地址和路由配置： /****** A网路由器 ******/ Router-A#conf t(切换到配置状态) Router-A(config)#int e0(配置Ethernet 0口) Router-A(config-if)#description the LAN port link to my local network（端口说明） Router-A(config-if)#ip add 202.96.199.1 255.255.255.0
（定义以太网IP地址，子网掩码表示为C类网络） Router-A(config-if)#no shutdown（激活端口） Router-A(config-if)#exit Router-A(config)#int s0(配置Serial 0口) Router-A(config-if)#description the WAN port link to Router-B（端口说明） Router-A(config-if)#ip add 202.98.0.1 255.255.255.252（定义互联广域网IP地址） Router-A(config-if)#bandwidth 128（定义端口速率，单位：kbps） Router-A(config-if)#no shutdown（激活端口） Router-A(config-if)#exit Router-A(config)#ip route 202.97.76.0 255.255.255.224 202.98.0.2 （定义静态路由，通过网关到达对端局域网络，IP为对端广域网IP地址） Router-A(config)#exit Router-A#wr m(保存配置)
/****** B网路由器 ******/ Router-B#conf t Router-B(config)#int e0 Router-B(config-if)#description the LAN port link to my local network（端口说明） Router-B(config-if)#ip add 202.97.76.1 255.255.255.224 （定义以太网IP地址，子网掩码表示为拥有32个地址的子网） Router-B(config-if)#no shutdown Router-B(config-if)#exit Router-B(config)#int s0 Router-B(config-if)#description the WAN port link to Router-A（端口说明） Router-B(config-if)#ip add 202.98.0.2 255.255.255.252 Router-B(config-if)#bandwidth 128 Router-B(config-if)#no shutdown Router-B(config-if)#exit Router-B(config)#ip route 202.96.199.0 255.255.255.0 202.98.0.1 （定义静态路由，通过网关到达对端局域网络，IP为对端广域网IP地址） Router-B(config)#exit Router-B#wr m(保存配置)
配置完成。
这里是A网、B网路由器配置清单。 Router A: Router-A#sh run Building Configuration... Current configuration version 11.2 service udp-small-servers service tcp-small-servers hostname Router-A enable secret test-a ip subnet-zero interface Ethernet0 description the LAN port link to my local network ip address 202.96.199.1 255.255.255.0 interface Serial0 description the WAN port link to Router-B ip address 202.98.0.1 255.255.255.252 bandwidth 128 interface Serial1 no ip address shutdown ip domain-name xxx.com ip name-server 202.96.199.2 ip name-server 202.96.199.3 ip classless ip route 202.97.76.0 255.255.255.224 202.98.0.2 line con 0 line aux 0 line vty 0 4 password telnet-a login end Router-A# Rouer B: Router-B#sh run Building Configuration... Current configuration version 11.2 service udp-small-servers service tcp-small-servers hostname Router-B enable secret test-b ip subnet-zero interface Ethernet0 description the LAN port link to my local network ip address 202.97.76.1 255.255.255.224 interface Serial0 description the WAN port link to Router-A ip address 202.98.0.2 255.255.255.252 bandwidth 128 interface Serial1 no ip address shutdown ip domain-name yyy.com ip name-server 202.96.199.2 ip name-server 202.96.199.3 ip classless ip route 202.96.199.0 255.255.255.0 202.98.0.1
line con 0 line aux 0 line vty 0 4 password telnet-b login end Router-B#
