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Which IP route configuration accomplishes these requirements for the customer?

Refer to the exhibit.

The customer wants to use IP SLA to create a failover to ISP2 when both Ethernet connections to
ISP1 are down. The customer also requires that both connections to ISP1 are utilized during normal
operations.
Which IP route configuration accomplishes these requirements for the customer?

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A.
ip route 0.0.0.0 0.0.0.0 192.168.0.1 track 1
ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 2
ip route 0.0.0.0 0.0.0.0 192.168.2.1 track 3

B.
ip route 0.0.0.0 0.0.0.0 192.168.0.1 track 1
ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 2
ip route 0.0.0.0 0.0.0.0 192.168.2.1 track 4 100

C.
ip route 0.0.0.0 0.0.0.0 192.168.0.1 track 1
ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 2
ip route 0.0.0.0 0.0.0.0 192.168.2.1 track 3 100

D.
ip route 0.0.0.0 0.0.0.0 192.168.0.1 track 1 1
ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 2 2
ip route 0.0.0.0 0.0.0.0 192.168.2.1 track 3 3

14 Comments on “Which IP route configuration accomplishes these requirements for the customer?

  1. Theo says:

    I think this is the complete config. Notice that the alternate route that should be used when the two primaries are down does NOT have a track statement. It doesn’t need to be tracked. It does need to have a higher admin distance though so it is only used when the first two are down.

    R1(config)# ip sla 1
    R1(config)# icmp-echo 192.168.0.1 source-interface FastEthernet0/0
    R1(config)# timeout 1000
    R1(config)# threshold 2
    R1(config)# frequency 3
    R1(config)# ip sla schedule 1 life forever start-time now
    R1(config)# track 1 ip sla 1 reachability
    R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.0.1 track 1

    R1(config)# ip sla 2
    R1(config)# icmp-echo 192.168.1.1 source-interface FastEthernet0/0
    R1(config)# timeout 1000
    R1(config)# threshold 2
    R1(config)# frequency 3
    R1(config)# ip sla schedule 2 life forever start-time now
    R1(config)# track 2 ip sla 2 reachability
    R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 2

    R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.0.1 track 1
    R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 2
    R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.2.1 100




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