要求：
1、AS1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AS2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。
配置：
1、配置ip
[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 24
[R1-LoopBack0]int l 1
[R1-LoopBack1]ip address 192.168.1.1 24
[R2]int g 0/0/0
[R2-GigabitEthernet0/0/0]ip address 12.1.1.2 24
[R2-GigabitEthernet0/0/0]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-GigabitEthernet0/0/2]int l 0
[R2-LoopBack0]ip address 2.2.2.2 32
[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 171.16.1.6 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
[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
[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
[R7]int g 0/0/0
[R7-GigabitEthernet0/0/0]ip address 172.16.1.10 30
[R7-GigabitEthernet0/0/0]int g 0/0/1
[R7-GigabitEthernet0/0/1]ip address 172.16.1.14 30
[R7-GigabitEthernet0/0/1]int g 0/0/2
[R7-GigabitEthernet0/0/2]ip address 34.1.1.7 24
[R7-GigabitEthernet0/0/2]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
[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 24
[R8-LoopBack0]int l 1
[R8-LoopBack1]ip address 192.168.2.8 24
2、配置OSPF协议
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]a 0
[R2-ospf-1-area-0.0.0.0]net 172.16.1.1 0.0.0.0
[R2-ospf-1-area-0.0.0.0]net 172.16.1.21 0.0.0.0
[R2-ospf-1-area-0.0.0.0]net 2.2.2.2 0.0.0.0
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]a 0
[R3-ospf-1-area-0.0.0.0]net 172.16.1.2 0.0.0.0
[R3-ospf-1-area-0.0.0.0]net 172.16.1.5 0.0.0.0
[R3-ospf-1-area-0.0.0.0]net 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]net 172.16.3.0 0.0.0.255
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]a 0
[R4-ospf-1-area-0.0.0.0]net 172.16.1.6 0.0.0.0
[R4-ospf-1-area-0.0.0.0]net 172.16.1.9 0.0.0.0
[R4-ospf-1-area-0.0.0.0]net 4.4.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.0]net 172.16.4.0 0.0.0.255
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]a 0
[R5-ospf-1-area-0.0.0.0]net 172.16.1.22 0.0.0.0
[R5-ospf-1-area-0.0.0.0]net 172.16.1.17 0.0.0.0
[R5-ospf-1-area-0.0.0.0]net 5.5.5.5 0.0.0.0
[R5-ospf-1-area-0.0.0.0]net 172.16.5.0 0.0.0.255
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]a 0
[R6-ospf-1-area-0.0.0.0]net 172.16.1.18 0.0.0.0
[R6-ospf-1-area-0.0.0.0]net 172.16.1.13 0.0.0.0
[R6-ospf-1-area-0.0.0.0]net 6.6.6.6 0.0.0.0
[R6-ospf-1-area-0.0.0.0]net 172.16.6.0 0.0.0.255
[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]a 0
[R7-ospf-1-area-0.0.0.0]net 172.16.1.14 0.0.0.0
[R7-ospf-1-area-0.0.0.0]net 7.7.7.7 0.0.0.0
[R7-ospf-1-area-0.0.0.0]net 172.16.7.0 0.0.0.255
3、配置BGP
[R1]bgp 1
[R1-bgp]peer 12.1.1.2 as-number 2
[R2]bgp 64512
[R2-bgp]confederation id 2
[R2-bgp]confederation peer-as 64513
[R2-bgp]peer 12.1.1.1 as-number 1
[R2-bgp]peer 3.3.3.3 as-number 64512
[R2-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R2-bgp]peer 3.3.3.3 next-hop-local
[R2-bgp]peer 172.16.1.22 as-number 64513
[R2-bgp]peer 172.16.1.22 next-hop-local
[R3]bgp 64512
[R3-bgp]confederation id 2
[R3-bgp]peer 2.2.2.2 as-number 64512
[R3-bgp]peer 2.2.2.2 connect-interface LoopBack 0
[R3-bgp]peer 4.4.4.4 as-number 64512
[R3-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[R4]bgp 64512
[R4-bgp]confederation id 2
[R4-bgp]confederation peer-as 64513
[R4-bgp]peer 3.3.3.3 as-number 64512
[R4-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R4-bgp]peer 7.7.7.7 as-number 64513
[R4-bgp]peer 7.7.7.7 connect-interface LoopBack 0
[R5]bgp 64513
[R5-bgp]confederation id 2
[R5-bgp]confederation peer-as 64512
[R5-bgp]peer 172.16.1.21 as-number 64512
[R5-bgp]peer 172.16.1.21 next-hop-local
[R5-bgp]peer 6.6.6.6 as-number 64513
[R5-bgp]peer 6.6.6.6 connect-interface LoopBack 0
[R5-bgp]peer 6.6.6.6 next-hop-local
[R6]bgp 64513
[R6-bgp]confederation id 2
[R6-bgp]peer 5.5.5.5 as-number 64513
[R6-bgp]peer 5.5.5.5 connect-interface LoopBack 0
[R6-bgp]peer 7.7.7.7 as-number 64513
[R6-bgp]peer 7.7.7.7 connect-interface LoopBack 0
[R7]bgp 64513
[R7-bgp]confederation id 2
[R7-bgp]confederation peer-as 64512
[R7-bgp]peer 4.4.4.4 as-number 64512
[R7-bgp]peer 4.4.4.4 connect-interface LoopBack 0
[R7-bgp]peer 4.4.4.4 next-hop-local
[R7-bgp]peer 6.6.6.6 as-number 64513
[R7-bgp]peer 6.6.6.6 connect-interface LoopBack 0
[R7-bgp]peer 6.6.6.6 next-hop-local
[R7-bgp]peer 34.1.1.8 as-number 3
[R8]bgp 3
[R8-bgp]peer 34.1.1.7 as-number
4、宣告网段
[R1]bgp 1
[R1]net 1.1.1.1 32
[R3]bgp 64512
[R3]net 172.16.3.0 24
[R4]bgp 64512
[R4]net 172.16.4.0 24
[R5]bgp 64512
[R5]net 172.16.5.0 24
[R6]bgp 64512
[R6]net 172.16.6.0 24
[R7]bgp 64512
[R7]net 172.16.7.0 24
[R8]bgp 3
[R8]net 8.8.8.8 32
[R3]bgp 64512
[R3-bgp]peer 2.2.2.2 reflect-client
[R3-bgp]peer 4.4.4.4 reflect-client
[R6]bgp 64513
[R6-bgp]peer 5.5.5.5 reflect-client
[R6-bgp]peer 7.7.7.7 reflect-client
5、路由聚合
[R2]bgp 64512
[R2-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set
[R7]bgp 64513
[R7-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set
