From: cciestudy (cciestudy@mid-world.net)
Date: Fri Aug 08 2008 - 12:43:18 ART
I believe you are correct. Turning off keepalives just stopped the
interfaces from going errdisable. I believe turning on STP over the q-in-q
tunnel was the fix.
SW4 F0/19, f0/21, f0/13, f0/15
L2protocol-tunnel stp
From a Layer 2 standpoint this lab made my head spin.
_____
From: Igor Manassypov [mailto:imanassypov@rogers.com]
Sent: Friday, August 08, 2008 10:35 AM
To: cciestudy; 'Igor Manassypov'; 'GS CCIE-Lab'
Subject: RE: IE Lab 20
Hmm, whats the mechanism behind the interface keepalives that triggers the
interface to shutdown? Besides, I really doubt that just by disabling the
interface keepalive you avoid the loop, its just might stop going into
errdisable but the loop will still occur if there is one (?)
cciestudy <cciestudy@mid-world.net> wrote:
I finished that lab a few weeks ago. All I can say is it was a bugger to
solve. The IE message board has some good insight into why it was
occurring. I believe turning off interface keep-alives resolved the looping
problem. I believe it was SW4, F0/13, F0/15, F0/19, F0/21. Also, I tried
doing L2protocol-tunnel on STP also...
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Igor
Manassypov
Sent: Friday, August 08, 2008 9:58 AM
To: GS CCIE-Lab
Subject: IE Lab 20
Hi Gang,
Has anyone done internetwork expert's lab 20 recently? I am having a hard
time on the first section with STP where it keeps flipping interfaces to
err-disabled mode due to 'loopback error'. I am wondering if anyone was able
to solve it.
Thanks!
Igor M., M.Eng, P.Eng
Network Architect
Blogs and organic groups at http://www.ccie.net
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