BGP基础建邻+宣告实验

 一、实验拓扑：

 二、实验要求：

除R5的5.5.0环以外，其他所有环回均可互相访问。

三、实验配置：

R1：

//IP配置
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sys R1
[R1]int l0
[R1-LoopBack0]ip add 1.1.1.1 24
[R1-LoopBack0]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
 
//BGP配置，EBGP这里使用物理接口作为下一跳IP地址
[R1]bgp 1
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 12.1.1.2 as-number 2
 
//BGP宣告
[R1]bgp 1
[R1-bgp]network 1.1.1.0 24

R2:

//IP配置
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sys R2
[R2]int l0
[R2-LoopBack0]ip add 2.2.2.2 24
[R2-LoopBack0]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 23.1.1.1 24
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 12.1.1.2 24
 
//OSPF配置
[R2]ospf 1
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255
 
//BGP配置，EBGP使用的是物理接口作为IP地址，IBGP这里使用环回接口作为IP地址
[R2]bgp 2
[R2-bgp]router-id 2.2.2.2	
[R2-bgp]peer 12.1.1.1 as-number 1
 
[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
 
//BGP宣告
[R2]bgp 2
[R2-bgp]network 2.2.2.0 24
 
[R2-bgp]peer 3.3.3.3 next-hop-local
[R2-bgp]peer 4.4.4.4 next-hop-local

R3:

//IP配置
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sys R3
[R3]int l0
[R3-LoopBack0]ip add 3.3.3.3 24
[R3-LoopBack0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 23.1.1.2 24
[R3-GigabitEthernet0/0/1]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 34.1.1.1 24
 
//OSPF配置
[R3]ospf 1
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 34.1.1.0 0.0.0.255
 
//BGP配置
[R3]bgp 2
[R3-bgp]router-id 3.3.3.3
[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
 
//BGP宣告
[R3]bgp 2
[R3-bgp]network 3.3.3.0 24
 
[R3-bgp]peer 4.4.4.4 next-hop-local
[R3-bgp]peer 2.2.2.2 next-hop-local

R4:

//IP配置
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sys R4
[R4]int l0
[R4-LoopBack0]ip add 4.4.4.4 24
[R4-LoopBack0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 34.1.1.2 24 
[R4-GigabitEthernet0/0/1]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 45.1.1.1 24
[R4-GigabitEthernet0/0/0]int g0/0/2
[R4-GigabitEthernet0/0/2]ip add 54.1.1.1 24
 
//缺省路由配置
[R4]ip route-static 5.5.5.5 32 45.1.1.2
[R4]ip route-static 5.5.5.5 32 54.1.1.2
 
//OSPF配置
[R4]ospf 1
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 4.4.4.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]network 34.1.1.0 0.0.0.255
 
//BGP配置
[R4]bgp 2
[R4-bgp]router-id 4.4.4.4
[R4-bgp]peer 2.2.2.2 as-number 2
[R4-bgp]peer 2.2.2.2 connect-interface LoopBack 0
 
[R4-bgp]peer 3.3.3.3 as-number 2
[R4-bgp]peer 3.3.3.3 connect-interface LoopBack 0
 
[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
 
//BGP宣告
[R4]bgp 2
[R4-bgp]network 4.4.4.0 24
 
[R4-bgp]peer 5.5.5.5 next-hop-local
[R4-bgp]peer 3.3.3.3 next-hop-local
[R4-bgp]peer 2.2.2.2 next-hop-local

R5:

//IP配置
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]sys R5
[R5]int lo0
[R5-LoopBack0]ip add 5.5.5.5 24
[R5-LoopBack0]int lo1
[R5-LoopBack1]ip add 99.1.1.1 24
[R5-LoopBack1]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 45.1.1.2 24 
[R5-GigabitEthernet0/0/1]int g0/0/2
[R5-GigabitEthernet0/0/2]ip add 54.1.1.2 24
 
//缺省路由配置
[R5]ip route-static 4.4.4.0 24 54.1.1.1
[R5]ip route-static 4.4.4.0 24 45.1.1.1
 
 
//BGP配置
[R5]bgp 3
[R5-bgp]router-id 5.5.5.5	
[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
 
//BGP宣告
[R5]bgp 3
[R5-bgp]network 5.5.5.0 24
[R5-bgp]network 99.1.1.0 24

四、测试：

ping：

 

 

 

 display：