How do do port channels on a 3750 stack?

joerggrau · ‎06-15-2010

I have a couple of 3750 stacks.

I am trunking them together (I am runnign BGP on each of them with seperate providers and AS numbers...)

I am trying to set up some redundancy int he trunks so should one of the 3750s fail, the trunk will remain up. I tried to set up a port channel group (L2 Ether Channel) across the two blades (one port on 3750 A and one on 3750 B), but that seems to be illegal.

Does anybody know how I can configure a L2 port channel across a 3750 stack? Or something similar that achieves redundancy?

thanks

Joerg

Jon Marshall · ‎06-15-2010

Joerg

Have you used this doc as a config guide -

3750 cross stack ethercherchannel

Jon

Ganesh Hariharan · ‎06-16-2010

I have a couple of 3750 stacks.

I am trunking them together (I am runnign BGP on each of them with seperate providers and AS numbers...)

I am trying to set up some redundancy int he trunks so should one of the 3750s fail, the trunk will remain up. I tried to set up a port channel group (L2 Ether Channel) across the two blades (one port on 3750 A and one on 3750 B), but that seems to be illegal.

Does anybody know how I can configure a L2 port channel across a 3750 stack? Or something similar that achieves redundancy?

thanks

Joerg

Hi Joerg,

Check out the below link also with sample example and configuration of etherchannel in 3750 switches.

http://docs.google.com/viewer?a=v&q=cache:SDcW6L7vPgYJ:https://www.cisco.com/application/pdf/paws/69979/cross_stack_etherchannel.pdf+sample+etherchannel+configuration+3750+stack&hl=en&gl=in&pid=bl&srcid=ADGEESi375x_AXG01ePZBL-54nmxS7HOMs5LgkjUpQXGfl-...

Hope to Help !!

Ganesh.H

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