BGP策略实验

一、实验要求

二、实验分析

1.先配置IP
2.再配置BGP
3.配置BGP策略

三、实验过程

要求
1.

[r4]ip ip-prefix aa permit 192.168.10.0 24
[r4]route-policy aa permit node 10
[r4-route-policy]if-match ip-prefix aa
[r4-route-policy]apply preferred-value 100
[r4]route-policy aa permit node 20
[r4]bgp 400
[r4-bgp]peer 24.0.0.2 route-policy aa import 

[r4]ip ip-prefix bb permit 192.168.11.0 24
[r4]route-policy aa permit node 15
[r4-route-policy]if-match ip-prefix bb
[r4-route-policy]apply as-path 123 123 500 overwrite 

MED干涉他人的，在R2和R3上配置，出接口
代码忘记记下来。

4.5. 相同

[r1]ip ip-prefix aa permit 192.168.1.0 24
[r1]ip ip-prefix bb permit 192.168.2.0 24
[r1]route-policy aa permit node 10
[r1-route-policy]if-match ip-prefix aa
[r1-route-policy]apply local-preference 200
[r1]route-policy aa permit node 20[r1]route-policy bb permit node 10
[r1-route-policy]if-match ip-prefix bb
[r1-route-policy]apply local-preference 200
[r1]route-policy bb permit node 20[r1-bgp]peer 2.2.2.2 route-policy aa import 
[r1-bgp]peer 3.3.3.3 route-policy bb import 

负载均衡8条件相同，修改最大负载条目修改成2.
[r1-bgp]maximum load-balancing 2

拒绝as123的as-path
[r5]ip as-path-filter 1 deny ^123$
[r5]ip as-path-filter 1 permit .*
[r5]bgp 500 
[r5-bgp]peer 15.0.0.1 as-path-filter 1 import 

[r1]ip ip-prefix cc permit 192.168.3.0 24
[r1]route-policy aa permit node 15
[r1-route-policy]if-match ip-prefix cc
[r1-route-policy]apply community no-export
[r1]route-policy bb permit node 15
[r1-route-policy]if-match ip-prefix cc 
[r1-route-policy]apply community no-export

四、实验图

1.IP图





2.BGP图



3.BGP策略图