主要是看看手动汇总之后路由表看起来有什么区别....

拓扑连接:

autostart = False

[localhost]
`7200`
p_w_picpath = C:\Program Files\Dynamips\p_w_picpaths\C7200.bin
npe = npe-400
ram = 256
idlepc = 0xffffffff80425144
confreg = 0x2142

`ROUTER Router1`
model = 7200
console = 2001
slot0 = PA-C7200-IO-FE
slot1 = PA-4T
S1/0 = Router2 S1/0

`ROUTER Router2`
model = 7200
console = 2002
slot0 = PA-C7200-IO-FE
slot1 = PA-4T
配置如下:

RouterA:
en
config t
int loop 0
ip add 172.16.1.1 255.255.255.0
int loop 1
ip add 172.16.2.1 255.255.255.0
int s1/0
ip add 192.168.1.1 255.255.255.0
router rip
network 192.168.1.0
network 172.16.0.0

RouterB:
en
config t
int loop 0
ip add 10.1.1.1 255.255.255.0
int loop 1
ip add 10.1.2.1 255.255.255.0
int s1/0
ip add 192.168.1.2 255.255.255.0
router rip
network 192.168.1.0
network 10.0.0.0
验证结果:

因为rip是v1的,也就是说我还没有设置自动汇总.

RouterA#show ip route
Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 2 subnets
C       172.16.1.0 is directly connected, Loopback0
C       172.16.2.0 is directly connected, Loopback1
R    10.0.0.0/8 [120/1] via 192.168.1.2, 00:00:10, Serial1/0
C    192.168.1.0/24 is directly connected, Serial1/0
RouterA#

RouterB#show ip route
Gateway of last resort is not set

R    172.16.0.0/16 [120/1] via 192.168.1.1, 00:00:05, Serial1/0
     10.0.0.0/24 is subnetted, 2 subnets
C       10.1.2.0 is directly connected, Loopback1
C       10.1.1.0 is directly connected, Loopback0
C    192.168.1.0/24 is directly connected, Serial1/0
RouterB#

然后在2个路由器上都使用命令

router rip

version 2

no auto-summary

再次验证:

RouterA#show ip route
Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 2 subnets
C       172.16.1.0 is directly connected, Loopback0
C       172.16.2.0 is directly connected, Loopback1
     10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
R       10.1.2.0/24 [120/1] via 192.168.1.2, 00:00:01, Serial1/0
R       10.1.1.0/24 [120/1] via 192.168.1.2, 00:00:01, Serial1/0
R       10.0.0.0/8 [120/1] via 192.168.1.2, 00:00:26, Serial1/0
C    192.168.1.0/24 is directly connected, Serial1/0

 

RouterB#show ip route
Gateway of last resort is not set

     172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
R       172.16.0.0/16 [120/1] via 192.168.1.1, 00:00:41, Serial1/0
R       172.16.1.0/24 [120/1] via 192.168.1.1, 00:00:14, Serial1/0
R       172.16.2.0/24 [120/1] via 192.168.1.1, 00:00:14, Serial1/0
     10.0.0.0/24 is subnetted, 2 subnets
C       10.1.2.0 is directly connected, Loopback1
C       10.1.1.0 is directly connected, Loopback0
C    192.168.1.0/24 is directly connected, Serial1/0
按照理论上出现的结果是不会有蓝色的这2条路由的,后来想到原来是rip v1还没撤销掉.

过一点时间再去查看show ip route之后果然蓝色的记录已经消失掉了.

个人猜想如下:因为rip v1是每30s触发一次表更新,180s之后超时,再过90s之后路由刷新计时器被初始化

所以路由器在270s之后没有收到rip v1的更新,所以删除了那2条蓝色的记录.

如果我在使用version 2  no auto-summary命令之前使用no router rip,这样删除了rip v1路由,

然后在使用router rip version 2  no auto-summary network ****

配置完成之后,再show的时候,蓝色的2个记录肯定也不会出来.