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CCIE之路——路由过滤命令详解

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Route Maps类似于access lists，不同之处在于Route Maps可以改变Packets/Routes的部分属性。

来源：chinaitlab 2008年1月5日

两种方案效果相同。与接口联用的方案在抑制route feedback上效果比较好；与路由进程联用的方案在抑制route feedback时，由于在过滤时，相应的路由条目已经进行了路由表，所以失效。

　　<1> 与接口联用

router ospf 25
   redistribute rip metric 100
   network 172.16.1.254 0.0.0.0 area 25
   network 172.16.8.254 0.0.0.0 area 25
   network 172.16.50.254 0.0.0.0 area 25
   distribute-list 3 in Ethernet0/0
   distribute-list 3 in Ethernet0/1
   distribute-list 3 in Ethernet0/2
!
router rip
   redistribute ospf 25 metric 5
   passive-interface Ethernet0/0
   passive-interface Ethernet0/1
   passive-interface Ethernet0/2
   network 192.16.0.0
   distribute-list 1 in Ethernet0/3
   distribute-list 1 in Ethernet2/0
   distribute-ilst 1 in Ethernet2.1
!
ip classless
access-list 1 permit 172.16.128.0 0.0.127.255
access-iist 3 permit 172.16.0.0 0.0.127.255

　　<2> 与路由进程联用：

router ospf 25
   redistribute rip metric 100
   network 172.16.1.254 0.0.0.0 area 25
   network 172.16.8.254 0.0.0.0 area 25
   network 172.16.50.254 0.0.0.0 area 25
   distribute-list 10 out rip
!
router rip
   redistribute ospf 25 metric 5
   passive-interface Ethernet0/3
   passive-interface Ethernet2/0
   passive-interface Ethernet2/1
   network 172.16.0.0
   distribute-list 20 out ospf 25
!
ip classless
access-list 10 permit 172.16.130.0
access-list 10 permit 172.16.145.0
access-list 10 permit 172.16.240.0
access-list 20 permit 172.16.23.0
access-list 20 permit 172.16.9.0
access-list 20 permit 172.16.75.0

CCIE之路——路由过滤命令详解

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