3Com 5000 ATM manual LAN Emulation, Components

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LAN Emulation Components 2-3

LAN Emulation	This section identifies:
Components	■ General LANE Components
	■ General LANE Components
	■ ATM Backbone SwitchModule LANE Components
General LANE	The major components of ATM LAN emulation are identified in
Components	Figure 2-3.

Legacy LANs

LAN emulation bridge with one or more LAN emulation clients (LECs)

AT M

n e t w o r k

LAN Emulation

Configuration Server (LECS)

LAN Emulation

Server (LES)

Broadcast and Unknown

Server (BUS)

LAN Emulation

Client (LEC)

Figure 2-3General LAN Emulation Components

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.

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Contents CoreBuilder 5000 ATM Backbone SwitchModule User Guide 95052-8145 3Com CorporationBayfront Plaza Santa Clara, CaliforniaContents LAN Emulation Overview Configuring the ATM Backbone Switchmodule Internet Group Management Protocol Igmp Snooping Troubleshooting Technical Support Figures Page Tables Page Guide About this GuideIntroduction AudienceConvention Description SETDefault !0 -IP NETaddr =Conventions Icon Type DescriptionKeys CommandsAbout this Guide Related Documents About this Guide Overview SwitchModuleIntroduction ATM BackboneCoreBuilder 5000 Chassis Compatibility ATM Forum Specification ComplianceSwitched Virtual Circuit Capacity Multiple Redundancy LevelsSupported CoreBuilder SwitchModules Hot Swap Feature MIBs ATM Backbone SwitchModule ArchitectureStandards StandardsATM Backbone SwitchModule Architecture Descriptions 2ATM Backbone SwitchModule Base ConfigurationATM Backbone SwitchModule Descriptions Description PacketChannel plus ATM Cell-Switching SwitchChannelPacketChannel BackplaneSlot, or 4Example Base Configuration Sample ATM Backbone SwitchModule ConfigurationsNNI 6Example Dual-Homing/Module Redundancy Configuration Configuration cardsSample ATM Backbone SwitchModule Configurations 14CHAPTER 1 Introduction LAN Emulation Overview 2ATM Backbone SwitchModule Function Components LAN EmulationBridgeport-LEC Broadcast and Unknown Server BUSEmulated LAN Elan Virtual Bridge vbridge6Converting SwitchModule Packets to and from ATM Cells Control VCCs LAN Emulation Connections8Data VCCs in ATM Backbone SwitchModule LAN Emulation LAN Emulation Operation 10CHAPTER 2 LAN Emulation Overview LAN Emulation Operation 12CHAPTER 2 LAN Emulation Overview Configuring the ATM Backbone Switchmodule Transcend Network Control Services for Unix Transcend Network Management Software for Windows Configuration ToolsThird-Party SNMP-Based Tools 2Windows Tools for Configuring ATM Backbone SwitchModulesDMM DMM Setting Up DMMAccess DMM management toolsBridge Configuration ConfigurationConfiguration LAN Emulation ConfigurationCB5000 set atm slot universion version ATM ConfigurationParameters Configuring LANEmulation Redundancy Configuring ATMCB5000 set module slot.1 phyautomaticfailover enable OC-3 CardCB5000 set vbridge 1 igmpsnooping mode enable Configuring IgmpCB5000 set atm slot.1 lossofsignallingdelay seconds CB5000 set module 9.1 igmpsnooping enableCB5000 show vbridge 1 igmpsnooping status CB5000 reset module12CHAPTER 3 Configuring the ATM Backbone Switchmodule Status Monitoring Statistics CB5000 show vbridge all configuration noverbose Displaying General Vbridge Configuration InformationCB5000 show vbridge all configuration verbose Displaying Detailed Vbridge Configuration InformationOption Information Shown Displaying Igmp Snooping Vbridge InformationCB5000 show vbridge 11 igmpsnooping status CB5000 show module 4.1 verbose CB5000 show bridgeport 4.all Displaying General Status InformationCB5000 show bridgeport 4.2 verbose Displaying Detailed InformationCB5000 show count bridgeport 4.2 igmpsnooping CB5000 show counter bridgeport 4.2 interfaceLearp CB5000 show atm 4 interfaceCB5000 show atm 4 q93b CB5000 show atm 4 ilmiconfigurationCB5000 show atm 4 qsaal CB5000 show atm 4 signalconfigurationCB5000 show atm 4 trafficdescriptor all CB5000 show atm 4 statisticsCB5000 show atm 4 vcc all BUS CB5000 show bportlec 4.2 configurationCB5000 show bportlec 4.2 status CB5000 show bportlec 4.2 statisticsCB5000 show bportlec 4.2 learptable all CB5000 show bportlec 4.2 servercircuitsCB5000 show sonet 13.1 status Sectionlinepath CB5000 show sonet 7.1 statistics interval allCB5000 show igmpsnooping module Ianaiftype MIB Using Graphical Interface Tools 22CHAPTER 4 Status Monitoring and Statistics Internet Group Management Protocol Igmp Snooping Before implementing Igmp snooping Shows a typical packet path before snooping occurs 2Format of an Igmp Version 1 Message Overview Routers CoreBuilderSupport Locating MulticastEnabling Igmp Snooping on CoreBuilder 5000 SwitchModules Shows a typical FTE Dram address forwarding entry Verifying Base Module LED Operation TroubleshootingTroubleshooting Using LEDs Module Status LED State Reading the Base Module LEDsLED State Possible Cause Corrective Action Determining Corrective ActionActive CB5000 show module all DMM6CHAPTER 6 Troubleshooting Card Functions Card functions CB5000 set atm slot universion Signaling FunctionsCB5000 show atm slot interface CB5000 show atm slot vcc all CB5000 show bportlec slot.lec configurationCB5000 set bportlec slot.lec mode enable FunctionsCB5000 show bportlec slot.lec status CB5000 show counter bridgeport slot.lec interface CB5000 show bridgeport slot.lec verboseCB5000 show atm slot statistics Power up self-test diagnostics Obtaining Technical Assistance 14CHAPTER 6 Troubleshooting Mechanical SpecificationsSpecifications EnvironmentalSpecification Value PowerATM OC-3 Card Fiber Optic Specifications Online Technical ServicesServices Technical SupportCountry Data Rate Telephone Number Access by Analog ModemPassword your Internet e-mail address Hostname ftp.3com.com408 727 Access by Digital Modem847 262 Country Telephone Number Asia, Pacific Rim Europe, South Africa, and Middle EastCountry Telephone Number Fax Number 6APPENDIX B Technical Support Numbers IndexLane URL B-1 Index 3Com Corporation Limited Warranty Warranties Exclusive