routing loop help!

[soklamarhy]

I have a routing loop.

tracert 10.121.62.1 which is the offsit location, loops between two routers here on the main site.

when I try to ping a known IP, I get a TTL expired on transit.

I phoned our provider, everything is set on their end. nothing has changed on either routers. what else could be the cause?

[Edison Ortiz]

If they can't hit the CSU, nothing I can suggest in terms of router config can help here. The only thing I want to remind you is to verify the default route to that broadcast address, that is wrong.

[jackyoung]

According to the config. The 10.121.62.1 should be learn via EIGRP if the looping is occured at the serial. Otherwise, the looping may be at the LAN side.

Please provide the routing table (sh ip route) at both sides and the config. at remote side then we know the problem. And also please provide the trace route result for reference.

Above is only assume there is software problem. If it is a hardware problem then you have to work w/ your provider.

Hope this helps.