on both routers


track 1 ip route 20.10.1.0 255.255.255.0 reachability
!
!
!
interface FastEthernet0/0
 ip address 180.40.7.129 255.255.255.224
 ip policy route-map Prob1
 duplex auto
 speed auto
 glbp 1 ip 180.40.7.132
 glbp 1 weighting track 1 decrement 1
!

R3#