Nortel Networks 207344-B manual Label Color/Status Meaning

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Using the Centillion EtherSpeedII Switch Modules

Table C-1 describes the operating conditions that cause the LEDs to light on the switch module.

Table C-1. LEDs on the EtherSpeedII 10/100BASE-T Switch Module

Label	Color/Status	Meaning

LINK (port status)	Green	Link present
	Yellow	TX/RX activity
	Off	No link established

10/100 (port speed)	Off	Port operating at 10 Mb/s
	Green	Port operating at 100 Mb/s
	Amber	Line error
		The port speed LED illuminates amber for
		the following reasons:
		•	Frame too long
		•	CRC errors
		•	Alignment errors

• Transmit and receive collisions (HDX mode)

C-2

207344-B

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Contents Using the Centillion EtherSpeedII Switch Modules Trademarks Statement of ConditionsUSA Requirements Only European Requirements OnlyCanada Requirements Only Japan/Nippon Requirements OnlyTaiwan Requirements Nortel Networks Software License Agreement 207344-B 207344-B Contents Chapter Troubleshooting 207344-B 207344-B Figures Xii Tables Xiv Preface Before You BeginRelated Publications Hard-Copy Technical ManualsHow to Get Help Technical Solutions Center Telephone NumberPage Overview of the EtherSpeedII Switch Modules Overview of the Switch ModulesFeatures of the Switch Modules EtherSpeedII Switch Modules in a Network CenterOverview of the EtherSpeedII Switch Modules Physical Description of the Switch Modules EtherSpeedII 10/100BASE-T 20-Port Switch ModuleEtherSpeedII 100BASE-FX 16-Port Switch Module LED Displays on the Switch Modules LEDs on the EtherSpeedII 10/100BASE-T Switch ModuleSwitch Configuration and Management Network Management Applications and FeaturesSnmp MIB Support Command Line InterfaceMCP Modules Tftp Support Spanning Tree Protocol 802.1d SupportSupport for Virtual LANs Filtering10/100 Mb/s Autonegotiation Ports Hot-Swapping CapabilityChapter Planning a Network with EtherSpeedII Switch Modules EtherSpeedII 10/100BASE-T Switch ModuleNetwork Configuration Examples EtherSpeedII 100BASE-FX Switch ModuleNetwork Example Giving a Server a Dedicated Port AfterReplacing a Bridge Replacing a BridgeDesktop Switch with ATM Uplinks Data Center ATM RouterSegment Switch in an Enterprise Network Data CenterDesktop Switch and Frame-to-Cell Converter Wiring ClosetMultiLink Trunking MultiLink Trunking ExampleDefault Port Configuration Factory Default Settings for the 10/100BASE-T Switch ModulePredefined SpeedView Configurations ATMPage Installing the EtherSpeedII Switch Modules Preparing for InstallationInstalling a Switch Module SafetyRemove the filler panel Slot Module Guides Seating the Module Checking LEDs on the Switch Modules LED Display for the 10/100BASE-T switch moduleLED Display for the EtherSpeedII 100BASE-FX Switch Module Making 10/100 Mb/s Cable Connections Removing a ModuleWait 45 seconds Installing the Replacement Switch Module Reconfiguring the Replacement Switch ModuleChapter Troubleshooting EtherSpeedII Switch Module Startup Failure Port Connection Problems From the Map window, choose StatisticsFrom the Map window in SpeedView, choose Statistics Appendix a Technical Specifications StandardsMemory Technical Specifications Page Appendix B Cables and Connectors UTP Cable Length LimitationsUTP Cabling 10BASE-T/100BASE-TX MDI Ports and MDI-X PortsFigure B-2. MDI-X to MDI-X External Crossover RJ-45 Example Figure B-3 illustrates an MT-RJ connector UTP Cables and Connectors Figure B-4 BASE-T/100BASE-TX Ethernet UTP Crossover CableUsing Category 5 Unshielded Twisted Pair Cables Using Shielded Twisted Pair Cables Figure B-5. Fast Ethernet Type 1 Balun Media AdapterPage Appendix C LED Displays on EtherSpeedII Switch Modules Label Color/Status Meaning LED Displays on the EtherSpeedII Switch Modules Table C-2. LEDs on the EtherSpeedII 100BASE-FX Switch Module Index NumbersIndex-2 Index-3 Index-4