Cisco IOS Cookbook 中文精简版第九章 BGP …

9.1. Configuring BGP

提问 在网络中启用BGP

回答

Route1在AS 65500中

Router1#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router1(config)#interface Serial0

Router1(config-if)#ip address 192.168.55.6 255.255.255.252

Router1(config-if)#exit

Router1(config)#router bgp 65500

Router1(config-router)#network 192.168.1.0

Router1(config-router)#neighbor 192.168.55.5 remote-as 65501

Router1(config-router)#no synchronization

Router1(config-router)#exit

Router1(config)#end

Router1#

Router2在AS 65501中

Router2#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router2(config)#interface Serial0

Router2(config-if)#ip address 192.168.55.5 255.255.255.252

Router2(config-if)#exit

Router2(config)#router bgp 65501

Router2(config-router)#network 172.25.17.0 mask 255.255.255.0

Router2(config-router)#neighbor 192.168.55.6 remote-as 65500

Router2(config-router)#no synchronization

Router2(config-router)#exit

Router2(config)#end

Router2#

注释 在对BGP验证的时候比较有用的命令是

Router1#show ip bgp summary

BGP router identifier 192.168.99.5, local AS number 65500

BGP table version is 7, main routing table version 7

4 network entries and 4 paths using 484 bytes of memory

2 BGP path attribute entries using 196 bytes of memory

BGP activity 11/7 prefixes, 11/7 paths

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd

192.168.55.5 4 65501 17 18 7 0 0 00:12:38 2

172.25.2.2 4 65531 527 526 0 0 0 21:05:23 Active

Router1#

需要注意的是理想状态是

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