Most likely a silly question about EtherChannels

Answered Question
May 8th, 2008

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?

I have this problem too.
0 votes
Correct Answer by gpulos about 8 years 6 months ago

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

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Correct Answer
gpulos Thu, 05/08/2008 - 13:54

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

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