ISDN dial backup

[daniel.kline]

I am trying to determine if there is a way to cause a, ISDN dial backup circuit to timeout if there is no interesting traffic sent for a period of time. That is, have the ISDN dial backup activated when it sees interesting traffic, and then deactivated after the interesting traffic subsides.

Any suggestions would be appreciated.

Dan

[thisisshanky]

The idle-timeout is designed for this purpose.

Dialer idle-timeout (under bri or dialer interface).

[daniel.kline]

Thanks, Shanky.

[dbellazetin]

Another thing to keep in mind is you may want to explicitly define what traffic is interesting. You don't want un-wanted traffic triggering the line or keeping it nailed up (routing updates, etc).

http://www.cisco.com/warp/public/471/idle_timeout.html#7

This doc shows some examples of idle timers and specifying interesting traffic.

Daniel

[daniel.kline]

Thank you, Daniel. I had considered creating the appropriate ACL to define interesting traffic and applying it to the dialer list. Thank you for the link.

Dan