Adding VLAN to Port-Channel

[upen desai]

Hello

I hope you can answer a quick question for me.

I have a set of 3750 with Port-Channel setup between them. 

Port-Channel is protocol is set to 'ON'

I need to add more vlans to this port-channel.

can you please advise if it will cause any interruption to the links, e.g will they flap

many thanks

[Muthurajeshwaran Natesan · Accepted solution]

Hi,

AFAIK it shouldn't cause any flap. When you add new vlan, only the CBL state of the vlan will change.

Ideally you will not see any link flap or port-channel flap.

When you add vlan use the below command:

"switch-port trunk allowed add vlan <> "

Thanks,

Muthu.

[upen desai]

Thank you Muthu

I had a feeling that would be the case, just wanted to make sure.