minimum configurations needed for etherchannel

[sarahr202]

hi every body!

let say I have two switches ,sw1 and sw2

I want to use etherchannel

sw1(config) int f0/1

sw1(con-if)channel-group 1 mode desirable.

Assuming the sw2 has similar configuration in place, would the etherchannel form? or Do I need to use"channel-protocol pagp" command?

thanks a lot!

[Edison Ortiz · Accepted solution]

would the etherchannel form?

Yes.

Do I need to use"channel-protocol pagp" command?

It's not required. This command ensures that the only protocol acceptable in the etherchannel is PAgP.

For instance, if you were to configure active<->passive along with channel-protocol pagp, then the channel wouldn't form.

HTH,

__

Edison.

[Jon Marshall · Accepted solution]

Sarah

For a layer 2 etherchannel you only need the config you supplied ie.

sw1(config) int f0/1

sw1(con-if)channel-group 1 mode desirable.

the port-channel interface is automatically created for you.

For L3 etherchannels you need to manually create the port-channel interface and then assign the ports into the corresponding channel-group.

Jon