why is the dialer interface stays up when the atm is down?

[blacktulip]

i need the dialer to go down when the atm goes down.

[Richard Burts]

Gil

The question in the header of your message asks why the dialer stays up and I have an answer to that. You then state a requirement for the dialer to go down when the atm goes down. I do not have an authoritative answer for that.

The dialer stays up when the underlying media goes down so that the dialer will still appear to be available. You want the dialer to still appear to be available so that the route to the subnet of this interface will remain in the routing table (so that things like floating static routes can work).

I have not used it for this and do not know for sure whether it would work for you or not, but you might look into Enhanced Object Tracking as a way to force the interface down if connectivity through the underlying media is lost.

HTH

Rick

[GIANRICO FICHERA]

This conversation is very old but the question is still relevant.

In general, if you have dialer interfaces related to interfaces such as ATM with PPP or ethernet with PPPoE or other you may have this problem. One possible solution is use the track command.
Here is an example:

track 10 interface Dialer0 ip routing
  delay down 5 up 30
track 11 interface Dialer1 ip routing
  delay down 5 up 30

ip route 0.0.0.0 0.0.0.0 Dialer0 track 10
ip route 0.0.0.0 0.0.0.0 Dialer1 track 11

Another solution is to use the command "dialer down-with-vInterface" if available in your IOS release.

Gianrico Fichera

[MHM Cisco World]

https://www.cisco.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/200466-Track-PPP-session-over-Dialer-interface.html#:~:text=A%20new%20CLI%20dialer%20down,the%20PPP%20session%20goes%20down.&text=Dialer%20interface%20is%20in%20up,the%20PPPoE....