Reintegrating Replacement Switch into VPC Pair: Key Checks

[kirank10]

"I'm seeking guidance on reintegrating a replacement switch into our production environment following a hardware failure. We utilize a VPC pair configuration, and one switch suffered complete hardware damage. We've obtained a replacement through the RMA process and need to ensure a smooth transition back into the VPC pair. What are the key checks and considerations before reintegrating the replacement switch into the VPC pair?

[MHM Cisco World]

Many points

But some are 

1- check keepalive IP and it VRF 

2- check vpc domain must be same 

3- most important' stp mode and if you run MST the instances and revisions number must be same 

4- feature like 

Feature vpc

Feature lacp

Feature interface vlan

Feature hsrp

5- vpc number you use in PO to other SW

6- non-vPC vlan and vPC vlan' this need to know which vlan allow in peer-link

MHM

[balaji.bandi]

check the technical guide :  (make sure nexus code is same before put them in to live)

https://www.cisco.com/c/en/us/support/docs/interfaces-modules/nexus-7000-series-supervisor-1-module/119033-technote-nexus-00.html

Note : always take the configuration backup out of the box