10-02-2022 08:26 PM
Reference discussion: https://community.cisco.com/t5/data-center-switches/nexus-vpc-extension/m-p/4545745/thread-id/7998
I have attached configuration files of 6 switches here.
Whenever I am turning ports from NX 3 and 4 (connected with core switches) up, a STP loop is occurring between vpc domain 1 and 12. I have attached screenshot of few logs from N9K-1, N9K-2, Core1 and Core2 switch.
Can you please help with any possible suggestion to avoid this loop?
Thanks in advance.
10-02-2022 09:00 PM
10-02-2022 11:44 PM
To have the full picture, please add port-channel numbers on the diagrams and share the config files again (they are missing from first post).
10-03-2022 12:28 AM
10-03-2022 12:29 AM
10-03-2022 10:17 AM
Few things I should mention:
For your better understanding, I have attached an updated diagram.
10-08-2022 11:26 PM
Any suggestion please?
03-01-2023 10:45 PM
Isn't the vPC supposed to go across both switches - i.e. combine the port-channels on both switches in the same vPC domain?
03-02-2023 06:12 PM
You are correct.
In the above super pretty image I attached. You would have port-channel red and port-channel blue... Then you would have vpc red and vpc blue.
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