We have Cisco fex Switches which connect to 5696 and we see this errors on them.

"forwarding ASIC Buffer failure"

Do you have any Experiences ?

  • 3
    We cannot solve hardware problems. You need to contact Cisco TAC about replacing the switch..
    – Ron Maupin
    Oct 17 at 13:24

That’s hardware failure. You’ll need to open up a Cisco TAC case for them to assist and likely issue an RMA to replace the FEX.


Likely a hardware problem, like the others have mentioned, but possibly a reboot could already help: https://community.cisco.com/t5/server-networking/nexus-2148-asic-failure/td-p/1642252 - I'd also try a full power cycle.

  • 1
    It happens again after reboot. Oct 17 at 18:30
  • 1
    Then you should contact TAC.
    – Zac67
    Oct 17 at 18:35

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