RIPv1与RIPv2下的VLSM实验

旺旺的窝窝

实验配置: 现在路由器间启动RIPv1R1#sh run

interface Ethernet0

ip address 192.168.1.33 255.255.255.224

!

interface Serial0

ip address 192.168.1.1 255.255.255.252

!

router rip

network 192.168.1.0

!

****************************************************

R2#sh run

!

interface Loopback0

ip address 192.168.1.65 255.255.255.224

!

interface Serial0

ip address 192.168.1.2 255.255.255.252

clockrate 64000

!

interface Serial1

ip address 192.168.1.5 255.255.255.252

clockrate 64000

!

router rip

network 192.168.1.0

!

****************************************************

R3#sh run

!

interface Ethernet0

ip address 192.168.1.34 255.255.255.224

!

interface Serial1

ip address 192.168.1.6 255.255.255.252

!

router rip

network 192.168.1.0

!

****************************************************

实验检验：

R2#sh ip route

Gateway of last resort is not set

  192.168.1.0/24 is variably subnetted, 3 subnets, 2 masks
C   192.168.1.64/27 is directly connected, Loopback0
C   192.168.1.0/30 is directly connected, Serial0
C   192.168.1.4/30 is directly connected, Serial1

通过R2的路由表我们看到R2并没有收到192.168.1.32/27网络的路由

R1#sh ip route

Gateway of last resort is not set

  192.168.1.0/24 is variably subnetted, 3 subnets, 2 masks
C   192.168.1.32/27 is directly connected, Ethernet0
C   192.168.1.0/30 is directly connected, Serial0
R   192.168.1.4/30 [120/1] via 192.168.1.1, 00:00:05, Serial0

我们看到R1并没有收到192.168.1.64/27网络的路由

R3#sh ip route

Gateway of last resort is not set

  192.168.1.0/24 is variably subnetted, 3 subnets, 2 masks
C   192.168.1.32/27 is directly connected, Ethernet0
R   192.168.1.0/30 [120/1] via 192.168.1.5, 00:00:15, Serial1
C   192.168.1.4/30 is directly connected, Serial1

我们看到R3也没有收到192.168.1.64/27网络的路由；由此我们看到，在3台路由器之间启用RIPV1后，3台路由器都是不完整的。这时因为RIPv1在发送路由更新时并不会携带网络的子网掩码 ，因此RIPV1并不能支持VLSM网络环境，因此为了网络能正常运行，我们必须配置RIPv2。

****************************************************

R1(config)#router rip

R1(config-router)#version 2

R1(config-router)#no auto-summary            //此命令是关闭路由汇总，目的是为了发送无类网络的路由，使子网能穿越有类网络的边界

R1(config-router)#network 192.168.1.0

****************************************************

R2(config)#router rip

R2(config-router)#version 2

R2(config-router)#no auto-summary

R2(config-router)#network 192.168.1.0

****************************************************

R3(config)#router rip

R3(config-router)#version 2

R3(config-router)#no auto-summary

R3(config-router)#network 192.168.1.0

****************************************************

现在再来查看一下路由表，看看有什么变化

R1#sh ip route

Gateway of last resort is not set

  192.168.1.0/24 is variably subnetted, 4 subnets, 2 masks
R   192.168.1.64/27 [120/1] via 192.168.1.1, 00:00:27, Serial0
C   192.168.1.32/27 is directly connected, Ethernet0
C   192.168.1.0/30 is directly connected, Serial0
R   192.168.1.4/30 [120/1] via 192.168.1.2, 00:00:27, Serial0
                            [120/1] via 192.168.1.34, 00:00:01, Ethernet0

R2#sh ip route

Gateway of last resort is not set

  192.168.1.0/24 is variably subnetted, 4 subnets, 2 masks
C   192.168.1.64/27 is directly connected, Loopback0
R   192.168.1.32/27 [120/1] via 192.168.1.1, 00:00:19, Serial0
                              [120/1] via 192.168.1.6, 00:00:25, Serial1
C   192.168.1.0/30 is directly connected, Serial0
C   192.168.1.4/30 is directly connected, Serial1

R3#sh ip route
Gateway of last resort is not set

  192.168.1.0/24 is variably subnetted, 4 subnets, 2 masks
R   192.168.1.64/27 [120/1] via 192.168.1.5, 00:00:12, Serial1
C   192.168.1.32/27 is directly connected, Ethernet0
R   192.168.1.0/30 [120/1] via 192.168.1.5, 00:00:12, Serial1
                            [120/1] via 192.168.1.33, 00:00:11, Ethernet0
C   192.168.1.4/30 is directly connected, Serial1

可以看到在配置RIPV2 之后，3台路由器都有了完整的路由表。

更多信息，请点击合肥思科培训。

旺旺的窝窝

maqizhao

这个图是怎么做出来的?

jusly

thanks for you share !!!!!!!!!!!!!!!!!!!!

hbmabo

非常感谢