Hi any one please help to clarify the following scenerio;
I have a remote site with 1720 router and connected back to HQ with a 2620 router there by a 64k leased line. There is a 64k ISDN backup link for the two sites.
The BRI interface is belonged to a member of a dialer profile. Once the primary link (64K leased line) fails, the ISDN will perform a DDR as a backup.
If I use the following static default route for the primary link;
1720(config)# ip route 0.0.0.0 0.0.0.0 220.127.116.11
whereby 18.104.22.168 is the ip address of the Serial interface of 2620 at HQ.
(1) what should include the routing for the ISDN link ?
(2) How do I differentiate the routings for Leased line and ISDN link ?
(3) At HQ do I need to specify "ip route 0.0.0.0 0.0.0.0 22.214.171.124" (whereby 126.96.36.199 is the ip address of 1720 serial interface) ?
(4) If I have more than one remote site connected to HQ, can I still use the routing as in (3) ?
Please help out.