兩個EIGRP AS系統左邊爲AS 50，右邊爲AS 100。
1，實現AS內部的互聯互通
2，在R3，R4上分別做默認路由
r3(config)#ip route 0.0.0.0 0.0.0.0 s1/0
r4(config)#ip route 0.0.0.0 0.0.0.0 s1/2
3，R3，R4上分別做靜態路由的重發布
r3(config)#router eig 50
r3(config-router)#redistribute static
r4(config)#router ei 100
r4(config-router)#redistribute static
4，驗證
r1#show ip rout
Codes: 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
Gateway of last resort is 13.13.13.3 to network 0.0.0.0
34.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D 34.34.34.0/24 [90/2681856] via 13.13.13.3, 00:25:22, Serial1/0
D EX 34.0.0.0/8 [170/2681856] via 13.13.13.3, 00:25:22, Serial1/0
1.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C 1.1.0.0/24 is directly connected, Loopback0
D 1.1.0.0/16 is a summary, 00:25:27, Null0
C 1.1.1.0/24 is directly connected, Loopback1
C 1.1.2.0/24 is directly connected, Loopback2
C 1.1.3.0/24 is directly connected, Loopback3
C 1.1.4.0/24 is directly connected, Loopback4
2.0.0.0/16 is subnetted, 1 subnets
D 2.2.0.0 [90/2809856] via 13.13.13.3, 00:22:53, Serial1/0
23.0.0.0/24 is subnetted, 1 subnets
D 23.23.23.0 [90/2681856] via 13.13.13.3, 00:25:24, Serial1/0
13.0.0.0/24 is subnetted, 1 subnets
C 13.13.13.0 is directly connected, Serial1/0
D*EX 0.0.0.0/0 [170/2681856] via 13.13.13.3, 00:25:24, Serial1/0
r1#p 56.56.56.5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 56.56.56.5, timeout is 2 seconds:
!!!!!