05-18-2009 02:58 AM - edited 03-04-2019 04:47 AM
Hello Experts,
We experience the OSPF Fluctiations every 32 Minutes i.e. configured between PE & 'CSC' Router.
Note: It's a CSC Setup.
Few points are:
----------------
1) Last Mile is Healthy
2) OSPF Configuration are Fine
3) No MTU Related issues.
Can someone help in identifying the exact cause for the same.
Best Regards,
Guru Prasad R
05-18-2009 04:18 AM
Hello Guru,
each OSPF LSA is refreshed by the original owner every 30 minutes on average, (LSA group pacing waits to collect a group of LSAs to refresh).
A new version of LSAs trigger a SPF recalculation and this might explain what you see.
Hope to help
Giuseppe
05-18-2009 05:22 AM
Hello Giuseppe,
Thanks for the Reply.
I tried 'LSA Group Pacing' in CSC Router, but the problem was continue to be existing.
Any more help, would be really Appreciable.
Best Regards,
Guru Prasad R
05-18-2009 05:36 AM
Hello Guru,
I would suggest you to better define the problem:
what do you mean with OSPF fluctuations?
I may guess you can experience temporary loss of MPLS connectivity but it is a wild guess.
In this case you can try to play with LDP synchronization
see
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fsldpsyn.html#wp1054554
on in the field of MPLS LDP graceful restart
Hope to help
Giuseppe
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