实验31 验证RIPv2 不支持CIDR汇总,但可传递CIDR汇总特性

1、实验：验证RIPv2 不支持CIDR汇总，但可传递CIDR汇总特性试验目的：验证RIP V2 不支持CIDR汇总，但可传递CIDR汇总特性。试验设备：RG-RSR20 二台、网线若干试验拓扑图：实验步骤及要求：第一步：配置各台路由器用户名和IP地址，并且使用ping命令确认各路由器的直连口的互通性。第二步：按照拓扑配置RIPv2协议，关闭自动汇总。R1：R1(config)#router ripR1(config-router)#version 2R1(config-router)#no auto-summary R1(config-router)#net 12.1.1.0R1(config-

2、router)#net 172.8.0.0R1(config-router)#net 172.9.0.0R1(config-router)#net 172.10.0.0R1(config-router)#net 172.11.0.0R1(config-router)#net 172.12.0.0R1(config-router)#endR2：R2(config)#router rip R2(config-router)#version 2R2(config-router)#no auto-summary R2(config-router)#net 12.1.1.0R2(config-route

3、r)#net 10.8.0.0R2(config-router)#net 10.9.0.0R2(config-router)#net 10.10.0.0R2(config-router)#net 10.11.0.0R2(config-router)#net 10.12.0.0R2(config-router)#end第三步：查看路由表R1#show ip routC 172.8.0.0/16 is directly connected, Loopback0C 172.9.0.0/16 is directly connected, Loopback1C 172.10.0.0/16 is dire

4、ctly connected, Loopback2C 172.11.0.0/16 is directly connected, Loopback3C 172.12.0.0/16 is directly connected, Loopback4 10.0.0.0/16 is subnetted, 5 subnetsR 10.10.0.0 120/1 via 12.1.1.2, 00:00:08, Serial1/1R 10.11.0.0 120/1 via 12.1.1.2, 00:00:08, Serial1/1R 10.8.0.0 120/1 via 12.1.1.2, 00:00:08,

5、Serial1/1R 10.9.0.0 120/1 via 12.1.1.2, 00:00:08, Serial1/1R 10.12.0.0 120/1 via 12.1.1.2, 00:00:08, Serial1/1相互学到了各自的路由信息 12.0.0.0/24 is subnetted, 1 subnetsC 12.1.1.0 is directly connected, Serial1/1R1#R2#show ip rouR 172.8.0.0/16 120/1 via 12.1.1.1, 00:00:19, Serial1/0R 172.9.0.0/16 120/1 via 12.

6、1.1.1, 00:00:19, Serial1/0R 172.10.0.0/16 120/1 via 12.1.1.1, 00:00:19, Serial1/0R 172.11.0.0/16 120/1 via 12.1.1.1, 00:00:19, Serial1/0R 172.12.0.0/16 120/1 via 12.1.1.1, 00:00:18, Serial1/0相互学到了各自的路由信息 10.0.0.0/16 is subnetted, 5 subnetsC 10.10.0.0 is directly connected, Loopback2C 10.11.0.0 is di

7、rectly connected, Loopback3C 10.8.0.0 is directly connected, Loopback0C 10.9.0.0 is directly connected, Loopback1C 10.12.0.0 is directly connected, Loopback4 12.0.0.0/24 is subnetted, 1 subnetsC 12.1.1.0 is directly connected, Serial1/0R2#第四步：在R2上做汇总R2(config)#inter s1/0R2(config-if)#ip summary-addr

8、ess rip 10.8.0.0 255.248.0.0 R2(config-if)#endR2#30秒后我们查看R1的路由表：R1#show ip routC 172.8.0.0/16 is directly connected, Loopback0C 172.9.0.0/16 is directly connected, Loopback1C 172.10.0.0/16 is directly connected, Loopback2C 172.11.0.0/16 is directly connected, Loopback3C 172.12.0.0/16 is directly con

9、nected, Loopback4 10.0.0.0/13 is subnetted, 1 subnetsR 10.8.0.0 120/1 via 12.1.1.2, 00:00:00, Serial1/1R1已经接收到了汇总路由 12.0.0.0/24 is subnetted, 1 subnetsC 12.1.1.0 is directly connected, Serial1/1R1#show ip rip database 10.0.0.0/8 auto-summary10.8.0.0/13 1 via 12.1.1.2, 00:00:22, Serial1/1R1已经接收到了汇总路由

10、，子网掩码是13位12.0.0.0/8 auto-summary12.1.1.0/24 directly connected, Serial1/1172.8.0.0/16 auto-summary172.8.0.0/16 directly connected, Loopback0172.9.0.0/16 auto-summary172.9.0.0/16 directly connected, Loopback1172.10.0.0/16 auto-summary172.10.0.0/16 directly connected, Loopback2172.11.0.0/16 auto-summa

11、ry172.11.0.0/16 directly connected, Loopback3172.12.0.0/16 auto-summary172.12.0.0/16 directly connected, Loopback4R1#第五步：在路由器R1上做汇总R1(config)#inter s1/1R1(config-if)#ip summary-address rip 172.16.0.0 255.248.0.0 Summary mask must be greater or equal to major net其意思是汇总掩码的长度必须等于或大于主类的长度，因为“1316”,所以不能汇

12、总，由此可见RIP不支持 CIDR。第六步：所以RIPv2不支持CIDR汇总，但是可以传递CIDR汇总。方法：我们用静态路由发布被汇总的路由：R1(config)#ip route 172.8.0.0 255.248.0.0 null 0我们用静态路由来发布被汇总的路由，端口指向null 0， R1(config)#router ripR1(config-router)#redistribute static将静态路由重发布到RIP路由协议中 R1(config-router)#no net 172.8.0.0 R1(config-router)#no net 172.9.0.0R1(conf

13、ig-router)#no net 172.10.0.0R1(config-router)#no net 172.11.0.0R1(config-router)#no net 172.12.0.0R1(config-router)#endR1#在R2上验证：R2#show ip route 10.0.0.0/16 is subnetted, 5 subnetsC 10.10.0.0 is directly connected, Loopback2C 10.11.0.0 is directly connected, Loopback3C 10.8.0.0 is directly connecte

14、d, Loopback0C 10.9.0.0 is directly connected, Loopback1C 10.12.0.0 is directly connected, Loopback4 12.0.0.0/24 is subnetted, 1 subnetsC 12.1.1.0 is directly connected, Serial1/0R 172.8.0.0/13 120/1 via 12.1.1.1, 00:00:24, Serial1/0结果表明R1将汇总转递给了R2！验证了RIPv2 不支持CIDR汇总，但可传递CIDR汇总特性！R2#show ip rip datab

15、ase 10.0.0.0/8 auto-summary10.8.0.0/13 int-summary10.8.0.0/16 directly connected, Loopback010.9.0.0/16 directly connected, Loopback110.10.0.0/16 directly connected, Loopback210.11.0.0/16 directly connected, Loopback310.12.0.0/16 directly connected, Loopback412.0.0.0/8 auto-summary12.1.1.0/24 directly connected, Serial1/0172.8.0.0/131 via 12.1.1.1, 00:00:00, Serial1/0汇总的路由条目，子网掩码是13位R2#ping 172.9