i have a vvvv strange problem......and v confused abt it.....I have three routers 2503 which are connected directly to each other....the routers name is A,B,C........now i have put clocking on B on both serial interfaces......now the link is up all links are up and up (both line and physical)......the network between A and B is 192.168.1.0/24 and the network between B and C is 192.168.2.0/24.........now when i log into router b it does not ping the serial interface of A or C........which are on same network.......its v strange problem there is no access list nothing on it i have even deleted nvram and reloaded so its as fresh as a new router.......can some one please help me as i m going nuts on this problem.....the etehrnet of router b is fine it can ping the host the PC)...please help me out as i m v frustrated