OSPF Routes Are Not Installing At CPE Router

One of my friend reports a problem regarding routes installation at CPE end. OSPF is running between PE-CE but CE is not able to receive any of the routes. During analysis he found network lsa bit is coming as zero in the updates. After this he might thought this can be the issue with the CEP end router but as the day grows, the problem started with the customers who are using OSFP as PE-CE. This time problem is with the SP router not with the client end router or IOS and the router used by service provider is 7200. Temporary workaround of this problem is to clear the ospf process at PE end thereafter everything works fine.

regards
shivlu jain

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