注:因IGRP与RIP一样,也是有类路由,所以基本上和RIP一样.
Router>
Router>en
Router#con t
Router(config)#host R1
R1(config)#int e0
R1(config-if)#ip add 192.168.1.1 255.255.255.0
R1(config-if)#no sh
R1(config-if)#exit
R1(config)#exit
R1#show controllers                                                        在不知道哪个是DCE的话可用此命令

HD unit 0, idb = 0x1AE828, driver structure at 0x1B4BA0
buffer size 1524  HD unit 0,V.35 DCE cable
cpb = 0x7, eda = 0x58DC, cda = 0x58F0
RX ring with 16 entries at 0x4075800

R1#con t
R1(config)#int s0
R1(config-if)#ip add 192.168.2.1 255.255.255.0
R1(config-if)#clock rate 64000
R1(config-if)#no sh
R1(config-if)#exit
R1(config)#route igrp 100                                               启用IGRP路由                                  
R1(config-router)#net 192.168.1.0
R1(config-router)#net 192.168.2.0
R1(config-router)#exit
R1(config)#exit

Router>
Router>en
Router#con t
Router(config)#host R2
R2(config)#int e0
R2(config-if)#ip add 192.168.3.1 255.255.255.0
R2(config-if)#no sh
R2(config-if)#exit
R2(config)#int s0
R2(config-if)#ip add 192.168.2.2 255.255.255.0
R2(config-if)#no sh
R2(config-if)#exit
R2(config)#route igrp 100
R2(config-router)#net 192.168.2.0
R2(config-router)#net 192.168.3.0
R2(config-router)#exit
R2(config)#exit
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
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
       U - per-user static route

Gateway of last resort is not set

C    192.168.3.0 is directly connected, Ethernet0
C    192.168.2.0 is directly connected, Serial0

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
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
       U - per-user static route

Gateway of last resort is not set

C    192.168.3.0 is directly connected, Ethernet0
C    192.168.2.0 is directly connected, Serial0
I    192.168.1.0 [100/651] via 192.168.2.1, 00:05:24, Serial0

R1#show ip route

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