Case 10* L, n( ]* ]- q7 O. J: [4 U/ ?
让路由器C选择经过AS 200(网络160.10.0.0)到达AS 600:
y( T& Z& K' v+ b路由器C配置如下:* k5 Y( W9 f; X
!: [: O1 @, G t
router bgp 3001 ^8 n! `& Z6 G# }: v- ?+ u
network 170.10.0.0* s+ w( E0 I* m7 c
neighbor 2.2.2.2 remote-as 100+ T* k9 V: U$ }: o
neighbor 2.2.2.2 route-map Aiko out
0 P2 l6 f- l" T, Q!
0 ^+ c) G6 ^* }: ]7 d$ i$ m- ^4 Vroute-map Aiko permit 10: r V3 x+ n! A. Y. U( r, b
set as-path prepend 300 300 300* P( L( a: B9 o6 b5 L$ I# }
!( ]) i) O4 C. |- t: G# h+ E
Community Filtering! R7 q6 q. Y4 U2 n
使用社团属性过滤BGP路由的步骤如下:
4 Q0 l$ g) \1 s2 {& A, G1.设置社团列表:
5 B T0 e! X5 V5 N3 IAiko(config)#ip community-list {sequence-number} {permit|deny} {community-number}2.在route map里调用社团列表.关键字exact-match表示精确匹配:
/ R" o! V2 x9 Q& N {, A, g; }, tAiko(config-route-map)#match community {sequence-number} [exact-match]
4 ^% D! P, P% u% p( F- R4 i2 N3.设置社团属性.关键字addtive表示在原有社团属性的基础上增加新的属性;而不是覆盖:
5 m: Q2 I% c2 r8 U8 S' I( K3 P! kAiko(config-route-map)#set community {AA:NN|number|local-as|no-advertise|no-export}[additive] |
发表于 2012-8-3 20:12:39
