Upgrade Nexus 7K switches in VPC mode
Hi,
We have a customer running Nexus 7K switches in a vPC pair with several FEXes connected. We need to upgrade them to a newer software version due to a few bugs we’ve encountered.
I was wondering what the recommended upgrade approach would be. Would you upgrade the secondary vPC switch first, let it rejoin the vPC domain, and then proceed with the primary switch (No ISSU available, disruptive mode).
Also, what’s the best way to verify that all servers and other connected devices are dual-homed across both vPC peers so we can minimize any service disruption during the upgrade?
I’d really appreciate any advice or best practices. Thanks!