Most likely a silly question about EtherChannels

[laruecl]

Ok, here goes. I am being asked to possibly create an etherchannel in this topo

Switch 1 connects to switch 2 via gig link

Switch 1 connect to switch 3 via 100mb link

Switch 2 connect to switch 3 via gig link

I don't believe it is possible, but the request is to connect switch 1 to the two remote switches via etherchannel. Because the connections from switch 1 are terminating on two different switches and are two different bw's I don't believe this is possible. But, I am wondering if anyone has seen something similar to this and if there is a way to make it work?

[gpulos · Accepted solution]

You're correct,

You cannot create an etherchannel with two dissimilar Link Speeds or Media Types.

You can create two separate etherchannels. One from SW1 >> SW2 with 2-8 1gb ports &

One from SW1 >> SW3 with 2-8 100mb ports

Please see the following link for more information on etherchannel:

http://www.cisco.com/en/US/tech/tk389/tk213/tsd_technology_support_protocol_home.html

[laruecl]

Thank you!

[benhanson]

I don't think you are talking about this, but if you had 2 6500's with VSS you can actually have an etherchannel group that spans 2 physical switches, though the port speeds would likely still need to be the same.