Cisco Catalyst 2960 Software Configuration Manual page 922

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Troubleshooting Tables

Switch Stack Troubleshooting Scenarios (continued)

Symptom/problem

Slow traffic throughput on stack

Problems with stack master

election. stacks merging, or new

switches joining stack

Stack members need to be

StackWise link connection

Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE

How to Verify Problem

Test the switch interface.

Review the rules of stack master election. Current stack master is rebooted or

Port numbering seems off.

Enter the show switch privileged EXEC

Stack members running different major

or minor versions of the Cisco IOS

Look at the LED behavior.

Possible Cause/Solution

Defective StackWise switch interface.

The only solution is to replace the

disconnected.

Verify port numberin.

Interpret state messages..

Defective StackWise switch interface or cable.

Stack not operating at full bandwidth.

Troubleshooting

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