R1:-
interface FastEthernet0/0
ip address
12.12.12.1 255.255.255.0
no shut
ip route 0.0.0.0 0.0.0.0 12.12.12.2 track 10
ip sla 10
icmp-echo
12.12.12.2
ip sla schedule 10 life forever start-time now
track 10 ip sla 10 reachability
R2:-
interface FastEthernet0/0
ip address
12.12.12.2 255.255.255.0
no shut
verification:-
R1# show track 10
Track 10
IP SLA 10
reachability
Reachability is
Up
4 changes, last
change 00:02:43
Latest operation
return code: OK
Latest RTT
(millisecs) 18
Tracked by:
STATIC-IP-ROUTING 0
R1#
R1#sh ip sla statistics
Round Trip Time (RTT) for Index 10
Type of operation: icmp-echo
R1#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M -
mobile, B - BGP
D - EIGRP,
EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF
NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF
external type 1, E2 - OSPF external type 2
i - IS-IS,
su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS
inter area, * - candidate default, U - per-user static route
o - ODR, P -
periodic downloaded static route, H - NHRP
+ -
replicated route, % - next hop override
Gateway of last resort is 12.12.12.2 to network 0.0.0.0
S* 0.0.0.0/0
[1/0] via 12.12.12.2
12.0.0.0/8 is variably subnetted, 2 subnets,
2 masks
C
12.12.12.0/24 is directly connected, FastEthernet0/0
L
12.12.12.1/32 is directly connected, FastEthernet0/0
R1#
Latest RTT:
32 ms
Latest operation start time: *14:58:56.863 UTC Sat Apr 1
2017
Latest operation return code: OK
Number of successes: 5
Number of failures: 3
Operation time to live: Forever
R1#sh ip route 0.0.0.0
Routing entry for 0.0.0.0/0, supernet
Known via
"static", distance 1, metric 0, candidate default path
Routing
Descriptor Blocks:
* 12.12.12.2
Route metric
is 0, traffic share count is 1
R1#
Test1:- Remove Ip from R2
R2(config)#int fa0/0
R2(config-if)#no ip add
R2(config-if)#
Verification:-
R1# show track 10
*Apr 1
15:01:04.151: %TRACKING-5-STATE: 10 ip sla 10 reachability Up->Down
R1# show track 10
Track 10
IP SLA 10
reachability
Reachability is
Down
5 changes, last
change 00:00:10
Latest operation
return code: Timeout
Tracked by:
R1#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M -
mobile, B - BGP
D - EIGRP,
EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF
NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF
external type 1, E2 - OSPF external type 2
i - IS-IS,
su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS
inter area, * - candidate default, U - per-user static route
o - ODR, P -
periodic downloaded static route, H - NHRP
+ -
replicated route, % - next hop override
Gateway of last resort is not set
12.0.0.0/8 is
variably subnetted, 2 subnets, 2 masks
C
12.12.12.0/24 is directly connected, FastEthernet0/0
L
12.12.12.1/32 is directly connected, FastEthernet0/0
R1#
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