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Cisco Bug: CSCvs42280 - C9200L/9200 : Stack Cable or Stack Adapter or Uplink FRU module (NM) hardware authentication failed

Last Modified

Oct 09, 2020

Products (1)

  • Cisco Catalyst 9200 Series Switches

Known Affected Releases

16.11.1 17.1.1

Description (partial)

Symptom:
In a C9200L/C9200 stack system, some brand new stacking cables or stack adapters or Uplink FRU module (NM) fail authentication which results in inability of the stack member to bootup when the affected stack cable or stack adapter is installed and in case of Uplink FRU module (NM) the switch would bootup fine but the corresponding ports on the NM would not be functional. 
The following error error message would be seen during the system bootup : 

<1> For Stack Cable Authentication failure : The stack switch will reload and may show any of the error messages as below:

*** Stack cable authentication failed for cable inserted on stack port 1 on switch 2 ***
*** Stack cable authentication failed for cable inserted on stack port 2 on switch 2 ***
*** Stack cable authentication failed for cable inserted on stack port 1 on switch 1 ***
*** Stack cable authentication failed for cable inserted on stack port 2 on switch 1 ***

<2>
For Stack Adapter Authentication failure: The stack switch will reload and may show any of the error messages as below:
Stack Adapter Auth Fail : SIF_SERDES_CABLE_EASTBOUND 
*** Stack adapter authentication failed on stack port 1 on switch 1 

*** Stack adapter authentication failed on stack port 2 on switch 1 
Stack Adapter Auth Fail : SIF_SERDES_CABLE_WESTBOUND

<3>
For Network Module Authentication failure: The Network Module and corresponding ports on it will not work but rest of the switch would continue to operate fine. It may show the error message as:

***Uplink FRU module hardware authentication failed***

Conditions:
C9200L/C9200 stack system bootup with the affected stack cable inserted.
The failure mentioned here would be noticed during the system bootup and the products which have not encountered authentication failure and are already in use/functional/service will not run into this issue/failure.
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