BGP联盟综合实验

• 实验top

• 实验目的

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AS2的Ip地址为172.16.8.0/16，R3-R7上各有一个业务网段，请合理划分;并且其内部配置0SPF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;

三、实验步骤

1、根据所给的ip地址配置ip

[R1]int g 0/0/0

[R1-GigabitEthernet0/0/0]ip add 12.1.1.1 24

[R1-GigabitEthernet0/0/0]int l0

[R1-LoopBack0]ip add 1.1.1.1 32

[R1-LoopBack0]int l1

[R1-LoopBack1]ip add 192.168.1.1 24

[R2]int g 0/0/0

[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24

[R2-GigabitEthernet0/0/0]int l1

[R2-LoopBack1]ip add 2.2.2.2 32

[R2-LoopBack1]int g 0/0/1

[R2-GigabitEthernet0/0/1]ip add 172.16.1.1 30

[R2-GigabitEthernet0/0/1]int g 0/0/2

[R2-GigabitEthernet0/0/2]ip add 172.16.1.21 30

[R3]int g 0/0/0

[R3-GigabitEthernet0/0/0]ip add 172.16.1.2 30

[R3-GigabitEthernet0/0/0]int g 0/0/1

[R3-GigabitEthernet0/0/1]ip add 172.16.1.5 30

[R3-GigabitEthernet0/0/1]int l0

[R3-LoopBack0]ip add 3.3.3.3 32

[R3-LoopBack0]int l1

[R3-LoopBack1]ip add 172.16.3.3 24

[R4]int g 0/0/0

[R4-GigabitEthernet0/0/0]ip add 172.16.1.6 30

[R4-GigabitEthernet0/0/0]int g 0/0/1

[R4-GigabitEthernet0/0/1]ip add 172.16.1.9 30

[R4-GigabitEthernet0/0/1]int l0

[R4-LoopBack0]ip add 4.4.4.4 32

[R4-LoopBack0]int l1

[R4-LoopBack1]ip add 172.16.4.4 24

[R5]int g 0/0/0

[R5-GigabitEthernet0/0/0]ip add 172.16.1.22 30

[R5-GigabitEthernet0/0/0]int g 0/0/1

[R5-GigabitEthernet0/0/1]ip add 172.16.1.17 30

[R5-GigabitEthernet0/0/1]int l0

[R5-LoopBack0]ip add 5.5.5.5 32

[R5-LoopBack0]int l1

[R5-LoopBack1]ip add 172.16.5.5 24

[R6]int g 0/0/0

[R6-GigabitEthernet0/0/0]ip add 172.16.1.18 30

[R6-GigabitEthernet0/0/0]int g 0/0/1

[R6-GigabitEthernet0/0/1]ip add 172.16.1.13 30

[R6-GigabitEthernet0/0/1]int l0

[R6-LoopBack0]ip add 6.6.6.6 32

[R6-LoopBack0]int l1

[R6-LoopBack1]ip add 172.16.6.6 24

[R7]int g 0/0/0

[R7-GigabitEthernet0/0/0]ip add 172.16.1.14 30

[R7-GigabitEthernet0/0/0]int g 0/0/1

[R7-GigabitEthernet0/0/1]ip add 172.16.1.10 30

[R7-GigabitEthernet0/0/1]int g 0/0/2

[R7-GigabitEthernet0/0/2]ip add 34.1.1.7 24

[R7-GigabitEthernet0/0/2]int l0

[R7-LoopBack0]ip add 7.7.7.7 32

[R7-LoopBack0]int l1

[R7-LoopBack1]ip add 172.16.7.7 24

[R8]int g 0/0/0

[R8-GigabitEthernet0/0/0]ip add 34.1.1.8 24

[R8-GigabitEthernet0/0/0]int l0

[R8-LoopBack0]ip add 8.8.8.8 32

[R8-LoopBack0]int l1

[R8-LoopBack1]ip add 192.168.2.8 24

2、宣告网段实现内部网通

[R2]ospf 1 router-id 2.2.2.2

[R2-ospf-1]a 0

[R2-ospf-1-area-0.0.0.0]net 2.2.2.2 0.0.0.0

[R2-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.255

[R3]ospf 1 router-id 3.3.3.3

[R3-ospf-1]a 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 172.16.1.0 0.0.0.255

[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 4.4.4.4 0.0.0.0

[R4-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.255

[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 5.5.5.5 0.0.0.0

[R5-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.255

[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

[R6-ospf-1-area-0.0.0.0]network 6.6.6.6 0.0.0.0

[R6-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.255

[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]network 7.7.7.7. 0.0.0.0

[R7-ospf-1-area-0.0.0.0]net 172.16.1.0 0.0.0.255

[R7-ospf-1-area-0.0.0.0]net 172.16.7.0 0.0.0.255

3、建立bgp邻居

[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 1

[R2-bgp]peer 3.3.3.3 as 64512

[R2-bgp]peer 3.3.3.3 connect-interface l0

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

[R2-bgp]peer 172.16.1.22 as 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 connect-interface l0

[R3-bgp]peer 4.4.4.4 as 64512

[R3-bgp]peer 4.4.4.4 connect-interface l0

[R4]bgp 64512

[R4-bgp]confederation id 2

[R4-bgp]peer 3.3.3.3 as 64512

[R4-bgp]peer 3.3.3.3 connect-interface l0

[R5]bgp 64513

[R5-bgp]confederation id 2

[R5-bgp]confederation peer-as 64512

[R5-bgp]peer 6.6.6.6 as 64513

[R5-bgp]peer 6.6.6.6 connect-interface l0

[R5-bgp]peer 6.6.6.6 next-hop-local

[R5-bgp]peer 172.16.1.21 as 64512

[R5-bgp]peer 172.16.1.21 next-hop-loca

[R6]bgp 64513

[R6-bgp]confederation id 2

[R6-bgp]peer 5.5.5.5 as 64513

[R6-bgp]peer 5.5.5.5 connect-interface l0

[R6-bgp]peer 7.7.7.7 as 64513

[R6-bgp]peer 7.7.7.7 connect-interface l0

[R7]bgp 64513

[R7-bgp]confederation id 2

[R7-bgp]peer 6.6.6.6 as 64513

[R7-bgp]peer 6.6.6.6 connect-interface l0

[R7-bgp]peer 6.6.6.6 next-hop-local

[R7-bgp]peer 34.1.1.8 as 3

[R8]bgp 3

[R8-bgp]peer 34.1.1.7 as 2

4、宣告业务网段

[R1]bgp 1

[R1-bgp]net 1.1.1.1 32

[R8]bgp 3

[R8-bgp]net 8.8.8.8 32

[R3]bgp 64512

[R3-bgp]net 172.16.3.0 24

[R4]bgp 64512

[R4-bgp]net 172.16.4.0 24

[R5]bgp 64513

[R5-bgp]net 172.16.5.0 24

[R6]bgp 64513

[R6-bgp]net 172.16.6.0 24

[R7]bgp 64513

[R7-bgp]net 172.16.7.0 24

因为水平分割，不能完整学习业务网段，用路由反射解决

[R3]bgp 64512

[R3-bgp]peer 2.2.2.2 re

[R3-bgp]peer 2.2.2.2 reflect-client

[R3-bgp]peer 4.4.4.4 reflect-client

[R3-bgp]reflector cluster-id 3.3.3.3

[R6]bgp 64513

[R6-bgp]peer 5.5.5.5 reflect-client

[R6-bgp]peer 7.7.7.7 reflect-client

[R6-bgp]reflector cluster-id 6.6.6.6

测试全网通：

5、路由聚合，减少路由条路

[R2]bgp 64512

[R2-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set（as-set防环）

[R7]bgp 64513

[R7-bgp]aggregate 172.16.0.0 21 detail-suppressed as-set

聚合前后对比

6、建立隧道，实现r1和r8之间业务的互通

[R1]int t

[R1]int Tunnel 0/0/0

[R1-Tunnel0/0/0]ip add 10.1.1.1 24

[R1-Tunnel0/0/0]tunnel-protocol gre

[R1-Tunnel0/0/0]source 1.1.1.1

[R1-Tunnel0/0/0]destination 8.8.8.8

[R1]ip route-static 192.168.2.0 24 Tunnel 0/0/0

[R8]int Tunnel 0/0/0

[R8-Tunnel0/0/0]ip add 10.1.1.2 24

[R8-Tunnel0/0/0]tunnel-protocol gre

[R8-Tunnel0/0/0]source 8.8.8.8

[R8-Tunnel0/0/0]destination 1.1.1.1

[R8]ip route-static 192.168.1.0 24 Tunnel 0/0/0