4.10 优选拥有最短的cluster-list长度路由

图片[1]-4.10 优选拥有最短的cluster-list长度路由-大赛人网
图4-10  优选拥有最短的cluster-list长度路由网络拓扑

1.R1配置OSPF

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R1-ospf-1-area-0.0.0.0]network 13.1.1.0 0.255.255.255

2.R2配置OSPF

[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R2-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255

3.R3配置OSPF

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 13.1.1.0 0.255.255.255
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255
[R3-ospf-1-area-0.0.0.0]network 34.1.1.0 0.255.255.255

4.R4配置OSPF

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.0]network 34.1.1.0 0.255.255.255

5.R1配置BGP(R1、R2、R3全互联)

[R1]bgp 1234
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 2.2.2.2 as-number 1234
[R1-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R1-bgp]peer 3.3.3.3 as-number 1234
[R1-bgp]peer 3.3.3.3 connect-interface LoopBack 0

6.R2配置BGP(R1、R2、R3全互联)

[R2]bgp 1234
[R2-bgp]router-id 2.2.2.2
[R2-bgp]peer 1.1.1.1 as-number 1234
[R2-bgp]peer 1.1.1.1 connect-interface LoopBack 0
[R2-bgp]peer 3.3.3.3 as-number 1234
[R2-bgp]peer 3.3.3.3 connect-interface LoopBack 0

7.R3配置BGP(R1、R2、R3全互联)

[R3]bgp 1234
[R3-bgp]router-id 3.3.3.3
[R3-bgp]peer 1.1.1.1 as-number 1234
[R3-bgp]peer 1.1.1.1 connect-interface LoopBack 0
[R3-bgp]peer 2.2.2.2 as-number 1234
[R3-bgp]peer 2.2.2.2 connect-interface LoopBack 0

8.R3、R4配置IBGP

[R3-bgp]peer 4.4.4.4 as-number 1234
[R3-bgp]peer 4.4.4.4 connect-interface LoopBack 0

[R4]bgp 1234
[R4-bgp]router-id 4.4.4.4
[R4-bgp]peer 3.3.3.3 as-number 1234
[R4-bgp]peer 3.3.3.3 connect-interface LoopBack 0

9.配置R1、R2为RR(反射器),R1、R2的client为R3。配置R3为RR,R3的client为R4

[R1-bgp]peer 3.3.3.3 reflect-client 
[R2-bgp]peer 3.3.3.3 reflect-client 
[R3-bgp]peer 4.4.4.4 reflect-client

10.R4创建LoopBack 1,宣告到BGP

[R4]interface LoopBack 1
[R4-LoopBack1]ip address 44.44.44.44 32
[R4-bgp]network 44.44.44.44 32

11.R1查看BGP路由信息

[R1]display bgp routing-table 
 *>i  44.44.44.44/32     4.4.4.4         0          100        0      i
 * i                     4.4.4.4         0          100        0      i

12.R1查看BGP路由信息详细信息

R2路由Cluster list: 2.2.2.2, 3.3.3.3,R3路由 Cluster list: 3.3.3.3,R1选择R3Cluster list值小的路由。
[R1]display bgp routing-table 44.44.44.44
 BGP local router ID : 1.1.1.1
 Local AS number : 1234
 Paths:   2 available, 1 best, 1 select
 BGP routing table entry information of 44.44.44.44/32:
 RR-client route.
 From: 3.3.3.3 (3.3.3.3)
 Route Duration: 00h01m23s  
 Relay IP Nexthop: 13.1.1.3
 Relay IP Out-Interface: GigabitEthernet0/0/1
 Original nexthop: 4.4.4.4
 Qos information : 0x0
 AS-path Nil, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, best, select, active, pre 255, IGP cost 2
 Originator:  4.4.4.4
 Cluster list: 3.3.3.3
 Advertised to such 1 peers:
    2.2.2.2
 BGP routing table entry information of 44.44.44.44/32:
 From: 2.2.2.2 (2.2.2.2)
 Route Duration: 00h01m23s  
 Relay IP Nexthop: 13.1.1.3
 Relay IP Out-Interface: GigabitEthernet0/0/1
 Original nexthop: 4.4.4.4
 Qos information : 0x0
 AS-path Nil, origin igp, MED 0, localpref 100, pref-val 0, valid, internal, pre 255, IGP cost 2, not preferred for Cluster List
 Originator:  4.4.4.4
 Cluster list: 2.2.2.2, 3.3.3.3
 Not advertised to any peer yet
© 版权声明
THE END
喜欢就支持一下吧
点赞8 分享
评论 抢沙发
头像
欢迎您留下宝贵的见解!
提交
头像

昵称

取消
昵称

    请登录后查看评论内容