On Wed, 2010-05-12 at 19:29 +0300, shake righa wrote: > Output from show ip ospf interface are as folows > > FastEthernet0/0 is up, line protocol is up > Internet Address <<<loopback ip >>>, Area 0 ^ This isn't an unnumbered interface by any chance? Or is that just a typo? What about MTU on both sides? And what does the other end say? -- Peter