Periodical lost connection to APIC controller

[kz-support]

Hello everyone!

I have a problem, periodically my APIC controller is lost on the ACI factory for about 15 minutes
At the same time, the controller also did not respond via mgm IP, although the port on the switch where it was connected was in UP

In this case we observe the following Fault code F0321 

Screenshots are in the attachment

Thank you in advance

[AshSe]

Hello @kz-support , please check the following diagnostics and troubleshooting steps:

1. Check physical connections and switch port configuration.
2. Review APIC3 controller logs and resource utilization.
3. Ensure no IP conflicts and network stability.
4. Verify cluster health and redundancy.
5. Check environmental factors like power and temperature.
6. Contact Cisco TAC for further assistance if needed.

HTH

[kz-support]

thnx for your answer

I want to say that we did  this command under admin privileges, but we didn't see the section that may be help us

acidiag cluster

Admin password:

Running...

Checking Wiring and UUID: Password Required!

Checking AD Processes: Running

Checking All Apics in Commission State: OK

Checking All Apics in Active State: OK

Checking Fabric Nodes: OK

Checking Apic Fully-Fit: OK

Checking Shard Convergence: Password Required!

Checking Leadership Degration: Optimal leader for all shards

Ping OOB IPs:

APIC-1: 10.1.151.53 - OK

APIC-2: 10.1.151.54 - OK

APIC-3: 10.1.151.55 - OK

Ping Infra IPs:

APIC-1: 172.1.0.1 - OK

APIC-2: 172.1.0.2 - OK

APIC-3: 172.1.0.3 - OK

Checking APIC Versions: Same (5.2(3g))

Checking SSL: OK

Full file system(s): None

Done!