We have a remote 1760 with a T1 and DSL backup. It uses BGP for routing. It has route maps for the default route and backup path,
router bgp 65000
no synchronization
bgp log-neighbor-changes
network 10.0.7.0 mask 255.255.255.0
neighbor 10.254.1.129 remote-as 33000
neighbor 10.254.1.129 soft-reconfiguration inbound
neighbor 10.254.1.129 distribute-list 2 out
neighbor 10.254.1.129 route-map default in
neighbor 10.254.1.129 route-map bk out
neighbor 10.20.30.3 remote-as 44000
neighbor 10.20.30.3 allowas-in
neighbor 10.20.30.3 soft-reconfiguration inbound
neighbor 10.20.30.3 distribute-list default in
neighbor 10.20.30.3 distribute-list 2 out
no auto-summary
ip access-list standard default
permit 0.0.0.0
!
access-list 2 permit 10.0.7.0 0.0.0.255
!
route-map bk permit 10
set as-path prepend 65000 65000 65000 65000
!
route-map default permit 10
match ip address default
set as-path prepend 33000 33000
This setup is used by multiple clients and works just fine. However for this one client, it works, but it does not revert the default route. If the T1 drops, which is primary, 10.20.30.3, then the routing all swings to the DSL, this part works fine. When the T1 comes back up, and the neighbor reestablishes, all but the default route swings back to the primary. We have to either shut the DSL down, or shut the neighbor down for the route to go back. Could this be revision of the 1760 or IOS issue?
