etherchannel or stp

[carl_townshend]

Hi all

If someone said that there were 2 links between 2 switches, and both links must be used, switch A must control activation.

are we talking etherchannel here, dynamtic/auto setup ?

cheers

[Peter Paluch]

Hi Carl,

The EtherChanel is the most obvious answer here, and it would be a correct answer. But I believe that even STP could be used for this if you used PVST or MSTP, and used the port-priority commands on the root switch to force the neighboring switch to select different root ports for different VLANs or MSTP instances. Obviously, there is a difference: the Etherchannel would have both links forwarding for all VLANs, the STP would have selected links forwarding for selected VLANs.

Best regards,

Peter