we configured DDR Backup over ISDN for an IPSec-connection using dialer-watch. We defined a route to be watched and also interesting traffic.
When the route is deleted from the routing table, the router dials the backup connection as intended and traffic is rerouted over the BRI-Interface.
But every 60 seconds, the router disconnects the call, checks for the primary route and then reestablishes the call.
Is this default behaviour? I would have expected the router to check periodically for the primary route, but i don't think it is necessary to tear down the call for this purpose.
Is there a timer setting which keeps the call up while checking for the primary route or anything similar.