CCNA学习笔记29--RIPv2自动汇总（实验）

实验目的：理解RIP自动汇总的工作方式
实验拓扑：

实验步骤：
1.基本配置
2.配置端口ip
3.配置RIP，其中启动自动汇总的功能，当然，默认就是开启自动汇总的功能。
R1(config)#router rip
R1(config-router)#version 2
R1(config-router)#auto-summary
R1(config-router)#network 11.0.0.0
R1(config-router)#network 12.0.0.0

R2(config)#router rip
R2(config-router)#version 2
R2(config-router)#auto-summary
R2(config-router)#network 1.0.0.0
R2(config-router)#network 12.0.0.0

R3(config)#router rip
R3(config-router)#version 2
R3(config-router)#auto-summary
R3(config-router)#network 1.0.0.0
4.检查全网是否互通
R1#ping 1.1.22.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.22.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
R1#ping 1.1.33.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.33.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
5.查看路由表
R1#show ip route
R     1.0.0.0/8 [120/1] via 12.1.1.2, 00:00:25, Ethernet0/0
      11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
//R1收到R2R3的路由都被汇总成了主类

R2#show ip route
R        1.1.33.0/24 [120/1] via 1.1.23.3, 00:00:02, Ethernet0/1
R     11.0.0.0/8 [120/1] via 12.1.1.1, 00:00:11, Ethernet0/0
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
//对于1.1.33.0/24即R3回环后路由依然是明细的，原因是R2和R3处于同一主类网络，在同一主类网内，传输的是明细。到主类网络的边界就会汇总

R3#show ip route
R        1.1.22.0/24 [120/1] via 1.1.23.2, 00:00:22, Ethernet0/0
R     11.0.0.0/8 [120/2] via 1.1.23.2, 00:00:22, Ethernet0/0
R     12.0.0.0/8 [120/1] via 1.1.23.2, 00:00:22, Ethernet0/0