I don't know if I'm understanding correctly, but I think that if you use dialer interfaces it would work (backup int dialer instead back int bri0) Edward Sohn wrote: > > Hello, > > I have two 2503 routers connecting together via ISDN through a > Teltone > ILS-2000. > > I *believe* that the ILS is configured correctly, as well as my > SPIDs > and DNs on my routers. I set the "backup interface BRI0" on > the calling > router, and it's verified in standby mode (sh ip int brie). I > tear down > the s0 interface (frame relay) and the call comes up, no > problem. OSPF > reconverges, and I receive the routes through the ISDN > connection. > > Now, the weird thing (if it's considered that), is that the > called > router CANNOT have the backup interface command. Because if it > does, > the call NEVER comes up. Once I take out that statement, > however, the > call comes up immediately. > > Now, I guess my question/issue is: can't the called router be > in "backup > interface" mode as well as the calling router? I seem to have > run > across many lab situations where both sides needed to be able to > initiate the call, but I can't seem to get it to work that way > (case in > point: Solie's CCIE Practical Labs I). > > I've been busting my brain trying to figure this out. I *may* > have my > Teltone configured wrong, but I don't think so. It could also > be my > ISDN spids, etc, but if the call comes up and the link > establishes up to > layer 3, doesn't that prove that all those configurations are > correct? > And that there is some issue about the backup interface > commands? > > I can't seem to find anything on CCO regarding having both > routers > configured for DDR or not...Someone, please shed some light on > this > situation. > > thanks, > > Eddie > > [GroupStudy.com removed an attachment of type image/jpeg which > had a name of Notebook.jpg] > >
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