Etherchannel disabled = spanning tree loops...

Discussion in 'Cisco' started by traust, Feb 21, 2006.

  1. traust

    traust Guest

    Hello.. I noticed and thought I would post to save any other people
    time!

    If you have Etherchannel configured as mode on on your core and you
    drop one of your edge devices out of etherchannel you easily create a
    loop.

    Without PAgP or LACP configured both the Po and the physical link go
    into FWD state.. this is also true if you drop all your physicals out
    of the etherchannel.

    The only way around this I can find is to NOT use [mode on] on your
    core... in fact don't use it anywhere.

    Anyone know why it's there? Non-Cisco non-LACP perhaps??
     
    traust, Feb 21, 2006
    #1
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