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BGP综合大实验

backend 2025/8/11 15:55:52

一.实验要求及拓扑

二.实验步骤

1.配IP

R1：
[R1]interface g 0/0/0
[R1-GigabitEthernet0/0/0]ip address 12.1.1.1 24
[R1]interface LoopBack 0
[R1-LoopBack0]ip address 1.1.1.1 24
[R1]interface LoopBack 1
[R1-LoopBack1]ip address 192.168.1.1 24

R2：
[R2]interface g 0/0/0
[R2-GigabitEthernet0/0/0]ip address 12.1.1.2 24
[R2]interface LoopBack 0
[R2-LoopBack0]ip address 2.2.2.2 24
[R2]interface g 0/0/1
[R2-GigabitEthernet0/0/1]ip address 172.16.1.1 30
[R2]interface g 0/0/2
[R2-GigabitEthernet0/0/2]ip address 172.16.1.21 30

R3：
[R3]interface LoopBack 0
[R3-LoopBack0]ip address 3.3.3.3 24
[R3]interface g 0/0/0
[R3-GigabitEthernet0/0/0]ip address 172.16.1.2 30
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]ip address 172.16.1.5 30

R4：
[R4]interface LoopBack 0
[R4-LoopBack0]ip address 4.4.4.4 24
[R4]interface GigabitEthernet 0/0/0
[R4-GigabitEthernet0/0/0]ip address 172.16.1.6 30
[R4]interface GigabitEthernet 0/0/1
[R4-GigabitEthernet0/0/1]ip address 172.16.1.9 30

R5：
[R5]interface LoopBack 0
[R5-LoopBack0]ip address 5.5.5.5 24
[R5]interface GigabitEthernet 0/0/1
[R5-GigabitEthernet0/0/1]ip address 172.16.1.22 30
[R5]interface GigabitEthernet 0/0/0
[R5-GigabitEthernet0/0/0]ip address 172.16.1.13 30

R6：
[R6]interface LoopBack 0
[R6-LoopBack0]ip address 6.6.6.6 24
[R6]interface GigabitEthernet 0/0/1
[R6-GigabitEthernet0/0/1]ip address 172.16.1.14 30
[R6]interface GigabitEthernet 0/0/0
[R6-GigabitEthernet0/0/0]ip address 172.16.1.17 30

R7：
[R7-LoopBack0]ip address 7.7.7.7 24
[R7]interface GigabitEthernet 0/0/1
[R7-GigabitEthernet0/0/1]ip address 172.16.1.18 30
[R7]interface GigabitEthernet 0/0/2
[R7-GigabitEthernet0/0/2]ip address 25.0.0.1 24
[R7]interface GigabitEthernet 0/0/0
[R7-GigabitEthernet0/0/0]ip address 172.16.1.10 30

R8：
[R8]interface lo 0
[R8-LoopBack0]ip address 8.8.8.8 24
[R8]interface lo 1
[R8-LoopBack1]ip address 192.168.2.1 24
[R8]interface GigabitEthernet 0/0/0
[R8-GigabitEthernet0/0/0]ip address 25.0.0.2 24

2、配置OSPF

R2：
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.3
[R2-ospf-1-area-0.0.0.0]network 172.16.1.20 0.0.0.3

R3：
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.3
[R3-ospf-1-area-0.0.0.0]network 172.16.1.4 0.0.0.3

R4：
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 4.4.4.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]network 172.16.1.4 0.0.0.3

[R4-ospf-1-area-0.0.0.0]network 172.16.1.8 0.0.0.3

R5：
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 5.5.5.0 0.0.0.255
[R5-ospf-1-area-0.0.0.0]network 172.16.1.20 0.0.0.3
[R5-ospf-1-area-0.0.0.0]network 172.16.1.12 0.0.0.3

R6：
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 6.6.6.0 0.0.0.255
[R6-ospf-1-area-0.0.0.0]network 172.16.1.12 0.0.0.3
[R6-ospf-1-area-0.0.0.0]network 172.16.1.16 0.0.0.3

R7：
[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]area 0
[R7-ospf-1-area-0.0.0.0]network 7.7.7.0 0.0.0.255
[R7-ospf-1-area-0.0.0.0]network 172.16.1.161 0.0.0.3
[R7-ospf-1-area-0.0.0.0]network 172.16.1.16 0.0.0.3
[R7-ospf-1-area-0.0.0.0]network 25.0.0.0 0.0.0.255

3、配置BGP：

R1：
[R1]bgp 1
[R1-bgp]peer 12.1.1.2 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 15.0.0.1 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