3Com 5000 ATM manual Active

Page 90

6-4CHAPTER 6: TROUBLESHOOTING

Troubleshooting ATM This section explains how to read the ATM OC-3 card LEDs and OC-3 Card LEDs 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.

Table 6-3ATM OC-3 Card LED Corrective Actions

LED	LED State	Possible Cause	Corrective Action

TX	Green	ATM signal detected.	None required.

	Yellow	Transmitting ATM cells.	None required.

	Off	Problem with ATM switch	Check ATM switch connection and
		connection (such as cable not	interface.
		connected to ATM OC-3 card).

ATM OC-3 card failed.

If alternate ATM OC-3 card is installed, check that switchover to alternate ATM OC-3 card occurred.

RX	Green	ATM signal detected.	None required.

	Yellow	Receiving ATM cells.	None required.

	Off	Problem with ATM switch	Check ATM switch connection and
		connection (such as cable not	interface.
		connected to ATM OC-3 card).

ATM OC-3 card failed.

If alternate ATM OC-3 card is installed, check that switchover to alternate ATM OC-3 card occurred.

ACTIVE	Green	Identifies active ATM OC-3	None required.
		card.

Off	ATM OC-3 card inactive.

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

ATM OC-3 card failed.

If alternate ATM OC-3 card is installed, check that switchover to alternate ATM OC-3 card occurred.

ALARM	Green	ATM OC-3 card failed.	If alternate ATM OC-3 card is installed,
			check that a switchover to alternate
			ATM OC-3 card occurred.

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

	Off	Normal operating condition.	None required.

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Contents CoreBuilder 5000 ATM Backbone SwitchModule User Guide Santa Clara, California 3Com CorporationBayfront Plaza 95052-8145Contents LAN Emulation Overview Configuring the ATM Backbone Switchmodule Internet Group Management Protocol Igmp Snooping Troubleshooting Technical Support Figures Page Tables Page Audience About this GuideIntroduction GuideIcon Type Description SETDefault !0 -IP NETaddr =Conventions Convention DescriptionCommands KeysAbout this Guide Related Documents About this Guide ATM Backbone SwitchModuleIntroduction OverviewMultiple Redundancy Levels ATM Forum Specification ComplianceSwitched Virtual Circuit Capacity CoreBuilder 5000 Chassis CompatibilitySupported CoreBuilder SwitchModules Hot Swap Feature Standards ATM Backbone SwitchModule ArchitectureStandards MIBsATM Backbone SwitchModule Architecture 2ATM Backbone SwitchModule Base Configuration DescriptionsATM Backbone SwitchModule Descriptions Backplane PacketChannel plus ATM Cell-Switching SwitchChannelPacketChannel DescriptionSlot, or Sample ATM Backbone SwitchModule Configurations 4Example Base ConfigurationNNI Configuration cards 6Example Dual-Homing/Module Redundancy ConfigurationSample ATM Backbone SwitchModule Configurations 14CHAPTER 1 Introduction LAN Emulation Overview 2ATM Backbone SwitchModule Function LAN Emulation ComponentsBroadcast and Unknown Server BUS Bridgeport-LECVirtual Bridge vbridge Emulated LAN Elan6Converting SwitchModule Packets to and from ATM Cells LAN Emulation Connections Control VCCs8Data 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 Configuration Tools Transcend Network Management Software for Windows2Windows Tools for Configuring ATM Backbone SwitchModules Third-Party SNMP-Based ToolsDMM management tools Setting Up DMMAccess DMM DMMLAN Emulation Configuration ConfigurationConfiguration Bridge ConfigurationATM Configuration CB5000 set atm slot universion versionConfiguring LAN EmulationParameters OC-3 Card Configuring ATMCB5000 set module slot.1 phyautomaticfailover enable RedundancyCB5000 set module 9.1 igmpsnooping enable Configuring IgmpCB5000 set atm slot.1 lossofsignallingdelay seconds CB5000 set vbridge 1 igmpsnooping mode enableCB5000 reset module CB5000 show vbridge 1 igmpsnooping status12CHAPTER 3 Configuring the ATM Backbone Switchmodule Status Monitoring Statistics Displaying General Vbridge Configuration Information CB5000 show vbridge all configuration noverboseDisplaying Detailed Vbridge Configuration Information CB5000 show vbridge all configuration verboseDisplaying Igmp Snooping Vbridge Information CB5000 show vbridge 11 igmpsnooping statusOption Information Shown CB5000 show module 4.1 verbose Displaying General Status Information CB5000 show bridgeport 4.allDisplaying Detailed Information CB5000 show bridgeport 4.2 verboseCB5000 show counter bridgeport 4.2 interface CB5000 show count bridgeport 4.2 igmpsnoopingCB5000 show atm 4 interface LearpCB5000 show atm 4 ilmiconfiguration CB5000 show atm 4 q93bCB5000 show atm 4 signalconfiguration CB5000 show atm 4 qsaalCB5000 show atm 4 statistics CB5000 show atm 4 trafficdescriptor allCB5000 show atm 4 vcc all CB5000 show bportlec 4.2 configuration BUSCB5000 show bportlec 4.2 statistics CB5000 show bportlec 4.2 statusCB5000 show bportlec 4.2 servercircuits CB5000 show bportlec 4.2 learptable allCB5000 show sonet 13.1 status CB5000 show sonet 7.1 statistics interval all SectionlinepathCB5000 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 Locating Multicast CoreBuilderSupport RoutersEnabling Igmp Snooping on CoreBuilder 5000 SwitchModules Shows a typical FTE Dram address forwarding entry Troubleshooting Troubleshooting Using LEDsVerifying Base Module LED Operation Reading the Base Module LEDs Module Status LED StateDetermining Corrective Action LED State Possible Cause Corrective ActionActive DMM CB5000 show module all6CHAPTER 6 Troubleshooting Card Functions Card functions Signaling Functions CB5000 show atm slot interfaceCB5000 set atm slot universion Functions CB5000 show bportlec slot.lec configurationCB5000 set bportlec slot.lec mode enable CB5000 show atm slot vcc allCB5000 show bportlec slot.lec status CB5000 show bridgeport slot.lec verbose CB5000 show atm slot statisticsCB5000 show counter bridgeport slot.lec interface Power up self-test diagnostics Obtaining Technical Assistance 14CHAPTER 6 Troubleshooting Environmental SpecificationsSpecifications MechanicalPower ATM OC-3 Card Fiber Optic SpecificationsSpecification Value Technical Support ServicesServices Online TechnicalHostname ftp.3com.com Access by Analog ModemPassword your Internet e-mail address Country Data Rate Telephone NumberAccess by Digital Modem 847 262408 727 Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific RimCountry Telephone Number Fax Number 6APPENDIX B Technical Support Index NumbersLane URL B-1 Index 3Com Corporation Limited Warranty Warranties Exclusive