I'm facing an issue with IP SLA. I have three ISP in my router with the Tracking. All the tracking working fine if link goes down the tracking also down and link shifted to other ISP as per preference. but recently I have configured VPN over bgp and I advertised one static route and other is through redistributed. when I check the tracking after the VPN configuration, if the ISP goes down the tracking is still up until I shut the physical interface. I have my following IP SLA and BGP config. I also have the static route from ISP-B and ISP-D. The VPN is configured with ISP-A and ISP-B. Furthermore, I have configured the same VPN on my backup router. but there I have configured VPN with ISP-C 1st and 2nd with ISP-A and there is no static Route with ISP-B on Router 2. When I check the IP SLA on Backup Router the Tracking was down when the link goes down. The Router is ISR4431
track 20 ip sla 20 reachability
!
track 30 ip sla 30 reachability
!
track 40 ip sla 40 reachability
ip route 0.0.0.0 0.0.0.0 ISP-A 20 name Internet track 20
ip route 0.0.0.0 0.0.0.0 ISP-B 30 name Internet-Sec track 30
ip route 0.0.0.0 0.0.0.0 ISP-C 40 name Internet-Ter track 40
ip route 0.0.0.0 0.0.0.0 ISP-D 50 name Internet
ip sla 20
icmp-echo 8.8.8.8 source-interface GigabitEthernet0/1/0
frequency 70
timeout 10000
threshold 2
ip sla schedule 20 life forever start-time now
ip sla 30 icmp-echo 8.8.8.8 source-interface GigabitEthernet0/0/1
frequency 70
timeout 10000
threshold 2
ip sla schedule 30 life forever start-time now
ip sla 40
icmp-echo 8.8.8.8 source-interface GigabitEthernet0/0/2
frequency 70
timeout 10000
threshold 2
ip sla schedule 40 life forever start-time now
******* BGP **********
router bgp XXXX
bgp log-neighbor-changes
neighbor 172.18.10.2 remote-as XXXX
neighbor 172.18.11.2 remote-as XXXX
address-family ipv4
network X.X.X.X mask 255.255.255.248
redistribute static route-map ABC
neighbor 172.18.10.2 activate
neighbor 172.18.10.2 next-hop-self
neighbor 172.18.10.2 soft-reconfiguration inbound
neighbor 172.18.10.2 route-map PASS in
neighbor 172.18.11.2 activate
neighbor 172.18.11.2 next-hop-self
neighbor 172.18.11.2 soft-reconfiguration inbound
neighbor 172.18.11.2 route-map PASS in
exit-address-family
********** Route-MAP ***********
ip prefix-list AB seq 5 permit X.X.X.X/24
route-map ABC permit 10
match ip address prefix-list AB
Please if anyone has solution please let me know.
