I have 3662 central router and 150 branched on FR links HUB and spoke config.
branche routers will only have default route to the HO router.
I need PSTN dial ackup for the FR link.
Also, I need the dial backup link to be kept activated irrespective of the interesting traffic. I need the backup linkto stay up untill primary FR link comes back.
I am trying with dialer-watch to watch the default route. I also defined a static default route with higher ad. distance to router traffice in the dial-back scenario.
This method has two problems.
1. Once the primary ois down, backup link is activated, but after short duration, the line is reset and re-dials.
2. If the primary link is down when the router powered- on. Then the routing table has static default route, hence router wil never dials to initiate the connection.
What is the best method to achieve the requirements ?