From: Feliz, Edgar (Edgar.Feliz@xxxxxxxx)
Date: Sat Aug 19 2000 - 22:37:57 GMT-3
Thanks,
I will try this tomorrow when I do this lab.
EF
-----Original Message-----
From: Arne Kuhlmann [mailto:ccie-lab@arne.de]
Sent: Saturday, August 19, 2000 3:55 PM
To: ccielab@groupstudy.com
Subject: OSPF Demand Circuit (solution)
Hi y'all,
there have been numerous threads in the past dealing with OSPF demand
circuit
problems. Keeping the ISDN line quiet was the big problem.
I was just working on ccbootcamp lab 8a and have found a very simple
solution to
make it work.
When you use PPP as the line protocol, it will automatically install a host
route in your routing table when the interface goes up.
All you have to do to prevent this is a
interface bri0
no peer neighbor-route
and your interface will connect, then disconnect after the idle-timeout and
stay
down.
If you don't use the 'no peer neighbor-route' command the hostroute will be
installed and then removed when the interface goes down - causing a link
state
change and then of course ospf will cause it to dial again because of the
LSA.
Then it will time out again, LSA, dial, time out, in an endless cycle.
It's not neccessary to set any filters for OSPF packets, or move the BRI
interface to a stub area, etc.
Sometimes the solution to a big problem is indeed very simple...
HTH,
Arne Kuhlmann
San Jose, Nov. 18th
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