路由政策3_Distribute-list5

拓撲圖：

沒配置分發清單前：

R2:

router ospf 1

redistribute connected metric 10 subnets

 redistribute rip metric 30 subnets

 network 192.168.23.0 0.0.0.255 area 0

!

router rip

 version 2

 redistribute connected metric 2

 redistribute ospf 1 metric 4

 network 192.168.12.0

 no auto-summary

檢視各路由器的路由表：

r1#sh ip rou

C    192.168.12.0/24 is directly connected, Serial0/0

     1.0.0.0/24 is subnetted, 1 subnets

C       1.1.1.0 is directly connected, Loopback0

     2.0.0.0/24 is subnetted, 1 subnets

R       2.2.2.0 [120/2] via 192.168.12.2, 00:00:17, Serial0/0

     10.0.0.0/24 is subnetted, 1 subnets

C       10.10.10.0 is directly connected, Loopback1

R    192.168.23.0/24 [120/2] via 192.168.12.2, 00:00:17, Serial0/0

r1#

r2#sh ip rou

R       1.1.1.0 [120/1] via 192.168.12.1, 00:00:11, Serial0/0

C       2.2.2.0 is directly connected, Loopback0

R       10.10.10.0 [120/1] via 192.168.12.1, 00:00:11, Serial0/0

C    192.168.23.0/24 is directly connected, Serial0/1

r2#

r3#sh ip rou

O E2 192.168.12.0/24 [110/10] via 192.168.23.1, 00:00:22, Serial0/0

O E2    1.1.1.0 [110/30] via 192.168.23.1, 00:00:22, Serial0/0

<b>O E2    2.2.2.0 [110/10] via 192.168.23.1, 00:00:22, Serial0/0</b>

<b></b>

<b>O E2    10.10.10.0 [110/30] via 192.168.23.1, 00:00:09, Serial0/0</b>

C    192.168.23.0/24 is directly connected, Serial0/0r3#

可以看到各路由器都學習到了全網的路由！

下面配置分發清單：

R2：

access-list 1 permit 1.1.1.0 0.0.0.255

distribute-list 1 out rip <b>//</b><b>配置分發清單，關聯ACL</b><b>序号1</b><b>，應用在出接口，協定為RIP</b><b>；這裡的RIP</b><b>是指重釋出的來源為RIP</b><b>協定（過渡從RIP</b><b>網絡重釋出過來的，其它路由協定的路由不受影響，如下，R2</b><b>的直連路由2.2.2.2/24</b><b>沒有被過渡掉）</b>

S注意：distribute-list 1 後面如何要加協定的話隻能在OUT方向，IN方向無此功能！！！

檢視R3的路由表：

O E2 192.168.12.0/24 [110/10] via 192.168.23.1, 00:01:03, Serial0/0

O E2    1.1.1.0 [110/30] via 192.168.23.1, 00:01:03, Serial0/0

<b>O E2    2.2.2.0 [110/10] via 192.168.23.1, 00:01:03, Serial0/0</b>

C    192.168.23.0/24 is directly connected, Serial0/0

r3#

可以看出R3隻學習到了RIP網絡的1.1.1.1/24，那為什麼2.2.2.0/24還在呢？因為它是R2的直連路由而不是RIP網絡的路由！！！

      本文轉自810105851 51CTO部落格，原文連結http://blog.51cto.com/4708948/1131442：，如需轉載請自行聯系原作者