Some doubts with vpc

[blaton]

I have come across a vpc domain that has created some doubts in me. Is the use of the peer switch and peer gateway commands compatible in the same domain?
And I would like to know if there is any debug that can help me see the vpc message exchange in real time without capturing traffic.

[ericnich]

You would be subject to this bug which only affects non-root domains with peer-switch: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwa83042

The defect was never and likely will never be fixed because the design [peer-switch on non-root] is unsupported. The same is true of any other potential bugs with this approach.

[blaton]

But it says in case of a change in the root bridge, but if there is no change in the root bridge it should not affect it.

[ericnich]

The purpose of STP is to create a redundant loop-free topology in layer 2. If you're operating from the assumption that the network won't change, you might as well just make it loop-free in layer 1.

You're free to pursue any design, but you requested information on what is and isn't allowed. Pavel shared this information, I agree with their view, but you can make the decision for yourself.