Issue 2
The hardware defect in Cisco bug ID CSCuu00752 applies specifically to the FlexStack Plus module (C2960X-STACK=) only. These errors might be seen when a 2960X is booted up with an affected Flexstack Plus module. Note that this issue affects less than 0.03% of the install base.
"POST: ACT2 Authentication : End, Status Passed FlexStack Module SmartChip Authentication Failed". Note that POST is the "Power On Self Test" that is run when the switch boots up. ACT2 is the Smart Chip responsible for hardware authentication.
"%ILET-1-DEVICE_AUTHENTICATION_FAIL: The FlexStack Module inserted in this switch might not have been manufactured by Cisco or with Cisco's authorization. If your use of this product is the cause of a support issue, Cisco might deny operation of the product, support under your warranty or under a Cisco technical support program such as Smartnet. Please contact Cisco's Technical Assistance Center (TAC) for more information."
Solution：
Issue 2
Ensure that the solution for issue 1 is in place.
If the FlexStack ILET message continues then the FlexStack Plus module (C2960X-STACK=) needs to be replaced. Field Notice 63972 can be used in order to proactively help identify specific FlexStack Plus module serial numbers that are impacted by Cisco bug ID CSCuu00752 and also provides the procedure to get them replaced. Note that this issue affects less than 0.03% of the install base.
Issue 3
A C2960X-FIBER-STK or C2960X-HYBRID-STK FlexStack Extended module may experience the following ILET error if the C2960X switch the module is installed in is running software earlier then 15.2(6)E. 15.2(6)E or newer software is the minimum software required to support these 2 module types.
"%ILET-1-DEVICE_AUTHENTICATION_FAIL: The FlexStack Module inserted in this switch might not have been manufactured by Cisco or with Cisco's authorization. If your use of this product is the cause of a support issue, Cisco might deny operation of the product, support under your warranty or under a Cisco technical support program such as Smartnet. Please contact Cisco's Technical Assistance Center for more information."
Solution
Issue 3
Ensure that 15.2(6)E or newer software is running on the C2960X switch the C2960X-FIBER-STK or C2960X-HYBRID-STK FlexStack Extended module is installed in. This is the minimum software required to support these 2 module types.
Workarounds
Issue 2
None
Issue 3
None
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-2960-x-series-switches/118837-technote-catalyst-00.html
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