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Cisco: Default static routes with different administrative distances
I have a Cisco router that has two default routes configured:
ip route 0.0.0.0 0.0.0.0 10.1.236.6 250
ip route 0.0.0.0 0.0.0.0 10.1.35.5 254
The question I have is why is the default route with a AD of 250 showing up in the routing table when it seems that the other default with the AD of 254 should show up in the routing table to be used as the default route?
Here is a copy of the show ip route display:
R3# 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 10.1.236.6 to network 0.0.0.0
S* 0.0.0.0/0 [250/0] via 10.1.236.6
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
S 10.1.1.1/32 [1/0] via 11.1.1.1
C 10.1.3.3/32 is directly connected, Loopback0
C 10.1.35.0/24 is directly connected, Serial4/0
L 10.1.35.1/32 is directly connected, Serial4/0
C 10.1.123.0/24 is directly connected, Ethernet0/0
L 10.1.123.3/32 is directly connected, Ethernet0/0
C 10.1.236.0/24 is directly connected, Ethernet0/1
L 10.1.236.3/32 is directly connected, Ethernet0/1
11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 11.1.1.0/24 is directly connected, Tunnel23
L 11.1.1.3/32 is directly connected, Tunnel23
32.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 32.0.0.0/24 is directly connected, Tunnel0
L 32.0.0.3/32 is directly connected, Tunnel0
R3#
Here is a copy of the run config | s route:
R3#sh run | b route
ip route 0.0.0.0 0.0.0.0 10.1.236.6 250
ip route 0.0.0.0 0.0.0.0 10.1.35.5 254
R3#
ip route 0.0.0.0 0.0.0.0 10.1.236.6 250
ip route 0.0.0.0 0.0.0.0 10.1.35.5 254
The question I have is why is the default route with a AD of 250 showing up in the routing table when it seems that the other default with the AD of 254 should show up in the routing table to be used as the default route?
Here is a copy of the show ip route display:
R3# 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 10.1.236.6 to network 0.0.0.0
S* 0.0.0.0/0 [250/0] via 10.1.236.6
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
S 10.1.1.1/32 [1/0] via 11.1.1.1
C 10.1.3.3/32 is directly connected, Loopback0
C 10.1.35.0/24 is directly connected, Serial4/0
L 10.1.35.1/32 is directly connected, Serial4/0
C 10.1.123.0/24 is directly connected, Ethernet0/0
L 10.1.123.3/32 is directly connected, Ethernet0/0
C 10.1.236.0/24 is directly connected, Ethernet0/1
L 10.1.236.3/32 is directly connected, Ethernet0/1
11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 11.1.1.0/24 is directly connected, Tunnel23
L 11.1.1.3/32 is directly connected, Tunnel23
32.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 32.0.0.0/24 is directly connected, Tunnel0
L 32.0.0.3/32 is directly connected, Tunnel0
R3#
Here is a copy of the run config | s route:
R3#sh run | b route
ip route 0.0.0.0 0.0.0.0 10.1.236.6 250
ip route 0.0.0.0 0.0.0.0 10.1.35.5 254
R3#
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