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Cisco Bug: CSCum43007 - Cold boot during ISSU or ISSD on MDS 9148 chassis

Last Modified

Feb 14, 2018

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

5.2(8b) 6.2(5)S58

Description (partial)

Symptom:
An MDS 9148 switch may experience a cold boot during ISSU/ISSD. This is due to a kernel panic in the 'issu_helper' process:

  show system exception-info
  ...
  1386222127:47334587 process issu_helper (2662), jiffies 0xffff9bed
  Other Info: Kernel Panic: Exception in kernel mode.  Error 0 trap 0 signal 5

Conditions:
This is a rare issue. It can only occur during an ISSU/ISSD and only on the MDS 9148 platform.
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