Interface ATM DOWN and Dialer UP

[kanno]

Hi ...

I have a 2801 with an ADSL module. It was working fine, but it stopped (suddenly) from getting IP address (dynamic IP configuration), logging the following message on console (interface is going up/down indefinitely):

Sep 6 13:08:41.388: %DIALER-6-UNBIND: Interface Vi1 unbound from profile Di1

Sep 6 13:08:41.392: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to down

Sep 6 13:09:03.596: %DIALER-6-BIND: Interface Vi1 bound to profile Di1

Sep 6 13:09:03.600: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up

The most curious is interface Dialer 1 being with line and protocol UP, when the cable from ISP is out of ADSL interface (ATM interface goes DOWN with no cable attached).

May it be a physical problem?

[thomas.chen]

check if your dialer group is configured, and then the password are also configured correctly

[Richard Burts]

I can not say whether your problem is a physical problem or not. I can comment on your question about the Dialer interface being up and up even when the physical interface is down. It is in the design of dialer interfaces that they will claim that they are up and up even when the physical media is not working. The reasoning for that is primarily to be able to keep the subnet of the dialer in the routing table (so that data will be routed through the dialer interface) even if the dialer is not connected.

So the fact that your dialer inteface shows up and up even when the physical media is not working is normal and not a problem.

HTH

Rick

[dbellaze]

If your interface is bouncing its probably an authentication issue.

The following debug should be able to show you where the failure is occuring.

debug ppp neg

Daniel