BGP简单实验

目录

1.拓扑结构的搭建

2.IP地址的规划和配置

3.静态路由的配置

4.动态路由的配置

5.EBGP的配置

6.IBGP的配置

7.BGP的宣告

8.测试

---

实验要求

使用BGP协议实现通信

实验步骤 

1.拓扑结构的搭建

2.IP地址的规划和配置

R1：

[R1]interface LoopBack 0
[R1-LoopBack0]ip address 1.1.1.1 24
[R1-LoopBack0]interface LoopBack 1
[R1-LoopBack1]ip address 172.16.1.1 24
[R1-LoopBack1]interface g0/0/0
[R1-GigabitEthernet0/0/0]ip address 11.1.1.1 24

R2：

[R2]interface lo
[R2]interface LoopBack 0
[R2-LoopBack0]ip address 2.2.2.2 24
[R2-LoopBack0]interface g0/0/0
[R2-GigabitEthernet0/0/0]ip address 11.1.1.2 24
[R2-GigabitEthernet0/0/0]interface g0/0/1   
[R2-GigabitEthernet0/0/1]ip address 22.1.1.1 24

R3：

[R3]interface LoopBack 0
[R3-LoopBack0]ip address 3.3.3.3 24
[R3-LoopBack0]interface g0/0/0
[R3-GigabitEthernet0/0/0]ip address 22.1.1.2 24
[R3-GigabitEthernet0/0/0]interface g0/0/1      
[R3-GigabitEthernet0/0/1]ip address 33.1.1.1 24

R4：

[R4]interface LoopBack 0
[R4-LoopBack0]ip address 4.4.4.4 24
[R4-LoopBack0]interface g0/0/0
[R4-GigabitEthernet0/0/0]ip address 33.1.1.2 24
[R4-GigabitEthernet0/0/0]interface g0/0/1      
[R4-GigabitEthernet0/0/1]ip address 44.1.1.1 24
[R4-GigabitEthernet0/0/1]interface g0/0/2      
[R4-GigabitEthernet0/0/2]ip address 55.1.1.1 24

R5：

[R5]interface LoopBack 0
[R5-LoopBack0]ip address 5.5.5.5 24
[R5-LoopBack0]interface LoopBack 1
[R5-LoopBack1]ip address 172.16.2.1 24
[R5-LoopBack1]interface g0/0/0
[R5-GigabitEthernet0/0/0]ip address 44.1.1.2 24
[R5-GigabitEthernet0/0/0]interface g0/0/1      
[R5-GigabitEthernet0/0/1]ip address 55.1.1.2 24

3.静态路由的配置

R1和R2之间   R4和R5之间

[R1]ip route-static 2.2.2.0 24 11.1.1.2 
[R2]ip route-static 1.1.1.0 24 11.1.1.1
[R4]ip route-static 5.5.5.0 24 44.1.1.2
[R4]ip route-static 5.5.5.0 24 55.1.1.2
[R5]ip route-static 4.4.4.0 24 44.1.1.1
[R5]ip route-static 4.4.4.0 24 55.1.1.1

4.动态路由的配置

AS2内起RIP

[R2]rip 1 
[R2-rip-1]version 2
[R2-rip-1]network 22.0.0.0
[R2-rip-1]network 2.0.0.0

[R3]rip 1
[R3-rip-1]version 2
[R3-rip-1]network 22.0.0.0
[R3-rip-1]network 3.0.0.0
[R3-rip-1]network 33.0.0.0

[R4]rip 1
[R4-rip-1]version 2
[R4-rip-1]network 33.0.0.0
[R4-rip-1]network 4.0.0.0

5.EBGP的配置

R1和R2之间

[R1]bgp 1
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 2.2.2.2 as-number 2
[R1-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R1-bgp]peer 2.2.2.2 ebgp-max-hop 2

[R2]bgp 2
[R2-bgp]router-id 2.2.2.2
[R2-bgp]peer 1.1.1.1 as-number 1
[R2-bgp]peer 1.1.1.1 connect-interface LoopBack 0
[R2-bgp]peer 1.1.1.1 ebgp-max-hop 2

R4和R5之间

[R4]bgp 2
[R4-bgp]peer 5.5.5.5 as-number 3
[R4-bgp]peer 5.5.5.5 connect-interface LoopBack 0
[R4-bgp]peer 5.5.5.5 ebgp-max-hop 2

[R5]bgp 3
[R5-bgp]router-id 3.3.3.3
[R5-bgp]peer 4.4.4.4 as-number 2
[R5-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[R5-bgp]peer 4.4.4.4 ebgp-max-hop 2

6.IBGP的配置

区域2中的R2、R3、R4

[R2]bgp 2
[R2-bgp]peer 3.3.3.3 as-number 2
[R2-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R2-bgp]peer 4.4.4.4 as-number 2
[R2-bgp]peer 4.4.4.4 connect-interface LoopBack 0

[R3]bgp 2
[R3-bgp]peer 2.2.2.2 as-number 2
[R3-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R3-bgp]peer 4.4.4.4 as-number 2
[R3-bgp]peer 4.4.4.4 connect-interface LoopBack 0

[R4]bgp 2
[R4-bgp]peer 3.3.3.3 as-number 2
[R4-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R4-bgp]peer 4.4.4.4 as-number 2
[R4-bgp]peer 4.4.4.4 connect-interface LoopBack 0

7.BGP的宣告

将R1上的172.16.1.0网段进行宣告

[R1]bgp 1
[R1-bgp]network 172.16.1.0 24

将R5上的172.16.2.0网段进行宣告

[R5]bgp 3
[R5-bgp]network 172.16.2.0 24

R1、R2、R3之间进行下一跳的配置，使路由表可以使用

*表示可用    >表示条目优秀—可以加表，可以传递（共享给本地的其他邻居）

状态处的i表示该条目通过IBGP邻居关系学习

[R2]bgp 2
[R2-bgp]peer 3.3.3.3 next-hop-local
[R2-bgp]peer 4.4.4.4 next-hop-local

[R4]bgp 2
[R4-bgp]peer 3.3.3.3 next-hop-local
[R4-bgp]peer 2.2.2.2 next-hop-local

8.测试

R1和R5的BGP路由表

 用R1的环回1pingR5的环回1