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Cisco Bug: CSCtb74201 - IVR : Unexpected PSS cursor loc. may cause stale IVR virt dom entries

Last Modified

Nov 29, 2018

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

3.3(2)

Description (partial)

Symptom:

When stale non-advertized  IVR virtual domain entries get stuck after an HA failover, upgrading switches with these stale entries to 3.3.2 or later may fail to clear up these entries due to some corner cases where an unexpected location of the PSS(Persistent Storage Service- An inner data structure to save info for process) cursor occurs because of a limitation of the current PSS implementation. This in turn may lead to IVR zoneset activation failures.

Conditions:
the PSS delete implementation used before is not standard deletion method offered by PSS. After delete one pss entry, pss cursor location is also moved manually.  This method causes some of the entries cannot be removed after HA switchover. The cursor location should be maintained by PSS not by IVR. After each deletion, the cursor location is moved automatically by PSS.

Workaround(s):
Upgrade the image version to 4.2.1b or 4.2.3 or above.

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