we have two site connected over MPLS (PRI) and ISDN (BACKUP). today the MPLS connection went down and accordingly ISDN dialed and connected but something strange happened, on the remote site as well as HO site it was showing connected and i could even telnet from HO to remote site on the dialer ip address, still i could not ping the local interfaces of both each or any other machine inside the networks from one another.
When i check the ip route i found that EIGRP didn't changed routes and thus both routers although were connected through ISDN but still no exchange of routes were happening.
the remote router has identical configuration as the other remote router has and the other one works prefectly if the PRI link fails.
any one has any idea what it could be? any help would be really helpful
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