I am trying to repair two port channel groups on two of my switch stacks. Cisco created these, and I'm trying to avoid having to open a case again and wait for their help. the port channels were in use on my 9300 Catalyst, and also my 3850 10G switch as well - both linking to TEAMed NICs on a 2019 Server. They were connected and working fine. What I needed to to was swap the VLANs they were each using, for reasons related to backup software that runs on the server - so I needed to change subnets on each TEAMed port, and therefore change the IP addresses as well. When I swapped VLANs on the switch ports, both "TEAMS" remained disconnected, and the port channels became "suspended". All I know to try is using the shut / no shut commands to try and kickstart the ports in the channel groups, but that does not seem to work. I don't know the port-channel commands, in order to check their status, so I'm at a loss. I'm not sure why swapping VLANS would render them inoperable, but I'm looking for help from some experts now.
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