error disabled due to port-channel misconfiguration?

[g.eleftheriou]

Hi Everyone,

Recently one of my colleagues added a vlan on the physical links on WS-CBS301 (catalyst switch used in blades) and forgot to add it in the port-channel.

The result was that all downstream ports turned into error disabled due to misconfiguration. (we have also enabled link state tracking on the upstream interface). Since this is a production system, I cannot do any tests, but I would like your opinion if anyone has experienced like this before.

And what is the right way? add a vlan first to physical links and then to port channel or vice versa?

thanks,

george

[glen.grant]

  Any vlans would just need to be added to the port channel SVI on both sides , nothing needs to be added at the port level.  Try to do both sides as close together as possible to avoid any problems .  I would get 2 windows open , do one side then immedietly do the other side and you should not have an issue , we do it all the time.

[Leo Laohoo]

I would add new VLANs into the physical interface-level using the "range" subcommand.

Do the remote end first (furthest appliance away from you) and then do the local end.