Enterasys Networks Enterasys Switch Configuration Guide and Troubleshooting for B3G124 Models

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Using the Reset Switch

Table 4-2 Troubleshooting Checklist (continued)

Problem

Possible Cause

Recommended Action

 

 

 

Port(s) goes into

Loop condition detected.

Verify that Spanning Tree is enabled. Refer to the

standby for no

 

SecureStack B3 Configuration Guide for the instructions to

apparent reason.

 

set the type of STA.

 

 

Review the network design and delete unnecessary loops.

 

 

If the problem continues, contact Enterasys Networks for

 

 

technical support.

 

 

 

User parameters

Clear NVRAM was set using

Reenter the lost parameters as necessary. Refer to the

(IP address, device

CLI commands.

SecureStack B3 Configuration Guide for the instructions to

and module name,

 

configure the switch using CLI commands.

etc.) were lost

 

If the problem continues, contact Enterasys Networks for

when the switch

 

 

technical support.

power was cycled.

 

 

 

 

 

 

Using the Reset Switch

If you forget the switch login password, use the Reset switch to reset the login password to the default password, as described in the following procedure.

Figure 4-3 Reset Switch

À

1Reset switch

4-8 Troubleshooting

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Contents Enterasys SecureStack B3 Page Page Regulatory Compliance Information Electromagnetic Compatibility EMC Supplement to Product Instructions Vcci Notice Declaration of Conformity Enterasys NETWORKS, INC Firmware License Agreement Viii Page Page Contents Troubleshooting Figures Xiv About This Guide Who Should Use This GuideFor Refer to How to Use This GuideRelated Documents Conventions Used in This Guide Following conventions are used in this guideGetting Help Introduction OverviewB3G124-24P Stackable Switch B3G124-48P Stackable Switch B3G124-24P Stackable SwitchB3G124-48P Stackable Switch High-Speed Stack ConnectionsPowered Device Classifications PD Maximum Power Range Usage PoE Power over Ethernet SupportRedundant Power Supply Capability Description of Mini-GBICs Specification ConnectivitySwitch Configuration Using WebView Switch Configuration Using CLI CommandsManagement Standards CompatibilityLanview Diagnostic LEDs Network Requirements 10BASE-TX Network 100BASE-TX Network1000BASE-FX Network 1000BASE-T NetworkHardware Installation Considerations Prior to Installation Unpacking the SwitchContents of Switch Carton Quantity Required ToolsInstalling Optional Mini-GBICs Preparing to Install a Mini-GBICInstalling a Mini-GBIC Mini-GBIC with MT-RJ ConnectorMini-GBIC with LC Connector Removing a Mini-GBICInstalling the Switch on a Flat Surface Installing the Rubber FeetChassis Bottom, Rubber Feet Placement Guidelines for Flat Surface Installation Area Guidelines for Switch Installation on Flat SurfaceAttaching Brackets and Installing in Rack Rack Mounting the SwitchGuidelines for Rackmount Installation Attaching the Rackmount Brackets Connecting High-Speed Stacking Cables Configuring Switches in a Stack About SecureStack Switch Operation in a StackConfiguring Switches in a Stack Recommended Procedures to Install New and Existing Stacks Installing a New Stackable System of Up to Eight SwitchesConnecting AC and PoE Power AC PowerConnecting AC Power and RPS PoE Redundant Power System Stack Manager SelectionConnecting to Console Port for Local Management What Is NeededConnecting to an IBM or Compatible Device Parameter SettingConnecting to a VT Series Terminal 10 Connecting an IBM PC or CompatibleConnecting to a Modem 11 Connecting a VT Series TerminalConnecting to the Network Connecting UTP Cables13 Connecting a UTP Cable Segment to RJ45 Port 14 Four-Wire Crossover Cable RJ45 Pinouts for 10/100BASE-TX TX1+ RX1 TX2+ TX3+ RX3 RX2 TX4+ RX4 Connecting Fiber-Optic Cables to MT-RJ Ports Connecting to the Network Connecting Fiber-Optic Cables to LC Ports 19 Cable Connection to LC Fiber-Optic Connectors Completing the Installation Initial Logon to Switch ManagementTroubleshooting Using LanviewStack UP LED CPU LEDStack Down LED B3G124-48P Lanview LEDs Lanview LED Diagnostic Indications Color State Recommended ActionCPU DownRPS Mgbic Troubleshooting Checklist Refer to the SecureStack B3 Configuration Guide for properUsing the Reset Switch Reset SwitchUsing the Reset Switch Using the Reset Switch Troubleshooting Specifications Switch SpecificationsTable A-1 B3G124-24P and B3G124-48P Specifications MtbfMini-GBIC Input/Output Specifications Table A-2 Mini-GBIC Input/Output Port SpecificationsMGBIC-LC03 Specifications 1000BASE-SX Gigabit Ethernet SpecificationsMGBIC-LC01/MGBIC-MT01 Specifications 1000BASE-SX MGBIC-LC09 Specifications 1000BASE-LX MGBIC-08 Specifications 1000BASE-ELX MGBIC-02 Specifications 1000BASE-TTable A-9 MGBIC-08 Optical Specifications Table A-11 MGBIC-02 SpecificationsConsole Port Pinout Assignments Regulatory ComplianceTable A-12 Compliance Standards Regulatory Compliance EMCRegulatory Compliance Specifications Index NumericsMGBIC-LC01 A-4 MGBIC-LC03 A-4 MGBIC-LC09 A-5 MGBIC-MT01 A-4