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3750 Stack to 3750 Stack 10GB and 1GB Connections

I have two 3750 stacks that are currently connected using two1GB fiber connections in an etherchannel. I now added new switches to each stack with 10GB modules in them. We would like to bring up the 10GB connection, but still have one of the 1GB lines as a backup, or even the whole etherchannel. Is there a way for us to make the 10GB the main and the 1GB the standby?

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Bronze

3750 Stack to 3750 Stack 10GB and 1GB Connections

Sure. It is called Spanning-tree Protocol MSTP is a best way, I think. There are many other ways to do it, including L3 dynamic routing.

Community Member

3750 Stack to 3750 Stack 10GB and 1GB Connections

STP would prefer the links based on cost calculation.

If these are L3 links, then use routing for failover.

Super Bronze

3750 Stack to 3750 Stack 10GB and 1GB Connections

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STP and routing are the "usual suspects", but another L2 option might be Flex Links.

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