Тут всё что тебе нужно :)ip sla monitor 1
type echo protocol ipIcmpEcho 213.180.204.11 source-interface FastEthernet0/0
timeout 2000 пингуем яндекс
threshold 2
frequency 3
ip sla monitor schedule 1 life forever start-time now
ip sla monitor 2
type echo protocol ipIcmpEcho 81.19.70.1 source-interface FastEthernet0/1
timeout 2000 пингуем рамблер
threshold 2
frequency 3
ip sla monitor schedule 2 life forever start-time now
track 123 rtr 1 reachability
!
track 124 rtr 2 reachability
ip route 0.0.0.0 0.0.0.0 194.84.хх.1 10 track 123 -- пров1
ip route 0.0.0.0 0.0.0.0 213.234.хх.161 20 track 124 --пров2
ip route 81.19.70.1 255.255.255.255 213.234.хх.161 -- это понимаете зачем :)
ip route 213.180.204.11 255.255.255.255 194.84.хх.1
ip nat inside source route-map ISP1NAT interface FastEthernet0/1 overload
ip nat inside source route-map ISP2NAT interface FastEthernet0/0 overload
access-list 110 permit ip 172.29.22.0 0.0.15.255 any
ну и это обязательно!
route-map tracking permit 10
set ip next-hop verify-availability 213.180.204.11 10 track 123
set ip next-hop 194.84.хх.1
!
route-map tracking permit 20
set ip next-hop verify-availability 81.19.70.1 20 track 124
set ip next-hop 213.234.хх.161
!
route-map ISP2NAT permit 10
match ip address 110
match interface FastEthernet0/1
!
route-map ISP1NAT permit 10
match ip address 110
match interface FastEthernet0/0
ВСЁ!