Sample Configuration of 3 links

[sourishzzz1234@gmail.com]

Please guide how to configure the 3 links on a CISCO 1905 Router as backup in the following order->MPLS1(primary)->MPLS-2(secondary)-> VSAT(tertiary)...

MPLS-1 on Serial Interface-Se0/0/0

MPLS-2 on Router Gigabit port-Ge0/1

VSAT-1 on Switch port CISCO 2960- say Fa0/13(no bgp)

At present we are able to set a backup on any one of the interfaces Se0/0/0 or Gi0/1 but in case of failure of the link on whose interface the tertiary link is set, 2 links are active simultaneously.

[Georg Pauwen]

Hello,

you can use tracking and possibly an EEM script with conditional boolean operators. Post the full config of your router...

[Georg Pauwen]

Hello,

here is a sample configuration using static routes. The first static route is for the primary link, the secondary static for the secondary, the third static route for the tertiary link. The logic is: if link 1 fails, link 2 takes over. If both links fail, link 3 takes over.

IP addresses are obviously arbitrary, yours will be different. IP SLA 1 tracks your primary link, IP SLA 2 tracks the secondary link.

track 1 ip sla 1 reachability
!
track 2 ip sla 2 reachability
!
track 3 list boolean or
object 1
object 2

!

ip route 0.0.0.0 0.0.0.0 192.168.12.2 track 1
ip route 0.0.0.0 0.0.0.0 192.168.13.3 track 2
ip route 0.0.0.0 0.0.0.0 192.168.14.4 250
!
ip sla 1
icmp-echo 192.168.12.2 source-interface GigabitEthernet0/0
frequency 5
ip sla schedule 1 life forever start-time now
ip sla 2
icmp-echo 192.168.13.3 source-interface GigabitEthernet0/1
frequency 5
ip sla schedule 2 life forever start-time now