BGP基本配置.doc

BGP基本配置-Router(config)#router bgp 65001 /启动BGP,本地AS为65001Router(config-router)#neighbor 1.1.1.1 remote-as 65002 /EBGPRouter(config-router)#neighbor 2.2.2.2 remote-as 65001 /IBGPRouter(config-router)#neighbor 1.1.1.1 shutdown /管理性中断路由邻居关系Router(config-router)#no neighbor 1.1.1.1 shutdownRouter(config-router)#neighbor 1.1.1.1 next-hop-self /避免下一跳不可达,把下一跳设为自己Router(config-router)#neighbor 2.2.2.2 update-source loopback 0 /指定本路由器的BPG源IP为loop 0 Router(config-router)#network 10.0.0.0 /发布网段Router(config-router)#network 172.16.1.0 mask 255.255.255.0 /加掩码Router(config-router)#no synchronization /关闭同步EBGP多跳-Router(config-router)#neighbor 5.5.5.5 remote-as 65003 /EBGPRouter(config-router)#neighbor 5.5.5.5 update-source loopback 0 /EBGPRouter(config-router)#neighbor 5.5.5.5 ebgp-multihop 2 /EBGP多跳对等体组-Router(config-router)#neighbor group1 peer-group /定义对等体组Router(config-router)#neighbor group1 next-hop-self /定义对等体组共同的配置命令Router(config-router)#neighbor 1.1.1.1 peer-group group1 /加入到组BGP验证-Router(config)#show ip bgp summary /查看邻居汇总Router(config)#show ip bgp /查看BGP路由表*-示例-Router A:router bgp 65101neighbor 192.168.1.1 remote-as 65102neighbor 192.168.1.1 update-source loopback 0/一般EBGP不用这句neighbor 192.168.1.1 ebgp-multihop 2 /要的话就要加这一句neighbor 10.2.2.2 remote-as 65101neighbor 10.2.2.2 update-source loopback 0/IBGP常用neighbor 10.2.2.2 next-hop-self/默认IBGP通告下一跳不变,这里改成自-对等体组示例-router bgp 65100neighbor internal peer-groupneighbor internal remote-as 65100neighbor internal update-source loopback 0neighbor internal next-hop-selfneighbor internal distribute-list 20 outneighbor 192.168.24.1 peer-group internalneighbor 192.168.25.1 peer-group internalneighbor 192.168.26.1 peer-group internal- BGP配置示例 -router bgp 65000neighbor 10.1.1.2 remote-as 64520neighbor 192.168.2.2 remote-as 65000neighbor 192.168.2.2 update-source loopback 0neighbor 192.168.2.2 next-hop-selfnetwork 172.16.10.0 mask 255.255.255.0network 192.168.1.0network 192.168.3.0no synchronization-debug ip bgp events /查看BGP会话建立过程show ip bgp summary /邻居汇总show ip bgp /BGP转发表clear ip bgp * clear ip bgp 2.2.2.2clear ip bgp 2.2.2.2 soft outneig