Configuring the ip unnumbered

　　 
　　

　　Router 1.1.1.1
　　Current configuration:
　　
　　interface Ethernet0
　　ip address 171.68.178.196 255.255.255.192
　　
　　interface Serial0
　　ip unnumbered Ethernet0
　　
　　router igrp 10
　　network 171.68.0.0
　　Router 2.2.2.2
　　Current configuration:
　　
　　interface Ethernet 0
　　ip address 171.68.179.1 255.255.255.192
　　
　　interface Serial 0
　　ip unnumbered Ethernet0
　　
　　router igrp 10
　　network 171.68.0.0
　　Router 1.1.1.1#show ip route
　　
　　171.68.0.0/26 is subnetted, 3 subnets
　　I 171.68.179.0 [100/8976] via 171.68.179.1, 00:00:02, Serial0
　　C 171.68.178.192 is directly connected, Ethernet0
　　I 171.68.0.0 [100/8976] via 171.68.179.1, 00:00:02, Serial0
　　
　　Router 1.1.1.1#ping 171.68.179.1
　　
　　Type escape sequence to abort.
　　Sending 5, 100-byte ICMP Echos to 171.68.179.1, timeout is 2 seconds:
　　!!!!!
　　Suclearcase/" target="_blank" >ccess rate is 100 percent (5/5), round-trip min/avg/max = 28/30/32 ms
　　
　　
　　Router 2.2.2.2#show ip route
　　
　　171.68.0.0/26 is subnetted, 3 subnets
　　C 171.68.179.0 is directly connected, Ethernet0
　　I 171.68.178.192 [100/8976] via 171.68.178.196, 00:00:02, Serial0
　　I 171.68.0.0 [100/8976] via 171.68.178.196, 00:00:02, Serial0
　　
　　Router 2.2.2.2#ping 171.68.178.196
　　
　　Type escape sequence to abort.
　　Sending 5, 100-byte ICMP Echos to 171.68.178.196, timeout is 2 seconds:
　　!!!!!
　　Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms

原文转自：http://www.ltesting.net