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Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 39 Troubleshooting
Troubleshooting Tables
Slow traffic throughput on stack
ring
Test the switch interface. Defective StackWise switch interface.
Note The only solution is to replace the
switch.
Problems with stack master
election. stacks merging, or new
switches joining stack
Review the rules of stack master election. Current stack master is rebooted or
disconnected.
Port numbering seems off. Verify port numberin.
Enter the show switch privileged EXEC
command.
Interpret state messages..
Stack members need to be
upgraded.
Stack members running different major
or minor versions of the Cisco IOS
software.
Defective StackWise switch interface or cable.
StackWise link connection
problems
Look at the LED behavior. Stack not operating at full bandwidth.
Table 39-7 Switch Stack Troubleshooting Scenarios (continued)
Symptom/problem How to Verify Problem Possible Cause/Solution
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