We have a CISCO router connected its fastethernet to a SDH and all configuration we received from the SDH owner is a "/30" network. Someone there have pointed all my networks to "xxx.yyy.zzz.30/30" and the router points it default gateway to "xxx.yyy.zzz.29/30" which is working well.
But I would like to move this router to a MT one, so I did the same. Put the IP "xxx.yyy.zzz.30/30" on a ethernet interface and have pointed the default gateway to "xxx.yyy.zzz.29/30". This just wont work! Dunno why... Am I missing some special configuration? Traffic only go out throug the default gateway, but does not return.
Didnt know what I am missing to get it working. Pls, help.