We are having alittle bit odd problem in ISDN dialer authentication. We have r1 and r2 with isdn and pri lines terminated on them. We have configured many dialers on r2 ( on which PRI is terminted ) configuration of dialer is
ppp authentication chap
ip unnumbered loopback 0
dialer caller 234561
dialer-list 1 permit ip any
Similar dialer si created on other sode of roter. We have published loopback in ospf. So a call gets initiated and alos gets connected to other dialer. But remote host name is not seen .
When show isdn active command is given
is only shows connected number , time and time left. After 120 seconds call is dropped -- once again call gets initiaget but not authenticated and dropped.
We have such many dialers working fine and we r able to form ospf neighbor relationship on them. Only on this dialer this problem is coming.
We have tried debugging authentication.
It waits for authentication and stops. no challenge / reply / success or fail messages are coming. These will come if handshakin is taking place it may fail or success. But CHAP is not starting only. We tried with PAP but the same problem.
What could be problem ?
thankx in advance