ISR_2#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, l - LISP
       a - application route
       + - replicated route, % - next hop override

Gateway of last resort is not set

      1.0.0.0/32 is subnetted, 1 subnets
C        1.1.1.1 is directly connected, Loopback0
      2.0.0.0/32 is subnetted, 1 subnets
O        2.2.2.2 [110/2] via 10.0.0.2, 00:16:36, GigabitEthernet0/0
      10.0.0.0/8 is variably subnetted, 10 subnets, 3 masks
C        10.0.0.0/30 is directly connected, GigabitEthernet0/0
L        10.0.0.1/32 is directly connected, GigabitEthernet0/0
S        10.5.14.0/24 [1/0] via 10.0.0.2
S        10.5.15.0/24 [1/0] via 10.0.0.2
S        10.5.16.0/24 [1/0] via 10.0.0.2
C        10.5.51.0/24 is directly connected, GigabitEthernet0/1
L        10.5.51.252/32 is directly connected, GigabitEthernet0/1
S        10.51.14.0/24 [1/0] via 10.5.51.250
S        10.51.15.0/24 [1/0] via 10.5.51.250
S        10.51.16.0/24 [1/0] via 10.5.51.250