IP SLA Tracking For Connectivity with Multiple WAN Links

[fazleabbas khanbahadur]

Hi,

I want to configure Reliable static routing with object tracking. I have a cisco 3825 and 3925 router in which the hsrp will be configured . Now these two routers are connected a remote site via three different WAN connectivity as under

1. MPLS

2. LL-1

3. LL-2

The priority of routing is also the same sequence.

Now if the MPLS goes down the remote site should be connected via LL-1. If both the MPLS and LL-1 goes down the remote site should be connected via LL-2.

The LL-1 is terminated on cisco 3825 and LL-2 is terminated on cisco 3925. MPLS is terminated on both cisco 3825 as well as 3925 router.

Whether multiple tracking  options are available so that i can achieve the same.

Topology diagram is attached.

Regards

Fazleabbas

[Edison Ortiz]

You should look into PfR

http://docwiki.cisco.com/wiki/PfR:Home

Regards,

Edison

[fazleabbas khanbahadur]

Hi Edison,

Thanx for the reply. Policy feature routing is gr8 feature. Just wanted to know in my setup i am using static routing on 3825, 3925 and 1841 router. I dont want to load balancing of traffic, but if the MPLS connectivity goes down the 1841 should get connected via LL-1 and if LL-2 goes down it should get connected via LL-2 which is connected on 3925.

My concern is i have seen reliable static routing with object tracking with two WAN connectivity, but if  three WAN connection are available how to achieve that

What i was planning to do is create two ip sla's

ip sla monitor 1
type echo protocol ipicmpecho 200.x.x.1                     // Public IP of 1841 router on MPLS connectivity
ip sla monitor schedule 1 start-time now life forever

frequency 3

!
ip sla monitor 2
type echo protocol ipicmpecho 172.16.2.1                 // Leased Line-1 IP of 1841 router
ip sla monitor schedule 2 start-time now life forever

frequency 3
!
track 123 rtr 1 reachability
track 124 rtr 2 reachability

ip route 172.16.4.0 255.255.255.0 200.x.x.4 track 123              // to MPLS

ip route 172.16.4.0 255.255.255.0 172.16.2.1 track 124 10        // to LL-1

ip route 172.16.4.0 255.255.255.0 172.16.1.10 20     // traffic will be forwarded to router 3925

Regards

Fazleabbas

[Edison Ortiz]

Your config should work based on the info provided.