l2 tunnel

From: John (jgarrison1@austin.rr.com)
Date: Thu Jan 24 2008 - 15:54:59 ARST

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I'm curious as to why this is happening, again I'm missing some logic.

SW1 connects to SW3 through 3 trunk interfaces f0/16-18. I make f0/16 a dot1q
tunnel. I get connectivity(iti works the way it's supposed to. I was also
supposed to shut f0/17-18. I didn't.

Now I add an l2 cdp tunnel to f0/16 and the port goes into err disable. I
shut f0/16-18 and then no shut f0/16 works. I know its STP but I can't see
the logic and since I'm on rack time I'm not gonna look up the awnser till
after I'm done.

Any help would be greatly appreciated

JG

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