[c-nsp] Core to access links. Use single etherchannel?

Grant Moerschel gm at wavegard.com
Wed Apr 23 09:09:11 EDT 2008


Greetings all. We have a 6509 core with dual trunked layer 2 access
switches connected on gig ports. So we use spanning tree in case one of
the core to access connections fails therefore one link is always
blocking. I'd like to get some opinions about improving this.  Is it a
viable and recommended option to instead portchannel those two gig ports
on both sides to both double the bandwidth and eliminate spanning tree
issues?  If so, on the core switch side should one gig link be on, for
example, 4/1 and the other on 5/1 in case a 6509 module fails? Thanks

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Grant P. Moerschel
gm -at- wavegard -dot- com
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