![](https://img-blog.csdnimg.cn/bc8c72e5832e4da09936d7b167b43a1f.png)
一、给每个路由器配置ip地址
AR6-1:
#1、添加ip地址
interface GigabitEthernet0/0/0
ip address 1.1.1.1 255.255.255.0
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#2、配置BGP对等体
bgp 100 // 配置bgp的AS号为100
peer 1.1.1.2 as-number 200 //配置对等体ip地址1.1.1.2进入到bgp 200
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AR7-1:
#1、添加ip地址
interface GigabitEthernet0/0/0
ip address 1.1.1.2 255.255.255.0
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interface GigabitEthernet0/0/1
ip address 2.2.2.1 255.255.255.0
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#添加环回地址
interface LoopBack0
ip address 4.4.4.4 255.255.255.0
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#宣告ip地址和环回地址
ospf 1 router-id 4.4.4.4
area 0.0.0.0 //创建区域
network 1.1.1.0 0.0.0.255 //宣告网段
network 2.2.2.1 0.0.0.0 //宣告明细ip地址
network 4.4.4.4 0.0.0.0 //宣告环回地址
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bgp 200 //进入bgp,进入指定的AS号
router-id 4.4.4.4 //添加路由ID
peer 1.1.1.1 as-number 100 //配置对等体
peer 5.5.5.5 as-number 200 //配置对等体
peer 5.5.5.5 connect-interface LoopBack0 //指定用loopback 0
import-route ospf 1
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AR8-1
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interface GigabitEthernet0/0/0
ip address 2.2.2.2 255.255.255.0
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interface GigabitEthernet0/0/1
ip address 3.3.3.1 255.255.255.0
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#添加环回地址
interface LoopBack0
ip address 5.5.5.5 255.255.255.0
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#宣告
area 0.0.0.0
network 2.2.2.2 0.0.0.0
network 3.3.3.0 0.0.0.255
network 5.5.5.5 0.0.0.0
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bgp 200
router-id 5.5.5.5
peer 3.3.3.2 as-number 300
peer 4.4.4.4 as-number 200
peer 4.4.4.4 connect-interface LoopBack0
import-route ospf 1
AR9-1
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interface GigabitEthernet0/0/0
ip address 3.3.3.2 255.255.255.0
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