640 Configuring advanced BGP.ppt

ConfiguringadvancedBGP Overview PeerGroup路由反射器Filter listSuppress mapAttribute mapAdvertise mapBGPbackdoorBGP团体BGP联盟 本PPT为新版NP扩展内容 已超出NP的大纲要求 仅供有志于获得CCIE的学员学习 具体内容如下 PeerGroup neighbor peer group name peer group Router config router 创建对等体组 neighbor ip address peer group peer group name Router config router 为一组邻居定义相同参数设置的模板用于替代逐个的配置 通常使用在多个邻居需要相同的出站策略 成员可以拥有不同的进站策略 一次更新组内的多个邻居 简单易于配置 Example PeerGroup RouterCUsingaPeerGroup RouterCWithoutaPeerGroup routerbgp65100neighbor192 168 24 1remote as65100neighbor192 168 24 1update sourceloopback0neighbor192 168 24 1next hop selfneighbor192 168 24 1distribute list20outneighbor192 168 25 1remote as65100neighbor192 168 25 1update sourceloopback0neighbor192 168 25 1next hop selfneighbor198 101 25 1distribute list20outneighbor192 168 26 1remote as65100neighbor192 168 26 1update sourceloopback0neighbor192 168 26 1next hop selfneighbor198 101 26 1distribute list20out routerbgp65100neighborinternalpeer groupneighborinternalremote as65100neighborinternalupdate sourceloopback0neighborinternalnext hop selfneighborinternaldistribute list20outneighbor192 168 24 1peer groupinternalneighbor192 168 25 1peer groupinternalneighbor192 168 26 1peer groupinternal 路由反射器 AS64513 l0172 16 1 1 24172 16 2 1 24172 16 3 1 24172 16 4 1 24 192 168 2 2 24S1 0 S1 1192 168 2 1 24 R2 R1 S1 1192 168 1 1 24 192 168 1 2 24S1 0 routerbgp64513neighbor192 168 2 1route reflector clientneighbor192 168 3 2route reflector client IBGP R3 R4 AS64512 S1 1192 168 3 1 24 S1 0192 168 3 2 24 BGP团体 BGP团体属性主要包含如下四种 no export 该属性的路由不通告给AS以外的对等体no advertise 该属性的路由不通告给任何BGP的对等体internet 该属性的路由会通告所有BGP对等体local as 该属性的路由仅仅会通告给本地AS的对等体 BGPCommunity internet AS64512 AS64513 l0172 16 1 1 24172 16 2 1 24172 16 3 1 24172 16 4 1 24 192 168 2 2 24S1 0 S1 1192 168 2 1 24 R3 R1 S1 1192 168 1 1 24 192 168 1 2 24S1 0 R2 R4 FA0 0192 168 3 1 24 FA0 0192 168 3 2 24 172 16 1 1 24 internet 172 16 2 1 24 internet 172 16 3 1 24 internet 172 16 4 1 24 internet BGPCommunity no export AS64512 AS64513 l0172 16 1 1 24172 16 2 1 24172 16 3 1 24172 16 4 1 24 192 168 2 2 24S1 0 S1 1192 168 2 1 24 R3 R1 S1 1192 168 1 1 24 192 168 1 2 24S1 0 172 16 1 1 24 no export 172 16 2 1 24172 16 3 1 24 no export 172 16 4 1 24 172 16 2 1 24172 16 4 1 24 R2 R4 FA0 0192 168 3 1 24 FA0 0192 168 3 2 24 172 16 1 1 24 no export 172 16 2 1 24172 16 3 1 24 no export 172 16 4 1 24 如果有BGP联盟存在 则no export会通告给联盟的其它的AS 而不会向联盟以外的AS进行通告 BGPCommunity no advertise AS64512 AS64513 l0172 16 1 1 24172 16 2 1 24172 16 3 1 24172 16 4 1 24 192 168 2 2 24S1 0 S1 1192 168 2 1 24 R3 R1 S1 1192 168 1 1 24 192 168 1 2 24S1 0 R2 R4 FA0 0192 168 3 1 24 FA0 0192 168 3 2 24 172 16 1 1 24 no advertise 172 16 2 1 24 no advertise 172 16 3 1 24 no advertise 172 16 4 1 24 no advertise BGPCommunity local as AS64512 AS64513 l0172 16 1 1 24172 16 2 1 24172 16 3 1 24172 16 4 1 24 192 168 2 2 24S1 0 S1 1192 168 2 1 24 R3 R1 S1 1192 168 1 1 24 192 168 1 2 24S1 0 R2 R4 FA0 0192 168 3 1 24 FA0 0192 168 3 2 24 172 16 1 1 24 local as 172 16 2 1 24 local as 172 16 3 1 24 local as 172 16 4 1 24 local as LAB BGPCommunity AS64512 AS64513 l0172 16 1 1 24172 16 2 1 24172 16 3 1 24172 16 4 1 24 192 168 2 2 24S1 0 S1 1192 168 2 1 24 R3 R1 S1 1192 168 1 1 24 192 168 1 2 24S1 0 R2 R4 FA0 0192 168 3 1 24 FA0 0192 168 3 2 24 access list1permit172 16 1 00 0 0 255access list1permit172 16 2 00 0 0 2