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ujjwalkumar18894
Beginner

ISDN DDR Backup connection between BRI and PRI ?

I need to create a backup connection between the main server and a router in the office. We have BRI s/t card into the office router.

On the server side we have a PRI(30 channel) on the router. How do we connect both the sides using DIAL ON DEMAND routing so that when the main link fails we can use the ISDN route for backup.

So to put it straight forward i want to connect the BRI interface to the PRI interface using DDR.

We have MPLS as the main route.

Please someone help me get the configuration for this.

Thanks in advance...

2 REPLIES 2
Sandeep Choudhary
VIP Mentor

Hi Ujjwal,

Please check this link :

http://www.cisco.com/en/US/docs/ios/12_1/dial/configuration/guide/dcdmbri.html

dont forget to configure the isdn switch type command in Global config mode.

Regards

Please rate if it helps.

Hi Sandeep,

The link that you provided is useful but I also need the configuration of the PRI interface as I have to create a backup route from the BRI interface of multiple routers to the PRI interface of a single router present at the server location.

Please help me with this

Thanks in advance