RIP（Routing Information Protocol）是最常使用的内部网关协议(InteriorGateway Protocol)之一，是一种典型的基于D-V 算法的动态路由协议。通过UDP（User Datagram Protocol）报文交换路由信息，使用跳数（HopCount）来衡量到达目的地的距离（被称为路由权－Routing cost）。由于在RIP 中大于或等于16 的跳数被定义为无穷大（即目的网络或主机不可达），所以RIP 一般用于采用同类技术的中等规模的网络，如校园网及一个地区范围内的网络，RIP 并非为复杂、大型的网络而设计。
启动RIP，进入RIP 视图： router Rip
关闭RIP： no rip
在指定的网络上使能RIP network{ network-number| all }
在指定的网络上禁用RIP no network{ network-number| all
Router1：
Router>enable //进入特权模式
Router#conf ter //进入全局配置模式
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int f0/0 //配置Fa0/0 接口
Router(config-if)#ip add 1.1.1.2 255.255.255.0
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
Router(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#int s0/0/0 //配置串口
Router(config-if)#ip add 1.1.6.1 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
Router(config-if)#exit
Router(config)#int s0/0/1 //配置串口
Router(config-if)#ip add 1.1.2.1 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to down
Router(config-if)#exit
Router(config)#router rip //进入RIP 视图
Router(config-router)#network 1.0.0.0 //发布直连网络
Router(config-router)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip route //查看路由表
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, 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
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, FastEthernet0/0
Router#
Router2：
Router>enable
Router#conf ter
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int f0/0
Router(config-if)#ip add 1.1.5.2 255.255.255.0
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#int s0/0/1
Router(config-if)#ip add 1.1.2.2 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to up
Router(config-if)#exit
Router(config)#int s0/0/0
Router(config-if)#ip add 1.1.3.1 255.255.255.0
Router(config-if)#clo rate 64000
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#network 1.0.0.0
Router(config-router)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#
Router#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, 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
1.0.0.0/24 is subnetted, 3 subnets
R 1.1.1.0 [120/1] via 1.1.2.1, 00:00:11, Serial0/0/1
C 1.1.2.0 is directly connected, Serial0/0/1
C 1.1.5.0 is directly connected, FastEthernet0/0
Router#
Router3：
Router>en
Router#conf ter
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#int f0/0
Router(config-if)#ip add 1.1.4.2 255.255.255.0
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#int s0/0/0
Router(config-if)#ip add 1.1.6.2 255.255.255.0
Router(config-if)#clo rate 64000
Router(config-if)#no shutdown
Router(config-if)#
%LINK-5-CHANGED: Interface Serial0/0/0, changed state to up
Router(config-if)#exit
Router(config)#int s0/0/1
Router(config-if)#ip add 1.1.3.2 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface Serial0/0/1, changed state to up
Router(config-if)#exit
Router(config)#router rip
Router(config-router)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/1, changed state to up
Router(config-router)#network 1.0.0.0
Router(config-router)#exit
Router(config)#exit
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip rou
Router#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, 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
1.0.0.0/24 is subnetted, 6 subnets
R 1.1.1.0 [120/1] via 1.1.6.1, 00:00:02, Serial0/0/0
R 1.1.2.0 [120/1] via 1.1.6.1, 00:00:02, Serial0/0/0
[120/1] via 1.1.3.1, 00:00:10, Serial0/0/1
C 1.1.3.0 is directly connected, Serial0/0/1
C 1.1.4.0 is directly connected, FastEthernet0/0
R 1.1.5.0 [120/1] via 1.1.3.1, 00:00:10, Serial0/0/1
C 1.1.6.0 is directly connected, Serial0/0/0
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