DISABLE D DISABLED UNAS SGN 73

04.06 DISABLE D DISABLED UNASSGN 73

Using DMM/ADMM Commands

4-7

Displaying Detailed Information

The following command displays information about bridge port 2 on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000> sh ow bridge_port 4.2 verbose

Bridge Port Display for Module 6602M-MOD:

BPort I/F Status St p State Vbri dge Logical General In fo

----- --------- - -- ------- ------ -- ------- ----- -------

04.02 ENABLED BLOCKED 1 73

MAC Address: 08-00-8f-40-a5-41 Port Name: Bridge Port STP Mode: NORMAL Interface Mode: ENABLED Spanning Tree Priority: 128 Spanning Tree Path Cost: 6 Spanning Tree Forward Transitions:0 Designated Root: 80-00-00-02-9c-06-3b-40 Designated Cost: 102 Designated Bridge: 80-00-08-00-8f-13-e0-d3 Designated Port: 80-79 RMON Monitor Supported: NOT_SUPPORTED

RMON Monitor Source: DISABLED

4-8

HAPTER

4: S

TATUS MONITORING AND STATISTICS

SHOW COUNTER

BRIDGE_PORT

Use the SHOW COUNTER BRIDGE_PORT command to display statistics for a bridge port on the module.

The following command displays statistics about bridge port 2 on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000> show counter bridge_port 4.2 interface

Interface Statistics for Module 6602M-MOD Bridge Port 4.2

------------------------------------------------------------Bridge Received Frames 551932 Bridge Received Discards 0 Bridge Transmitted Frames 1 Bridge Delay Exceeded Discards 0 Received Octets 403424960 Received Unicast Packets 551 942 Received Non-Unicast Packets 551 932 Received Discards 23 Received Errors 0 Received Unknown Protocols 0 Transmitted Octets 498 Transmitted Unicast Packets 4 Transmitted Non-Unicast Packets 1 Transmitted Errors 0 % Non-Unicast Packets 50.0% % Utilization 0.0% % Error Frames 0.0%

The following command displays IGMP snooping statistics about bridge port 2 on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show count bridge_port 4.2 igmp_snooping

IGMP Snooping Statistics for Module 6602M-MOD Bridge Port 4.2

------ ----------- ----------- ---------- ----------- ----------Transmitted Report Packets 0 Transmitted Query Packets 0 Transmitted Join Packets 0 Transmitted Leave Packets 0

Received Report Packets 0 Received Query Packets 0 Received Join Packets 0 Received Leave Packets 0

Using DMM/ADMM Commands

4-9

SHOW ATM

ATM Interface

Parameters

Use the SHOW ATM command to display the following ATM information:

■

ATM Interface Parameters

■

ATM ILMI Configuration

■

ATM Q93b Parameters

■

ATM QSAAL Parameters

■

ATM Signal Configuration

■

ATM Statistics

■

ATM Traffic Description

■

ATM VCCs

The following command displays information about ATM interface parameters for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show atm 4 interface

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Current Next Re set

---------- ---------- ---Max VCCs: 512 512 Active VPI/VCI Bits: 0/9 0/9 Number of LECs: 8 8 UNI Version: 3.0 3.0 LEARP Quiet Time (secs) 5 Loss of Signal Delay: 0 0 Neighbor IP Address: 192.83.237.19 Neighbor Interface Name: <none>

4-10

HAPTER

4: S

TATUS MONITORING AND STATISTICS

ATM ILM I

Configuration

ATM Q9 3b

Parameters

The following command displays information about the ATM ILMI configuration for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show atm 4 ilmi_configuration

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Current Ne xt Reset

---------- -------- ----ILMI PVC: 0/16 0/16 LMI Peak Cell Rate (%line rate): 5 5 LMI Sust Cell Rate (%line rate): 1 1 ILMI Burst Size (cells): 11 11 ILMI Request Timeout (secs): 5 5 ILMI Request Retries: 2 2

ILMI Admin Vbridge: 1 –

The following command displays information about ATM Q93b parameters for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show atm 4 q93b

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Current Ne xt Reset

---------- -------- ----T303 (secs): 4 4 T308 (secs): 30 30 T309 (secs): 90 90 T310 (secs): 10 10 T313 (secs): 4 4 T316 (secs): 120 120 T317 (secs): 60 60 T322 (secs): 4 4

Using DMM/ADMM Commands

4-11

ATM QSAA L

Parameters

ATM Signal

Configuration

The following command displays information about ATM QSAAL parameters for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show atm 4 qsaal

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Current Ne xt Reset

---------- -------- ----Poll Timer (msecs): 100 100 Keepalive Timer (secs): 1 1 No Response Timer (secs): 300 300 Idle Timer (secs): 15 15 CC Timer (secs): 2 2 Max CC Retries: 4 4 Max PD Retries: 25 25 Stat Max Ranges: 67 67

The following command displays information about the ATM signal configuration for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > sho w atm 4 signal_configuration

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Current Ne xt Reset

---------- -------- ----Sig PVC: 0/5 Sig Peak Cell Rate (% line rate):5 5 Sig Sust Cell Rate (% line rate):1 1 Sig Max Burst Size (cells): 11 11

4-12

HAPTER

4: S

TATUS MONITORING AND STATISTICS

ATM Stat i s ti cs

ATM Traff ic Description

The following command displays ATM statistics for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show atm 4 statistics

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

ATM AAL5

---------- ---------In Octets: 996327390 7092 47719 In Frames: 18798630 8030817 In Errors: 0 0 In Discards: 0 0 In Unknown Protocols: 0 0 Out Octets: 456665649 278670149 Out Frames: 8616333 4607911 Out Errors: 0 0 Out Discards: 0 0

The following command displays descriptive statistics for ATM traffic on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show atm 4 traffic_descriptor all

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Index Descr Type PeakCellRate SustCellRate MaxBurstSize

----- ----- ---------------------- -------------------------1 ILMI NoClpScr 17661 3533 11 2 SIG NoClpScr 17661 3533 11 3 155M NoClpNoScr 353208 0 0 4 100M NoClpNoScr 260417 0 0 5 50M NoClpNoScr 130208 0 0 6 25M NoClpNoScr 60377 0 0 7 8M NoClpNoScr 18120 0 0 8 6M NoClpNoScr 13590 0 0 9 2M NoClpNoScr 4530 0 0

Using DMM/ADMM Commands

4-13

ATM VC C s

CB5000> show atm 4 vcc all

Slot Module Version Network General Information

------ ---------- ------- --------- ------------------04 6602M-MOD 3.0 N/A

VCC Status TxDescr RxDescr Type TxSDU RxSDU Encap

------------- ------- ------- ------ ------ -------------------0/5 UP SIG N/A AAL5 500 500 OTHER 0/16 UP ILMI N/A AAL5 500 500 OTHER 0/105 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/106 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/107 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/108 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/109 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/110 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/111 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/112 UP 155M N/A AAL5 151 6 1516 LANE 8023 0/113 UP 155M N/A AAL5 151 6 1516 LANE 8023

SHOW BPORT_LEC

The following command displays information about ATM VCCs for an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

Use the SHOW BPORT_LEC command to display the following bridgeport-LEC information:

■

BPORT_LEC Configuration

■

BPORT_LEC Statistics

■

BPORT_LEC Status

■

BPORT_LEC Server Circuits

■

BPORT_LEC LE_ARP Table

4-14

HAPTER

4: S

TATUS MONITORING AND STATISTICS

BPORT_LEC

Configuration

The following command displays configuration information for bridgeport-LEC 2 on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > sho w bport_lec 4.2 configuration

Bridge Port LEC Display for Module 6602M-MOD:

BP LEC Mode I/F Status General Info

------ --- -- ---------- -------- ----- ---- ----------- ----

04.02 ENABLED ENABLED

Configuration Mode: MANUAL ELAN Name: cpsw_2 ELAN Type: UNSPECIFIED Maximum Data Frame Size: UNSPECIFIED LES ATM Address:

39.99.99.99.99.99.99.00.00.99.99.02.02.99.99.99.99.99.99.03 LECS ATM Address: <none> Aging Time (secs): 300 BUS Rate Limit (packets/secs): 5000 Connection Complete Timer (secs): 4 Control Timeout (secs): 120 Expected ARP Response Time (secs): 1 Flush Timeout (secs): 4 Forward Delay Time (secs): 15 Maximum Retry Count: 1 Maximum Unknown Frame Count: 1 Maximum Unknown Frame Time (secs): 1 Number of ELAN VCCs: 512 Path Switching Delay (secs): 6 VCC Timeout Period (secs): 1200

Using DMM/ADMM Commands

4-15

BPORT_LEC Statistics

BPORT_LEC Status

The following command displays statistics for bridgeport-LEC 2 on an ATM Backbone SwitchModule in slot 4 of a CoreBuilder 5000 hub:

CB5000 > sho w bport_lec 4.2 statistics

Bridge Port LEC Display for Module 6602M-MOD:

BP LEC Mode I/F Status General Info

------ --- -- ---------- -------- ----- ---- ----------- ----

04.02 ENABLED ENABLED

LEARP Request Out: 1 LEARP Request In: 1 LEARP Replies Out: 0 LEARP Replies In: 1 Control Frames Out: 4 Control Frames In: 580907 SVC Failures: 0

The following command displays status information for bridgeport-LEC 2 on an ATM Backbone SwitchModule in slot 4:

CB5000 > sho w bport_lec 4.2 status

BP LEC Mode I/F Status General Info

------ --- -- ---------- -------- ----- ---- ----------- ----

04.02 ENABLED ENABLED

Actual ELAN Name: cpsw_2 Actual ELAN Type: AFLANE 8023 Actual Maximum Data Frame Size: 1516 LECS ATM Address: <none> LECS Address Source: DID NOT USE LECS Actual LES ATM Address:

39.99.99.99.99.99.99.00.00.99.99.02.02.99.99.99.99.99.99.03 LEC ID: 17 Link Trap: DISABLED Interface State: OPERATIONAL Last Failure Response Code: INSUFF RESOURCES Last Failure State: BUS CON NECT LANE Protocol: 1 LANE Version: 1 Topology Change: OFF Proxy Client: YES LEC ATM Address:

39.99.99.99.99.99.99.00.00.99.99.02.02.08.00.8f.40.a5.41.02

4-16

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4: S

TATUS MONITORING AND STATISTICS

BPORT_LEC Server

Circuits

BPORT_LEC

LE_ARP Table

CB5000> sh ow bport_lec 4. 2 learp_table all

Bridge Port LEC Display for Module 6602M-MOD:

BP LEC M ode I /F Status General Info

--------- --- --------- - ------------ ------- ------------

04.02 ENABLED ENABLED

The following command displays the server circuits for bridgeport-LEC 2 on an ATM Backbone SwitchModule in slot 4:

CB5000 > sho w bport_lec 4.2 server_circuits

Bridge Port LEC Display for Module 6602M-MOD:

BP LEC Mode I/F Status General Info

------ --- -- ---------- -------- ----- ---- ----------- ----

04.02 ENABLED ENABLED

Configuration Direct VPI/VCI: 0/ 0 Control Direct VPI/VCI: 0/105 Control Distribute VPI/VCI: 0/106 Multicast Send VPI/VCI: 0/107 Multicast Forward VPI/VCI: 0/108

The following command displays information for an ATM Backbone SwitchModule in slot 4:

MAC Address ATM Address

----------- - ------------- ---------08-01-20-05-05-e3 3 9.99.99.99.99 .99.99.00.00.99.99. 05.07.08.00.8f.40.a4.c0.02

Using DMM/ADMM Commands

4-17

SHOW SONET

SHOW SONET Status

Use the SHOW SONET command to display the following ATM SONET information:

■

SHOW SONET Status

■

SHOW SONET Statistics

The following displays SONET status information for an ATM Backbone SwitchModule in slot 13:

CB5000 > show sonet 13.1 status

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

Medium Type: SONET Medium Time Elapsed (sec): 665 Medium Valid Intervals: 13 Medium Line Coding: NRZ Medium Line Type: MULTI-MODE Medium Clock Source: EXTERNAL

Section Current Status: OKAY Line Current Status: OKAY Path Current Status: OKAY Path Current Width: STS3 C

M/S/L Speed (Mbps): 155520 000 M/S/L Admin Status: ENABLE D M/S/L Oper Status: UP M/S/L Last Change: 0

Path Speed (Mbps): 155520000 Path Admin Status: ENABLED Path Oper Status: UP Path Last Change: 0

4-18

HAPTER

4: S

TATUS MONITORING AND STATISTICS

SHOW SONET

Statistics

The following command displays SONET statistics for an ATM Backbone SwitchModule in slot 7:

CB5000 > sho w sonet 7.1 statis tics interval all

Slot Module Version Networ k Genera l Information

------ ------------ ------- --------- ------------------04 6602M-MOD 3.0 N/A

SECTION LINE PATH

--------------------------------------------------------------Int hh:mm ES SES SFS CV ES SES UAS CV ES SES UAS

--------------------------------------------------------------1 -00:15 0 0 0 0 0 0 0 0 0 0 0 2 -00:30 0 0 0 0 0 0 0 0 0 0 0 3 -00:45 0 0 0 0 0 0 0 0 0 0 0 4 -01:00 0 0 0 0 0 0 0 0 0 0 0 5 -01:15 0 0 0 0 0 0 0 0 0 0 0 6 -01:30 0 0 0 0 0 0 0 0 0 0 0 7 -01:45 0 0 0 0 0 0 0 0 0 0 0 8 -02:00 0 0 0 0 0 0 0 0 0 0 0 9 -02:15 0 0 0 0 0 0 0 0 0 0 0 10 -02:30 0 0 0 0 0 0 0 0 0 0 0 11-02:45 100 11000 0 000 0 12 -03:00 0 0 0 0 0 0 0 0 0 0 0 13 -03:15 0 0 0 0 0 0 0 0 0 0 0 14 -03:30 11 0 38 88 11 0 21 54 0 0 0

Using DMM/ADMM Commands

4-19

SHOW IGMP

SNOOPING

Use the SHOW IGMP SNOOPING command to display the IGMP snooping information on a module. You can view the IGMP snooping information on all of the modules installed in a CoreBuilder 5000 hub using the SHOW IGMP_SNOOPING MODULE ALL snooping information on a specific module using the

command or IGMP

SHOW

IGMP_SNOOPING MODULE <SLOT.SUBSLOT> command.

The following command shows IGMP snooping information about the ATM Backbone SwitchModule installed in slot 4 of a CoreBuilder 5000 hub:

CB5000 > show igmp_snooping module 4.1

IGMP Snooping Information

-----------------------------------------------------------IGMP Snooping is currently ENABLED. IGMP Snooping after Module Reboot is ENABLED.

Entry VBridge IGMP Mo de

-----------------------------------------------------------1 1 ENABLED 2 11 ENABLED

4-20

HAPTER

4: S

TATUS MONITORING AND STATISTICS

Using Graphical Interface Tools

CoreBuilder 5000

Manager

Tra ns ce nd® Network Control Services provides advanced graphical management capabilities that enable you to monitor ATM Backbone SwitchModule operation and collect and display statistics. Transcend Network Control Services graphical management tools include:

■

CoreBuilder 5000 Manager

■

Device Management for Hubs

■

VLAN Manager

■

LANE Manager

You can also use a third-party network management application for SNMP-based monitoring and analysis.

3Com CoreBuilder 5000 Manager uses the Simple Network Management Protocol (SNMP) to poll devices for status, configuration, and traffic information.

CoreBuilder 5000 Manager monitoring and display functions include:

■

Display of hub status

■

Display of module and port configuration and status

■

Display and logging of traffic statistics

■

Display and logging of alarm conditions and messages (traps)

The ATM Backbone SwitchModule supports the following MIBs:

■

MIB II – RFC 1213

■

Bridge MIB – RFC 1493

■

Interfaces MIB – RFC 1573

■

ATM MIB – RFC 1695

■

SONET MIB – RFC 1595

■

ATM Forum LEC MIB

■

IANAIFTYPE MIB

■

3Com ISD MIB

For specific information on displaying information and statistics using CoreBuilder 5000 Manager, refer to the CoreBuilder 5000 Manager documentation for the platform you are running (UNIX or Windows).

Using Graphical Interface Tools

4-21

Device Management

for Hubs

VLAN Manager

LANE Manager

Device Management for Hubs allows you to display the operating status of a selected device, configure the device, or display statistics.

When you launch Device Management for Hubs, an image of the selected device, known as

Device View

, appears. The Device View depicts the current configuration of the device. For example, ports displayed on the Device View are color-coded to indicate the current state of the port. By selecting various areas of the Device View and using menus, you can monitor and manage the objects represented by the selected area of the Device View.

VLAN Manager displays all local VLANs and ATM-based ELANs. You can move segments between VLANs and view a graphical description of the path between two segments within a VLAN.

LANE Manager discovers all 3Com-based LECS, LES, and LEC components in the network and shows you their interconnections.

4-22

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4: S

TATUS MONITORING AND STATISTICS

NTERNET

ROUP

ANAGEMENT

Overview

ROTOCOL

This chapter provides the following information about IGMP snooping:

■

Overview

■

CoreBuilder 5000 Support

■

Locating Multicast Routers in the Network

■

No Multicast Routers on the Network

■

Enabling IGMP Snooping on CoreBuilder 5000 SwitchModules

The Internet Group Management Protocol (IGMP) runs between hosts and their immediate neighboring multicast routers. This protocol is not a client/server protocol, but rather a routing protocol.

Through IGMP, a host to inform its local router that it wants to receive transmissions that are addressed to a specific multicast group. Also, routers periodically query the LAN to determine if known group members are still active.

(IGMP) S

NOOPING

Based on the group membership information learned from the IGMP, a router can determine which (if any) multicast traffic needs to be forwarded to each of its subnetworks. Multicast routers use this information in conjunction with a multicast routing protocol to support IP multicasting across the Internet. Layer 2 switches flood multicast packets to all ports without the presence of management specified filters.

5-2

HAPTER

5: I

NTERNET GROUP MANAGEMENT PROTOCOL

(IGMP) S

NOOPING

Disabling IGMP

snooping

Before

implementing IGMP

snooping

The default setting for IGMP snooping is enabled. To disable it, enter the SET VBRIDGE <X> IGMP_SNOOPING DISABLE command.

Before you implement IGMP snooping within your network, be aware of how the CoreBuilder

5000 SwitchModule and your software vendor’s multicast applications function with respect to IGMP. Inherently, all IGMP-compliant viewer applications on your network issue IGMP Membership Report packets (in response to IGMP Query Packets sent out from a local IGMP-compliant switch or router) requesting either to start or to continue sending the multicast stream to that port. However, some multicast applications do not send IGMP reports onto the network from the broadcasting server.

Depending on how your network is configured, broadcasters that do not send report packets onto the network can potentially cause excessive flooding for that vbridge or subnet. The CoreBuilder 5000 filters multicast traffic on a per-stream basis after receiving an IGMP report packet on the local vbridge or subnet. If IGMP report packets are never seen for a particular multicast session, that stream continues to flood within that vbridge or subnet. This situation may appear as if IGMP snooping is not functioning properly, when actually it is the limitation of the broadcasting application that fails to send IGMP Report packets to the querying switch or router on that subnet.

Placement of IGMP

servers

Placement of IGMP multicast servers that do not issue IGMP Report packets is critical to the proper functioning of IGMP snooping on the CoreBuilder 5000 product. If your IGMP Broadcasting application does not issue IGMP report packets, 3Com recommends that you either place at least one multicast client within the same subnet or vbridge as the IGMP multicast server or run the viewer software at the same time on the broadcasting server.

Overview

Figure 5-1 shows a typical packet path before snooping occurs.

Multicast Router

5-3

Host 1Host 3

Eliminating

unwanted IP

multicast protocols

Host 3 sends a Multicast Packet

Figure 5-1

CoreBuilder

Host 2

Multicast Packet Path before Snooping

5000 Hub

IGMP snooping switch and multicast MAC address filters work together to eliminate unwanted IP multicast routing protocols as follows:

■

The IGMP snooping switch filters IP multicast packets based on IGMP/IP and IP multicast packets to only the subset of ports that are in a multicast group.

■

The multicast MAC address filters

restrict

multicast packets to only the subset of ports that request this traffic, thus freeing up bandwidth for useful traffic.

5-4

HAPTER

5: I

NTERNET GROUP MANAGEMENT PROTOCOL

Figure 5-2 shows the format of a typical IGMP snooping version 1 message that is received after an IGMP snooping query in a multicast group has been completed.

0 3 4 7 8 15 16 31

4-bit IGMP Version

32-bit group address (Class D IP Address)

4-bit IGMP Type

8-bit Unused

(IGMP) S

16-bit checksum

NOOPING

Figure 5-2

Format of an IGMP Version 1 Message

When IGMP snooping is running on a CoreBuilder® 5000 hub, it allows multicast traffic to ports where:

■

IGMP Report packets for that multicast group have been observed.

■

Multicast routing protocols have been observed.

Figure 5-3 shows a typical multicast packet path after snooping has occurred.

Multicast Router

Host 1Host 3

Host 3 sends a Multicast Packet

Figure 5-3

Host 2

Multicast Packet Path after Snooping

CoreBuilder

5000 Hub

Overview

5-5

The result is that multicast traffic is flooded through a multicast group-specific subset of the switched fabric, namely that subset that contains either end stations that have joined the given multicast group, or multicast routers.

The location of multicast group members is determined by snooping on the IGMP/IP report packets sent from the hosts. This information is aged out and refreshed by hearing new reports. the location of the multicast routers can either be configured by management or be determined by snooping on protocols such as:

■

Protocol-Independent Multicast (PIM)

■

Multicast Open Shortest Path First (MOSPF)

■

Distance Vector Multicast Routing Protocol (DVMRP)

The CoreBuilder 5000 hub uses the following two types of IGMP packets to determine the flow of multicast data:

■

Queries

— Query packets (IGMP Type = 1) are flooded to all ports

in the vbridge.

■

Reports

— Report packets (IGMP Type = 2 and 6) are only sent to multicast router ports. They are not forwarded to other ports because they inhibit hosts on those ports from reporting their own membership in those groups. This results in overly restrictive filtering by the hub.

IGMP is a host-to-router protocol that assumes there is shared medium between both types of IGMP packets. Because of this assumption, when a host hears a report for a host group IP that wants to join, that host assumes that it does not need to send a report to receive this host group traffic. This occurs when the IGMP protocol is optimized to minimize the number of reports sent. This is not true for filtering switches that interconnect the multicast routers to hosts, however.

5-6

HAPTER

5: I

NTERNET GROUP MANAGEMENT PROTOCOL

(IGMP) S

NOOPING

CoreBuilder 5000 Support

Locating Multicast Routers in the Network

The CoreBuilder 5000 supports 46 IP multicasting groups by IP relay. If no multicast router is detected, the CoreBuilder 5000 hub acts as an IGMP querier to allow the network to determine hosts that are members of a group.

The CoreBuilder 5000 allows the user to create ports in the vbridge that are classified as router ports. This ensures that multicast data is always flowing over the link.

Multicast packets are received by all multicast routers on the LAN because the switches always flood all multicast packets. Routing protocol packets and data packets are flooded toward all ports on which routing protocols have been received. To decrease the flooding of multicast packets through a hub multicast router, the ports must be identified.

The location of the multicast routers can either be configured by management or determined by snooping on protocols such as PIM, MOSPF, and DVMRP. After the router ports are determined, filters are set up within the CoreBuilder 5000 hub to identify these ports and the specific multicast packets flowing to each port.

No Multicast Routers on the Network

To receive the IGMP reports, networks that do not have multicast capable routers need to have a designated querying device. The CoreBuilder 5000 hub can be the designated querier in a network without any multicast routers.

The designated querier is the IGMP query-capable device with the lowest IP address in a flooding domain. If a multicast router is found on the network, the CoreBuilder 5000 SwitchModule does not send IGMP queries, even if it has the lowest IP address. However, in a switched fabric that does not have any multicast routers, the CoreBuilder 5000 hub elects a designated querier in the absence of query packets.

You must assign an IP address to a vbridge via the DMM console to designate the CoreBuilder 5000 SwitchModule as a querying device.

Enabling IGMP Snooping on CoreBuilder 5000 SwitchModules

5-7

Enabling IGMP Snooping on CoreBuilder 5000 SwitchModules

IGMP snooping on

a CoreBuilder 5000

SwitchModule

IGMP snooping can be enabled on the following CoreBuilder 5000 SwitchModules:

■

FTE SwitchModule v1.2

■

GigaFTE SwitchModules

When you enable IGMP snooping on either an FTE SwitchModule, v1.2, or a GigaFTE SwitchModule, the IP multicast bit is enabled in the module’s Receive Control Register. This causes the module’s receive state machine to parse all IP packets looking for the IGMP protocol. If the packet is an IGMP packet, it is directed to the management processor queue for snooping purposes.

The management processor then learns the multicast address and adds it to the module’s forwarding tables. When the IP multicast bit in the module’s Receive Lookup Control Register is enabled, the forwarding table entries have a 36-bit destination port map. When a packet enters the module, the processor looks up the address and directs the packet to the allowed destination port map. Figure 5-4 shows a typical FTE DRAM address forwarding entry.

The only difference between the modules when IGMP snooping is enabled is that the IP Multicast Bit is Bit <20> in the FTE, v1.2 module and Bit<13> in the GigaFTE module.

5-8

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5: I

NTERNET GROUP MANAGEMENT PROTOCOL

Figure 5-4 shows a typical FTE DRAM address forwarding entry.

(IGMP) S

NOOPING

SrcAge

LrnPort

HashRem RateLimit

Mgmt

Copy

Lock Down

Vlan ID

Dest Slot Unused

FTE Address Forwarding Entry When IGMP Multicast Bit is Disabled

SrcAge

LrnPort

HashRem RateLimit

Allowed Port Map

Mgmt

Copy

Lock Down

Vlan ID

Unused

Dest Slot Unused

FTE Address Forwarding Entry When IGMP Multicast Bit is Enabled

Figure 5-4

FTE DRAM Address Forwarding Entry

Frame Tagging can be set on a CoreBuilder 5000 SwitchModule after it is enabled for IGMP snooping.

ROUBLESHOOTING

This chapter describes:

■

Troubleshooting Using LEDs

■

Recovering from Problems

■

Resetting the ATM Backbone SwitchModule

■

Obtaining Technical Assistance

Troubleshooting Using LEDs

Troubleshooting Base

Module LEDs

This section identifies possible causes and solutions for ATM Backbone SwitchModule LED indications. This section describes:

■

Troubleshooting Base Module LEDs

■

Troubleshooting ATM OC-3 Card LEDs

This section explains the procedures for:

■

Verifying Base Module LED Operation

■

Reading the Base Module LEDs

■

Refer to Determining Corrective Action.

Verifying Base Module LED Operation

If a ATM Backbone SwitchModule LED is not illuminated, use the CoreBuilder 5000 Controller Module or CoreBuilder 5000 Advanced DMM/Controller Module LED test button to verify operation of the base module LEDs. The LED test does not disrupt network operation.

6-2

HAPTER

6: T

ROUBLESHOOTING

When you press the LED test button:

The Controller Module initiates a test to all modules in the hub. All

LEDs should respond by lighting continuously for approximately 5 seconds.

During this time, the bi-color LEDs should alternate between green and

yellow approximately every ½ second.

See Appendix B for instructions about contacting 3Com Technical Support for your product.

Reading the Base Module LEDs

Table 6-1 identifies the normal phases of operation of the base module LEDs upon power-on or hardware reset.

Ta b le 6 - 1

Module Status LED State

Prior to power-on Off Off

Diagnostics upon power-on Yellow Off

Failed diagnostics Yellow Green

Passed diagnostics; ready to exchange data Green Green

Receiving ATM cells and forwarding them to the packetchannel backplane

Module problem indications during normal operation

* Refer to Determining Corrective Action.

Base Module LED Status

MOD STAT

Green Yellow

Steady yellow or Off

PACKET CHANNEL

Off

Troubleshooting Using LEDs

6-3

Determining Corrective Action

Table 6-2 identifies appropriate corrective actions for each base module LED indication.

Ta b le 6 - 2

LED LED State Possible Cause Corrective Action

MOD STAT Green Normal operating indication. None required.

PACKETCHANNEL Green SwitchModule is correctly

Base Module LED Corrective Actions

Off No power to hub. Check the controller module power

The hub does not have enough available power for a new module installation.

The ATM Backbone SwitchModule is faulty.

Yellow Module failed power-on

diagnostics.

inserted in hub and recognizes PacketChannel backplane.

Off ATM Backbone SwitchModule

Yellow ATM Backbone SwitchModule

Yellow Blinking

is not connected to backplane.

Slot does not support PacketChannel operation. To verify, enter the command SHOW MODULE. The General Information field states “ATM Slot” if the slot is reserved for ATM.

PacketChannel backplane not installed or incorrectly installed in the hub.

transmitting heavy traffic levels to the PacketChannel backplane.

ATM Backbone SwitchModule transmitting normal traffic levels to the PacketChannel backplane.

LEDs.

Add another power supply to the hub.

Use the SHOW POWER BUDGET command to ascertain available power in the hub.

Insert a different ATM Backbone SwitchModule.

Reset ATM Backbone SwitchModule (page 6-12).

Re-seat ATM Backbone SwitchModule in CoreBuilder 5000 hub.

Refer to “Recovering from Problems” on page 6-5.

None required.

Re-seat the ATM Backbone SwitchModule in the slot.

Install the ATM Backbone SwitchModule in slots 1 through 8 or 13 through 17.

Re-install the PacketChannel backplane or purchase a PacketChannel backplane. Contact your supplier.

None required.

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Troubleshooting ATM

OC-3 Card LEDs

This section explains how to read the ATM OC-3 card LEDs and determine appropriate corrective action

The LEDs on the base module and ATM OC-3 cards function independent of each other.

Table 6-3 identifies possible causes and corrective actions for each LED state.

Ta b le 6 - 3

LED LED State Possible Cause Corrective Action

TX Green ATM signal detected. None required.

RX Green ATM signal detected. None required.

ACTIVE Green Identifies active ATM OC-3

ALARM Green ATM OC-3 card failed. If alternate ATM OC-3 card is installed,

ATM OC-3 Card LED Corrective Actions

Yellow Transmitting ATM cells. None required.

Off Problem with ATM switch

connection (such as cable not connected to ATM OC-3 card).

ATM OC-3 card failed. If alternate ATM OC-3 card is installed,

Yellow Receiving ATM cells. None required.

Off Problem with ATM switch

connection (such as cable not connected to ATM OC-3 card).

ATM OC-3 card failed. If alternate ATM OC-3 card is installed,

card.

Off ATM OC-3 card inactive. If alternate ATM OC-3 card is installed,

ATM OC-3 card failed. If alternate ATM OC-3 card is installed,

Off Normal operating condition. None required.

Check ATM switch connection and interface.

check that switchover to alternate ATM OC-3 card occurred.

Check ATM switch connection and interface.

check that switchover to alternate ATM OC-3 card occurred.

None required.

check that an alternate ATM OC-3 card is active.

check that switchover to alternate ATM OC-3 card occurred.

check that a switchover to alternate ATM OC-3 card occurred.

Refer to “Recovering from Problems” on page 6-5.

Recovering from Problems

6-5

Recovering from Problems

Use the following procedure to recover from operating problems or module failure. Each of these steps is explained in more detail in the sections that follow.

Verify that the DMM can communicate with the ATM Backbone

SwitchModule

Verify that the correct software versions are installed.

Verify that the critical configuration parameters settings of the ATM

Backbone SwitchModule match those of the ATM switch to which it is connected.

Verify ATM OC-3 Card Functions.

Verify ATM Signalling Functions.

Verify LEC Functions.

Verify Bridging Configuration.

Verify that a CoreBuilder 5000 SwitchModule has a vbridge configured

on the same bridge port as the CoreBuilder 5000 ATM Backbone SwitchModule bridge port.

Verify Data Movement.

Verify ATM OC-3 Switchover Functions.

Record your results for the following procedures. The information may be required if you need to contact your technical support representative.

Verifying DMM

Communication

To isolate a problem in the ATM Backbone SwitchModule, you must be able to communicate with the ATM Backbone SwitchModule from the DMM.

Use the following command to verify that the DMM can communicate with the ATM Backbone SwitchModule:

CB5000 > show module all

Check that the display lists the ATM Backbone SwitchModule model number (6602M-MOD).

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If the ATM Backbone SwitchModule model number is not listed, try each of the following corrective actions:

If the DMM can communicate with the ATM Backbone SwitchModule, proceed to Verifying Software Versions.

Reset the ATM Backbone SwitchModule by pressing the Reset button

on the module front panel (refer to Resetting the ATM Backbone SwitchModule later in this chapter).

Remove and carefully reinsert the ATM Backbone SwitchModule.

Ensure that IP connectivity for the DMM is established. Refer to the

CoreBuilder 5000 SwitchModule User Guide

If necessary, obtain Technical Assistance (refer to Obtaining Technical

for more information.

Assistance later in this chapter).

Verifying Software

Ver s io ns

Be sure that ATM Backbone SwitchModule is using the correct software versions for the following hub components:

■

ATM Backbone SwitchModule (Model Number 6602M-MOD)

■

CoreBuilder 5000 Ethernet or FDDI SwitchModule (version v3.0 or later)

■

DMM or ADMM (version v6.0 or later)

Use the following command to display the software versions of these components:

CB5000 > show module all

Contact your network supplier to determine the correct versions of software and arrange to update the software if necessary.

Recovering from Problems

6-7

Verifying Critical

Parameters

Verifying ATM OC-3

Card Functions

Verify that the settings of the following critical parameters match those of the ATM switch to which the ATM Backbone SwitchModule is connected:

■

UNI version (default is 3.0)

■

LEARP Quiet Time (default is 5 seconds)

■

Configuration mode (LEC 1 default is Auto, default for other LECs is Manual)

■

Interface mode (LEC 1 default is Enabled, default for other LECs is Disabled)

■

ELAN Name (LEC 1 default is Admin, default for other LECs None)

■

Vbridge assignment (LEC 1 default is vbridge 1, default for other LECs is Unassigned)

See the

Reference

CoreBuilder 5000 ATM Backbone SwitchModule Command

for more information on these parameters.

Use the following procedure to verify each of the following ATM OC-3 card functions:

With the OC-3 fiber cables attached, verify that the Alarm LED of the

ATM OC-3 card is illuminated green.

If the Alarm LED is illuminated green, reverse the fiber optic cable connections to the ATM OC-3 card and reverify the Alarm LED.

Use the following command to check the additional port status

indicators for the ATM OC-3 card:

CB5000 > show port <slot. phy_num>

Verify that the display lists the following indicators:

■

Status for the (PHY) port is OK

■

Mode for the (PHY) port is Enabled

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Use the following command to check the following SONET status

indicators:

CB5000 > show sonet <slot .phy_num> status

Verify that the display lists status is OK for the following indicators:

■

Line Current Status

■

Section Current Status

■

Path Current Status

Record any indications that are not as expected and proceed to

Verifying ATM Signalling Functions.

Verifying ATM

Signaling Functions

Use the following procedure to verify ATM signaling functions:

Use the following command to check the UNI Version setting of your

ATM Backbone SwitchModule:

CB5000 > show atm <slot> interface

Examine the setting of the UNI Version parameter of the ATM Backbone SwitchModule. It must match the ATM switch setting to which it is connected. The valid settings are:

■

3_0

■

3_1

Contact your network supplier for the UNI version setting of the ATM switch.

If necessary, reset the UNI Version parameter and corresponding ATM

signalling times using the following command:

CB5000 > set atm <slot> uni_version 3_1

(or

If you made any changes in Step 2, reset the module using the

3_0

)

following command:

CB5000 > reset module <slot>

ATM commands do not take effect until you reset the module. Use the DMM RESET MODULE command to enable any ATM parameter changes.

Recovering from Problems

Use the following command to display vcc parameters:

CB5000 > show atm <slot> vcc all

Verify the following parameters settings:

■

SIG is 0/5

■

ILMI is 0/16

If necessary, use the following command to reset the ILMI parameter:

CB5000 > set atm <slot> ilmi pvc 0/16

ATM commands do not take effect until you reset the module. Use the DMM RESET MODULE command to enable any ATM parameter changes.

If the SIG parameter is not set to 0/5, contact your network supplier to

set the SIG parameter to 0/5 at the ATM switch.

Record the final settings of your ATM signalling parameters before

continuing.

6-9

Verifying LEC

Functions

Use the following procedure to verify the functions of a LEC:

Use the following command to display the configuration mode of the

LEC:

CB5000>

■

show bport_lec <slot.l ec> configu ration

If the configuration mode is manual, check the command display to verify that the correct LES ATM Address is listed. The LES ATM Address of the LEC must match the LES ATM Address of the ELAN to which the LEC is assigned.

■

If the configuration mode is automatic, check the command display to verify that the ELAN Name parameter is set to the ELAN Name required by the ATM switch.

Contact your ATM switch service representative to determine the correct LES ATM Address and ELAN Name setting.

Check the command display in step 1 to verify that the Mode

parameter for the LEC is set to Enabled.

If the Mode parameter is not set to Enabled, use the following command to reset the Mode parameter to Enabled:

CB5000 > set bport_lec <slot.lec> mode enable

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Use the following command to display the LAN/E status of the LEC:

CB5000 > show bport_lec <slot.lec> status

Check the indication of the Interface State parameter. The possible status indications are:

■

Initial

■

Configure

■

Join

■

Bus connect

■

Operational

If the Interface State is Operational, the LEC and ATM parameters are configured correctly.

If there is any other indication, record the result and continue with the procedure.

Check the command display in step 3 and record the Last Failure State

parameter.

If the Last Failure State indicates:

■

Configure

— The ATM Backbone SwitchModule is having problems with the LECS. Contact your ATM switch service representative to verify the LECS configuration.

■

— The ATM Backbone SwitchModule is having problems

Join

connecting with the LES. Contact your ATM switch service representative to verify the LES address and ELAN name and the operation of the BUS service provider.

■

Bus Connect

— Contact your ATM switch service representative to

verify the operation of the BUS service provider.

Recovering from Problems

6-11

Verifying Bridging

Configuration

Verifying Data

Movement

Use the following procedure to verify the bridging configuration of the ATM Backbone SwitchModule:

Use the following command to display information about the LEC

bridging configuration.

CB5000 > s how bridge_por t <slot.lec> verbose

Verify that the bridge port is set to a valid vbridge (1 through 240).

If the bridge port is not set to a valid vbridge, use the following command to reset it to the correct vbridge:

CB5000 > set br idge_port <slot.lec> vbridge <vbridgenumber>

Use the following command to display information about the vbridge

configuration:

CB5000 > show bridge_port <slot.bridgeport>

Verify that the vbridge is assigned to the correct Ethernet or FDDI SwitchModule port.

Use the following procedure to determine if there is packet and ATM cell data movement through the ATM Backbone SwitchModule:

Use the following command to display ATM statistics:

CB5000 > show atm <slot> statistics

Note the values for the ATM and AAL5 ATM cell counters.

Reissue the ATM statistics command and check that the counters have

changed.

Use the following command to display bridge port interface statistics:

CB5000 > s how counter bri dge_port <slot.lec> interface

Note the values for the Packet Counters statistic

Reissue the bridge port interface command and check that the Packet

Counters statistic has changed.

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Verifying ATM OC-3

Switchover

Resetting the ATM Backbone SwitchModule

If the Redundant ATM OC-3 card does not become active upon failure of the primary ATM OC-3, use the following command to verify that the PHY Automatic Failover parameter is Enabled:

CB5000 > show module <slot. phy> verbose

If the PHY_Automatic_Failover parameter is not Enabled, use the following command to enable it:

CB5000 > set module <slot>.1 phy_autom atic_failover enable

If the ATM Backbone SwitchModule is still experiencing problems after you complete the procedures above, refer to Obtaining Technical Assistance later in this chapter.

You can reset the ATM Backbone SwitchModule by either pressing the front panel Reset button or issuing the DMM Reset command.

CAUTION:

If you reset the ATM Backbone SwitchModule using the DMM RESET command, the module does not lose saved setup information. However, performing a reset may cause some of the data being transmitted at that moment to be lost and statistic counters to be reset to zero.

Using the Reset

Button

Each ATM Backbone SwitchModule front panel houses a Reset button. The Reset button resets the ATM Backbone SwitchModule and executes power up self-test diagnostics.

CAUTION:

Use the Reset button only if you suspect a problem with the ATM Backbone SwitchModule. Using the Reset button to reset an ATM Backbone SwitchModule disrupts network traffic.

To ensure that you do not lose any configuration information, before you use the Reset button:

■

Save any configuration changes

■

Wait at least 30 seconds after saving configuration changes

Obtaining Technical Assistance

6-13

Obtaining Technical Assistance

You can receive assistance for installing and troubleshooting an ATM Backbone SwitchModule by calling either your 3Com reseller or 3Com network supplier. Be prepared to supply a representative with the following information:

■

Description of the problem

■

Steps you have taken to try and correct the problem

■

Type and software version of the CoreBuilder 5000 management module being used

■

Version of software installed on your ATM Backbone SwitchModule, Ethernet or FDDI SwitchModule, and DMM

■

Status of the front panel LEDs

■

Configuration of your hub. (You may find it helpful to refer to the Slot Usage Chart shipped with the

System Hub Installation and Operation Guide

CoreBuilder 5000 Integrated

for a record of this

information.)

See Appendix B for instructions on how to get technical support for your product.

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3COM 5000 ATM User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Audience

How to Use This Guide

Conventions

Related Documents

3Com Documents

Reference Documents

SNMP and MIB-Based Information

ATM Backbone SwitchModule Overview

ATM Backbone SwitchModule Features

Seamless ATM Migration

Multiple Redundancy Levels

ATM Forum Specification Compliance

Switched Virtual Circuit Capacity

Emulated LAN (ELAN) Capacity

Hot Swap Feature

ATM Backbone SwitchModule Architecture

Management Processor

Packet Switch Processor

Primary ATM OC-3 Card

Redundant ATM OC-3 Card

ATM Backbone SwitchModule Descriptions

PacketChannel Backplane Description

Sample ATM Backbone SwitchModule Configurations

Basic Configuration

General Definition of LAN Emulation

LAN Emulation Components

General LANE Components

LAN Emulation Client (LEC)

LAN Emulation Configuration Server (LECS)

LAN Emulation Server (LES)

Broadcast and Unknown Server (BUS)

ATM Backbone SwitchModule LANE Components

Bridgeport-LEC

LAN Emulation Data Exchange

Virtual Bridge (vbridge)

Emulated LAN (ELAN)

Protocol Stacks

Packets Versus Cells

LAN Emulation Connections

Control VCCs

Data VCCs

LAN Emulation Operation

Initialization

LECS Connection

Configuration

Joining

BUS Connection

Data Movement

Configuration Tools

Transcend Network Control Services for UNIX

Transcend Network Management Software for Windows

Third-Party SNMP-Based Tools

Setting Up DMM Access

Configuration Process Overview

Configuration Components

LAN Emulation Configuration

Bridge Configuration

ATM Configuration

Configuring LAN Emulation Parameters

Configuring ATM OC-3 Card Redundancy

Configuring IGMP Snooping Parameters

Using DMM/ADMM Commands

SHOW VBRIDGE

Displaying General Vbridge Configuration Information

Displaying Detailed Vbridge Configuration Information

Displaying IGMP Snooping Vbridge Information

SHOW MODULE

SHOW BRIDGE_PORT

Displaying General Status Information

Displaying Detailed Information

SHOW ATM

ATM Interface Parameters

ATM Stat i s ti cs

ATM Traff ic Description

ATM VC C s