步骤五：查看路由表
R1#show ip route à显示路由表，如下图显示证明验证通过D为eigrp路由
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
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
Gateway of last resort is not set
20.0.0.0/24 is subnetted, 1 subnets
D 20.1.1.0 [90/2681856] via 10.1.1.1, 00:12:39, Serial0
40.0.0.0/24 is subnetted, 1 subnets
D 40.1.1.0 [90/2809856] via 10.1.1.1, 00:12:39, Serial0
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Serial0
30.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 30.1.3.0/24 is directly connected, Loopback2
C 30.1.2.0/24 is directly connected, Loopback1
C 30.1.1.0/24 is directly connected, Loopback0
D 30.1.0.0/22 is a summary, 00:12:47, Null0 à汇总产生的空接口
R2#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
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
Gateway of last resort is not set
20.0.0.0/24 is subnetted, 1 subnets
C 20.1.1.0 is directly connected, Serial1
40.0.0.0/24 is subnetted, 1 subnets
D 40.1.1.0 [90/2297856] via 20.1.1.2, 00:13:13, Serial1
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Serial0
30.0.0.0/22 is subnetted, 1 subnets
D 30.1.0.0 [90/2297856] via 10.1.1.2, 00:10:02, Serial0 à学到了汇总的条目
R3#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
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
Gateway of last resort is not set
20.0.0.0/24 is subnetted, 1 subnets
C 20.1.1.0 is directly connected, Serial1
40.0.0.0/24 is subnetted, 1 subnets
C 40.1.1.0 is directly connected, Loopback0
10.0.0.0/24 is subnetted, 1 subnets
D 10.1.1.0 [90/2681856] via 20.1.1.1, 00:06:33, Serial1
30.0.0.0/22 is subnetted, 1 subnets
D 30.1.0.0 [90/2809856] via 20.1.1.1, 00:03:22, Serial1
