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New Member

Always on ISDN between two 1604 routers

We have a 2620 at the main site and (4) 1604s at remote sites. The 1604s are programmed to use dialer-map and sense when traffic for the other side is interesting and then create a connection. The ISDN lines are not metered and are flat rate. Can someone point me to a config for both sides where the ISDN connection remains on full time without the need to sense interesting traffic?

Cisco Employee

Re: Always on ISDN between two 1604 routers

One way is By configuring idle-timeout to max 2147483 secs with interesting traffic which will keep the line up for nearly 30 days even if no interesting traaffic passed..

Here is the link for that


Re: Always on ISDN between two 1604 routers

The best approach to take is to simply make all traffic interesting and define an idle timeout of 0. This will still require an interesting packet to dial in the event that the link goes down (for whatever reason), but once up it should stay up all the time.

The only way to get dialing without the need for interesting traffic is to use Dialer Watch, which is intended more for backup.

New Member

Re: Always on ISDN between two 1604 routers

try giving the command

config t

int bri0

dialer load-threshold 1 either

it wouls always keep the link up regardless of the load on it.

U need to give the command on only one router which dials the other

New Member

Re: Always on ISDN between two 1604 routers

Thanks to all for your responses!!