天天看點

配置bgp的鄰居認證

一、拓撲圖

二、BGP基本配置:

1、配置兩台路由器的IP位址,保證直連鍊路的連通性。

2、配置兩台路由器的BGP協定:

R1(config-if)#router bgp 64512

R1(config-router)#net 10.1.255.0 mask 255.255.255.252

R1(config-router)#net 172.16.1.0 mask 255.255.255.0

R1(config-router)#nei 10.1.255.2 remote 64513

R2(config)#router bgp 64513

R2(config-router)#net 10.1.255.0 mask 255.255.255.252

R2(config-router)#net 192.168.1.0 mask 255.255.255.0

R2(config-router)#nei 10.1.255.1 remote 64512

3、檢視一下R1和R2的BGP路由表,能學到對方的BGP路由:

R1#sh ip route bgp

B    192.168.1.0/24 [20/0] via 10.1.255.2, 00:09:20

R2#sh ip route bgp

     172.16.0.0/24 is subnetted, 1 subnets

B       172.16.1.0 [20/0] via 10.1.255.1, 00:10:17

三、配置BGP的鄰居認證:

1、先在R1上做上鄰居認證,并設定密碼為supercisco:

R1(config)#router bgp 64512

R1(config-router)#nei 10.1.255.2 password supercisco

2、發現一配置上去就有反映了:

*Mar  1 00:40:15.767: %TCP-6-BADAUTH: No MD5 digest from 10.1.255.2(59707) to 10.1.255.1(179)

*Mar  1 00:40:16.287: %TCP-6-BADAUTH: No MD5 digest from 10.1.255.2(59707) to 10.1.255.1(179)

3、檢視一下簡單BGP彙總:

R1#sh ip bgp summary

………………

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

10.1.255.2      4 64513      42      46        0    0    0 00:00:43 Active

4、檢視一下BGP路由表,發現沒有172.16.1.0/24的路由:

R2#sh ip route

     10.0.0.0/30 is subnetted, 1 subnets

C       10.1.255.0 is directly connected, Serial1/0

C    192.168.1.0/24 is directly connected, Loopback0  (沒有學到R1的BGP路由)

R2#sh ip bgp

BGP table version is 7, local router ID is 192.168.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

              r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path

*> 10.1.255.0/30    0.0.0.0                  0         32768 i

*> 192.168.1.0      0.0.0.0                  0         32768 i(沒有R1 loopback BGP路由存在)

5、再到R2去配上鄰居認證:

R2(config-router)#nei 10.1.255.1 password supercisco

四、驗證鄰居認證:

1、一配置上去,發現鄰居馬上就起來了:

R2(config-router)#

*Mar  1 00:53:36.203: %BGP-5-ADJCHANGE: neighbor 10.1.255.1 Up

2、到R2上看一下BGP 簡單彙總和BGP路由:

R2#sh ip bgp summary

……………………

10.1.255.1      4 64512      58      57        8    0    0 00:07:09        2 (通過鄰居學到了兩條)

BGP table version is 9, local router ID is 192.168.1.1

*> 10.1.255.0/30    0.0.0.0                  0         32768 i

*> 192.168.1.0      0.0.0.0                  0         32768 i

3、看一下的路由表,兩邊都有了:

R1#sh ip route

C       172.16.1.0 is directly connected, Loopback0

C       10.1.255.0 is directly connected, Serial1/1

B    192.168.1.0/24 [20/0] via 10.1.255.2, 00:01:41

B       172.16.1.0 [20/0] via 10.1.255.1, 00:01:54

C    192.168.1.0/24 is directly connected, Loopback0

本文轉自wxs-163 51CTO部落格,原文連結:http://blog.51cto.com/supercisco/269372

繼續閱讀