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Cisco Bug: CSCvv74148 - Traceback: C9200 reloads with "show monitor capture <capture_name> buffer brief"

Last Modified

Oct 14, 2020

Products (1)

  • Cisco Catalyst 9200 Series Switches

Known Affected Releases

16.12.3

Description (partial)

Symptom:
A unexpected reload triggers on a Catalyst 9200 when the command "show monitor capture <capture_name> buffer brief" is used.

The crash triggers by a segmentation fault:
 UNIX-EXT-SIGNAL: Segmentation fault(11)
 
The process that triggers the crash changes if the command is used through:
 - TELNET
 - SSH
 - Console

Conditions:
The device is configured with a control-plane packet capture:
 - monitor capture CAPTURE control-plane both match any
 - monitor capture CAPTURE start
 - show monitor capture CAPTURE buffer brief | include <filter>

The reload triggers with any of these scenarios after the capture buffer has data in it :
 - Specific control-plane traffic packet (NULL)
 - Very high rate of control-plane traffic capture
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  • Full Description (including symptoms, conditions and workarounds)
  • Status
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