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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
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Appendix A System Error Messages
Error Message and Recovery Procedures
GigaStack Messages
This section contains the GigaStack error messages.
GIGASTACK-6-LOOP_BROKEN
Explanation
This message means that a loop formed by GigaStack modules is
broken because of link loss. Link 2 of the Master Loop Breaker is re-enabled
to replace the broken line.
Action No action is required.
GIGASTACK-6-LOOP_DETECTED
Explanation This message means that a loop has been detected in the
GigaStack, and this GigaStack GBIC is selected as the Master Loop Breaker.
Link 2 of this GigaStack GBIC is disabled to break the loop.
Action No action is required.
GIGASTACK-6-NO_LOOP_DETECT
Explanation
This message means that no acknowledgement for GigaStack loop
detection request is received from one of the links on a GigaStack GBIC.
Either the neighboring switch does not support the GigaStack Loop breaking
algorithm, or the link between the two GigaStack GBICs is broken. Under this
condition, a GigaStack loop topology is not automatically detected, and the
connectivity between switches in the stack could be lost.
Action If loop topology is used in the GigaStack, make sure the latest software
is running on all switches in the stack. Check the GigaStack GBICs involved
to make sure they are functioning.
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