From: Carole Warner Reece (cwr@xxxxxxxxxxxxxx)
Date: Fri Sep 14 2001 - 10:05:24 GMT-3
Do you have 'ip ospf demand-circuit' on both sides of the link? If so, you
should
probably only use it one side.
The ip ospf demand-circuit should only be configured on one router for a
point-to-point circuit.
If it is placed on one interface (say, not the ASBR), then a simple
'dialer-list 1 protocol ip permit' allows the link to act as a backup
circuit for OSPF area 0 (connecting an ASBR to area 0.)
However, if 'ip ospf demand-circuit' is placed on both interfaces, then you can
see the kind of behavior you are mentioning.
Carole
------------------------------------------------------------------------
Carole Warner Reece, CCIE #5168
Mentor Technologies
http://www.mentortech.com
------------------------------------------------------------------------
At 10:38 AM 9/14/01 +0100, Fear, Russell H wrote:
>Can anyone in the group help me with thhe following problem.
>
>I have an ospf router which is redistributing igrp into area 0. It also has
>an isdn back-up as a demand circuit so that if the main connection to area 0
>dies, the isn kicks in and routes are still available. The problem is that
>the LSAs caused by the re-distribution bring up the link continually. If I
>block these, I block routing updates. I cant make the area a stub or an nssa
>because it is area 0 and has two other areas hanging off it.
>
>Am I missing something obvious ? It's been driving me mad. Help please .
>
>Russell
>
>* 700 2201 Internal
>* +44 ( 0 ) 870 238 2201 External
>* russell.fear@capgemini.co.uk
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