CSCwi08472 - Crashes in C9800 @ 17.9.4a Critical process wncd fault

phollmann · ‎04-04-2024

I hat two crashes in my LAB with 17.9.4a an a HA-cluster.

Crash situations:

1) After setting up AVC for policy profiles (Configuration > Service > Application Visibility)

2) Without config change on WLC. Only a new client connected to WiFi (used one of the AVC enabled policy-profile)

When HA-cluster is in SSO state, the chassis 2 takes over and chassis 1 is reloading. Finally the cluster is up again (chassis 2 active). When doing a "force-switchover" to make chassis 1 active again, both chassis seemed to crash.

Rich R · ‎05-11-2024

@phollmann the bug you referenced (CSCwi08472) is marked Unreproducible (since 2nd April before you posted this).

Did you get TAC to diagnose the crashinfo/core/system report files after these crashes?

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TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
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phollmann · ‎05-20-2024

Hello Rich R,

the TAC case is still in progress (697149191). Multiple crash files where analysed by TAC.

In the meanwhile I had crashes without AVC, too. A simple client connect seems to be enough for the crash.

But I could not find a pattern.

phollmann · ‎05-20-2024

TAC created a new bug id (CSCwj81829) for my issue.

P.S.: We have seen the issues only for 802.1x clients.