BGP综合实验

二、实验需求

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、整个AS2的IP地址为172.16.0.0/16，请合理划分；并且其内部配置OSPF协议
3、AS间的骨干链路IP地址随意定制；
4、使用BGP协议让整个网络所有设备的环回可以互相访问；
5、减少路由条目数量，避免环路出现；
三、实验步骤
1、配置各设备的接口IP地址
[R1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[R1-LoopBack0]ip add 1.1.1.1 32
[R1-LoopBack1]ip add 192.168.1.1 24

[R2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[R2-GigabitEthernet0/0/1]ip add 172.16.1.1 30
[R2-GigabitEthernet0/0/2]ip add 172.16.1.21 30
[R2-LoopBack0]ip add 2.2.2.2 32

[R3-GigabitEthernet0/0/0]ip add 172.16.1.2 30
[R3-GigabitEthernet0/0/1]ip add 172.16.1.5 30
[R3-LoopBack0]ip add 3.3.3.3 32
[R3-LoopBack1]ip add 192.168.3.3 24

[R4-GigabitEthernet0/0/0]ip add 172.16.1.6 30
[R4-GigabitEthernet0/0/1]ip add 172.16.1.9 30
[R4-LoopBack0]ip add 4.4.4.4 32

[R4-LoopBack1]ip add 192.1686.4.4 24

[R5-GigabitEthernet0/0/0]ip add 172.16.1.22 30
[R5-GigabitEthernet0/0/1]ip add 172.16.1.17 30
[R5-LoopBack0]ip add 5.5.5.5 32
[R5-LoopBack1]ip add 192.168.5.5 24

[R6-GigabitEthernet0/0/0]ip add 172.16.1.18 30
[R6-GigabitEthernet0/0/1]ip add 172.16.1.13 30
[R6-LoopBack0]ip add 6.6.6.6 32
[R6-LoopBack1]ip add 192.168.6.6 24

[R7-GigabitEthernet0/0/0]ip add 172.16.1.14 3
[R7-GigabitEthernet0/0/1]ip add 172.16.1.9 300
[R7-GigabitEthernet0/0/2]ip add 34.1.117 24
[R7-LoopBack0]ip add 7.7.7.7 32
[R7-LoopBack1]ip add 192.168.7.7 24

[R8-GigabitEthernet0/0/0]ip add 34.1.128 24
[R8-LoopBack0]ip add 8.8.8.8 32
[R8-LoopBack1]ip add 192.168.8.8 24

2、配置ospf协议
R2:
ospf 1 router-id 2.2.2.2
area 0
network 2.2.2.2 0.0.0.0
network 172.16.1.0 0.0.0.3
network 172.16.1.20 0.0.0.3

R3:
ospf 1 router-id 3.3.3.3
area 0
network 3.3.3.3 0.0.0.0
network 172.16.1.0 0.0.0.3
network 172.16.1.4 0.0.0.3
network 192.168.3.0 0.0.0.255

R4
ospf 1 router-id 4.4.4.4
area 0
network 4.4.4.4 0.0.0.0
network 172.16.1.4 0.0.0.3
network 172.16.1.8 0.0.0.3
network 192.168.4.0 0.0.0.255

R5:
ospf 1 router-id 5.5.5.5
area 0
network 5.5.5.5 0.0.0.0
network 172.16.1.16 0.0.0.3
network 172.16.1.20 0.0.0.3
network 192.168.5.0 0.0.0.255

R6:
ospf 1 router-id 6.6.6.6
area 0
network 6.6.6.6 0.0.0.0
network 172.16.1.12 0.0.0.3
network 172.16.1.16 0.0.0.3
network 192.168.6.0 0.0.0.255

R7:
ospf 1 router-id 7.7.7.7
area 0
network 7.7.7.7 0.0.0.0
network 172.16.1.8 0.0.0.3
network 172.16.1.12 0.0.0.3
network 192.168.7.0 0.0.0.255


3、配置BGP协议

R1:
[R1]bgp 1
[R1-bgp]peer 15.0.0.2 as-number 2

R2:
bgp 64512
confederation id 2
confederation peer-as 64513
peer 3.3.3.3 as-number 64512
peer 3.3.3.3 connect-interface LoopBack0
peer 5.5.5.5 as-number 64513
peer 5.5.5.5 ebgp-max-hop 100
peer 5.5.5.5 connect-interface LoopBack0
peer 15.0.0.1 as-number 1
ipv4-family unicast
undo synchronization
peer 3.3.3.3 enable
peer 3.3.3.3 next-hop-local
peer 5.5.5.5 enable
peer 5.5.5.5 next-hop-local
peer 12.1.1.1 enable

R3：
bgp 64512
confederation id 2
peer 2.2.2.2 as-number 64512
peer 2.2.2.2 connect-interface LoopBack0
peer 4.4.4.4 as-number 64512
peer 4.4.4.4 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
network 172.16.3.0 255.255.255.0
peer 2.2.2.2 enable
peer 2.2.2.2 next-hop-local
peer 4.4.4.4 enable
peer 4.4.4.4 reflect-client
peer 4.4.4.4 next-hop-local

R6：
bgp 64513
confederation id 2
peer 5.5.5.5 as-number 64513
peer 5.5.5.5 connect-interface LoopBack0
peer 7.7.7.7 as-number 64513
peer 7.7.7.7 connect-interface LoopBack0
ipv4-family unicast
undo synchronization
network 172.16.6.0 255.255.255.0
peer 5.5.5.5 enable
peer 5.5.5.5 next-hop-local
peer 7.7.7.7 enable
peer 7.7.7.7 reflect-client
peer 7.7.7.7 next-hop-local

R7：
bgp 64513
confederation id 2
confederation peer-as 64512
peer 4.4.4.4 as-number 64512
peer 4.4.4.4 ebgp-max-hop 111
peer 4.4.4.4 connect-interface LoopBack0
peer 6.6.6.6 as-number 64513
peer 6.6.6.6 connect-interface LoopBack0
peer 25.0.0.2 as-number 3
ipv4-family unicast
undo synchronization
network 172.16.7.0 255.255.255.0
peer 4.4.4.4 enable
peer 4.4.4.4 next-hop-local
peer 6.6.6.6 enable
peer 6.6.6.6 next-hop-local
peer 25.0.0.2 enable
peer 25.0.0.2 next-hop-local
4、优化路由
R1:

R3:

R6:

5、配置GRE
R1：
interface Tunnel0/0/0
ip address 192.168.8.1 255.255.255.0
tunnel-protocol gre
source 1.1.1.1
destination 8.8.8.8

R8：
interface Tunnel0/0/0
ip address 192.168.8.2 255.255.255.0
tunnel-protocol gre
source 8.8.8.8
destination 1.1.1.1

R1：
[R1-bgp]network 192.168.8.1 24
[R1]ip route-static 192.168.2.0 24 Tunnel 0/0/0
R8：
[R8-bgp]network 192.168.8.2 24
[R8]ip route-static 192.168.1.0 24 Tunnel 0/0/0