Refer to the exhibit. After implementing the configuration, 172.20.20.2 stops replying to ICMP echos, but the default route fails to be removed. What is the reason for this behavior?
A.
The threshold value is wrong.
B.
The source-interface is configured incorrectly.
C.
The destination must be 172.30.30.2 for icmp-echo.
D.
The default route is missing the track feature.
Firstly, you need to know what track static route could do. If the link goes down, then the route with track will tell router to remove this from routing table because it is not usable now.
Then the question misleading as well, it is not the config turning down the ICMP. It actually want to ask once the link 1 down, why it doesnt goes to link 2. The reason is the config static route with no track feature, so the route will keep it in routing table causes connection drop.
The question setup is misleading. I thought for a while that echo failed due to the configuration. I think what is meant is that the ping fails somewhere between putting the configuration and present time.
cisco_R3#show track
Track 1
IP SLA 1 state
State is Down
1 change, last change 00:04:01
Latest operation return code: No connection
Tracked by:
Static IP Routing 0
cisco_R3#show ip route track-table
ip route 0.0.0.0 0.0.0.0 2.2.2.2 track 1 state is [down]
cisco_R3#
cisco_R3#sh runn | s ip rou
ip route 0.0.0.0 0.0.0.0 2.2.2.2 track 1
...
cisco_R3#
cisco_R3#show ip route static | b Gate
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks
S 172.16.1.0/24 is directly connected, Ethernet0/0.30
S 192.168.1.0/24 is directly connected, Ethernet0/0.20
cisco_R3#
UP status:
cisco_R3#show ip route static | b Ga
Gateway of last resort is 2.2.2.2 to network 0.0.0.0
S* 0.0.0.0/0 [1/0] via 2.2.2.2
...
cisco_R3#
cisco_R3#show ip route track-table
ip route 0.0.0.0 0.0.0.0 2.2.2.2 track 1 state is [up]
cisco_R3#
cisco_R3#show ip sla summary
IPSLAs Latest Operation Summary
Codes: * active, ^ inactive, ~ pending
ID Type Destination Stats Return Last
(ms) Code Run
-----------------------------------------------------------------------
*1 icmp-echo 2.2.2.2 RTT=3 OK 2 seconds ago
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