帧中继上的RIP配置
1、 实验目的：
通过本次是实验，我们可以掌握如下技能
1) 帧中继上路由协议运行的特殊性
2) 水平分割问题
2、 实验拓扑图：
3、 实验步骤：
（1） 根据上一个实验的配置结果，继续进行这次实验，请先访问http://lorna8023.blog.51cto.com/777608/241090
（2） 在帧中继上配置RIP,具体的配置如下：
R1(config)#interface loopback 0
R1(config-if)#ip address 1.1.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#interface serial 0/1
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config)#router rip
R1(config-router)#network 1.0.0.0
R1(config-router)#network 192.168.1.0
R1(config-router)#
R3(config)#interface loopback 0
R3(config-if)#ip address 3.3.3.3 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#exit
R3(config)#interface serial serial 0/2
R3(config-if)#ip address 192.168.1.2 255.255.255.0
R3(config-if)#no shutdown
R3(config-if)#exit
R3(config)#router rip
R3(config-router)#network 3.3.3.0
R3(config-router)#network 192.168.1.0
R3(config-router)#
R4(config)#interface loopback 0
R4(config-if)#ip address 4.4.4.4 255.255.255.0
R4(config-if)#no shutdown
R4(config-if)#exit
R4(config)#interface serial 0/3
R4(config-if)#ip address 192.168.1.3 255.255.255.0
R4(config-if)#no shutdown
R4(config-if)#exit
R4(config)#router rip
R4(config-router)#network 4.0.0.0
R4(config-router)#net
R4(config-router)#network 192.168.1.0
R4(config-router)#
（3） 测试配置情况
查看路由表，结果如下：
R1#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, 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 not set
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
R 3.0.0.0/8 [120/1] via 192.168.1.2, 00:00:19, Serial0/1
R 4.0.0.0/8 [120/1] via 192.168.1.3, 00:00:22, Serial0/1
C 192.168.1.0/24 is directly connected, Serial0/1
R1#
通过RIP学习到了，动态路由。
R1#show ip interface serial 0/1
Serial0/1 is up, line protocol is up
Internet address is 192.168.1.1/24
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Multicast reserved groups joined: 224.0.0.9
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Security level is default
Split horizon is disabled //默认情况下水平分割是关闭的。
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is enabled
IP Flow switching is disabled
IP CEF switching is disabled
IP Fast switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
--More—
我们可以打开水平分割，我们可以进行如下配置。
在R3上打开水平分割，配置命令如下：
R3(config)#interface serial 0/2
R3(config-if)#ip split-horizon
R3#clear ip route
R3#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, 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 not set
R 1.0.0.0/8 [120/1] via 192.168.1.1, 00:00:28, Serial0/2
3.0.0.0/24 is subnetted, 1 subnets
C 3.3.3.0 is directly connected, Loopback0
R 4.0.0.0/8 [120/2] via 192.168.1.1, 00:00:28, Serial0/2 //R3可以获得R1和R4的回环路由。
C
OK 本次实验结束！！！！！！！！！！
