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routing trouble

My network contains three router.router1 Has been confugured like that (eth1 and serial0/0:1 router2 (eth1 serial0/0:1 (eth0 eth1 Router1 and router are connected by a liason E1.Router2 and router3 are connected by a LAN.The thing is when I am on router three I can ping everything behind router1. When I am on router2 I can ping everythin behind router3 and router1. But when I am on router1 I can not ping nothing behind the interface but I ping this interface. I'd like someone help me what's wrong. I enabled rip and eigrp on all routers. Best regards


Re: routing trouble

There are a number of possibilities and all of them have to do with missing routes in the routing table. Enable debug ip icmp on the the routers and then try pinging. You will be able to figure out where the packets are forwarded and where they start getting dropped. It is likely that R1 does not have the routes to the destinations beyond