Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

EIGRP hello and update bringing the ISDN link up

Core Issue

Any interesting IP traffic, if not explicitly denied on a dialer list, brings up the dialer interface. Enhanced Interior Gateway Routing Protocol (EIGRP) hellos and updates act as interesting traffic and initiate an ISDN connection on a BRI if not explicitly denied in the interesting traffic list.


Configure the ISDN as a backup link and configure the BRI or PRI interface(s) as passive interfaces under the respective routing protocol configuration, in this case EIGRP. Then configure a floating static route pointing to the BRI or PRI interface.

For more information, refer to Sample Configuration: Using Floating Static Routes and Dial-on-Demand Routing.

Version history
Revision #:
1 of 1
Last update:
‎06-22-2009 05:06 PM
Updated by:
Labels (1)
Everyone's tags (4)