一.实验要求：
1、AS1中存在两个环回，一个地址为192.168.1.0/24，该地址不能在任何协议中宣告， AS3中存在两个环回，一个地址为192.168.2.0/24，该地址不能在任何协议中宣告，最终要求这两个环回可以ping通
2、R1-R8的建邻环回用x.x.x.x/32表示
3、整个A2的Ip地址为172.16.0.0/16，R3-R7上各有一个业务网段，请合理划分;并且其内部配置osPF协议
4、AS间的骨干链路IP地址随意定制，
5、使用BGP协议让整个网络所有设备的环回可以互相访问，
6、减少路由条目数量，避免环路出现;
二.实验拓扑图
三.实验过程
1.R1配置
R1\]int g 0/0/0 \[R1-GigabitEthernet0/0/0\]ip address 12.1.1.1 24 \[R1-GigabitEthernet0/0/0\]int l 0 \[R1-LoopBack0\]ip address 1.1.1.1 32 \[R1-LoopBack0\]int l 1 \[R1-LoopBack1\]ip address 192.168.1.1 24
2.R2配置
R2\]int g 0/0/0 \[R2-GigabitEthernet0/0/0\]ip address 12.1.1.2 24 \[R2-GigabitEthernet0/0/1\]int g 0/0/1 \[R2-GigabitEthernet0/0/1\]ip address 172.16.1.1 30 \[R2-GigabitEthernet0/0/1\]int g 0/0/2 \[R2-GigabitEthernet0/0/2\]ip address 172.16.1.21 30 \[R2-GigabitEthernet0/0/0\]int l 0 \[R2-LoopBack0\]ip address 2.2.2.2 32
3.R3配置
R3\]int g 0/0/0 \[R3-GigabitEthernet0/0/0\]ip address 172.16.1.2 30 \[R3-GigabitEthernet0/0/0\]int g 0/0/1 \[R3-GigabitEthernet0/0/1\]ip address 172.16.1.5 30 \[R3-GigabitEthernet0/0/1\]int l 0 \[R3-LoopBack0\]ip address 3.3.3.3 32 \[R3-LoopBack0\]int l 1 \[R3-LoopBack1\]ip address 172.16.3.3 24
R4\]int g 0/0/0 \[R4-GigabitEthernet0/0/0\]ip address 172.16.1.6 30 \[R4-GigabitEthernet0/0/0\]int g 0/0/1 \[R4-GigabitEthernet0/0/1\]ip address 172.16.1.9 30 \[R4-GigabitEthernet0/0/1\]int l 0 \[R4-LoopBack0\]ip address 4.4.4.4 32 \[R4-LoopBack0\]int l 1 \[R4-LoopBack1\]ip address 172.16.4.4 24
5.R5配置
R5\]int g 0/0/0 \[R5-GigabitEthernet0/0/0\]ip address 172.16.1.22 30 \[R5-GigabitEthernet0/0/0\]int g 0/0/1 \[R5-GigabitEthernet0/0/1\]ip address 172.16.1.17 30 \[R5-GigabitEthernet0/0/1\]int l 0 \[R5-LoopBack0\]ip address 5.5.5.5 32 \[R5-LoopBack0\]int l 1 \[R5-LoopBack1\]ip address 172.16.5.5 24
6.R配置
R6\]int g 0/0/0 \[R6-GigabitEthernet0/0/0\]ip address 172.16.1.18 30 \[R6-GigabitEthernet0/0/0\]int g 0/0/1 \[R6-GigabitEthernet0/0/1\]ip address 172.16.1.13 30 \[R6-GigabitEthernet0/0/1\]int l 0 \[R6-LoopBack0\]ip address 6.6.6.6 32 \[R6-LoopBack0\]int l 1 \[R6-LoopBack1\]ip address 172.16.6.6 24
7.R7配置
R7\]int g 0/0/0 \[R7-GigabitEthernet0/0/0\]ip address 172.16.1.14 30 \[R7-GigabitEthernet0/0/0\]int g0/0/1 \[R7-GigabitEthernet0/0/1\]ip address 172.16.1.10 30 \[R7-LoopBack1\]int g 0/0/2 \[R7-GigabitEthernet0/0/2\]ip address 34.1.1.7 24 \[R7-GigabitEthernet0/0/1\]int l 0 \[R7-LoopBack0\]ip address 7.7.7.7 32 \[R7-LoopBack0\]int l 1 \[R7-LoopBack1\]ip address 172.16.7.7 24
8.R8配置
R8\]int g 0/0/0 \[R8-GigabitEthernet0/0/0\]ip address 34.1.1.8 24 \[R8-GigabitEthernet0/0/0\]int l 0 \[R8-LoopBack0\]ip address 8.8.8.8 32 \[R8-LoopBack0\]int l 1 \[R8-LoopBack1\]ip address 172.16.8.8 24
运行结果
