[c-nsp] Etherchannel between 2x2960 and 1x7600

Peter Rathlev peter at rathlev.dk
Tue Aug 11 07:32:07 EDT 2009


On Tue, 2009-08-11 at 13:14 +0200, luismi wrote:
> I would like to know if it is possible to create an etherchannel
> between just 1 router 7600 and 2 switches 2960 connected between them
> by a trunk.
> 
> The schema would be....
> 
> 2960-------\
> |           \
> Trunk       FEC----7600
> |           / 
> 2960-------/
> 
> Is it possible?

No.

Bundling interfaces in port-channels is only possible between exactly
two distinct STP nodes since port-channels break the split-horizon rule
(sort of, on a physical interface level).

What would you achieve by this? There might be another solution to your
needs.

Regards,
Peter




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