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Cisco Bug: CSCvs19448 - %FCNS-3-BAD_FRAME: %$VSAN 99%$ : Invalid CT command code <<no interface and CT code

Last Modified

Jan 03, 2020

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

8.1(1)

Description (partial)

Symptom:
Syslog error message missing the interface where the command came from and it's missing the command code that was invalid. 

<pre>

 %FCNS-3-BAD_FRAME: %$VSAN 99%$ : Invalid CT command code
</pre>

Source interface is also missing for the error message in show fcns internal errors:

<pre>

...

8) Event:E_DEBUG, length:94, at 651075 usecs after Wed Nov 20 10:58:26 2019
    [825307441]  ns_handle_command(6273): vsan:20 FC2: Received a frame with invalid CT command code 1801


9) Event:E_DEBUG, length:94, at 647947 usecs after Wed Nov 20 10:58:26 2019
    [825307441]  ns_handle_command(6273): vsan:20 FC2: Received a frame with invalid CT command code 3901
</pre>

Conditions:
Occurs when attached device sends in an invalid FCNS command.
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Bug Details Include

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