BGP基础实验

实验拓扑及要求：

IP配置：R1：

interface GigabitEthernet0/0/0

ip address 100.1.12.1 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.13.1 255.255.255.0

interface LoopBack0

ip address 1.1.1.1 255.255.255.255

interface LoopBack1

ip address 192.168.1.1 255.255.255.0

R2:

interface GigabitEthernet0/0/0

ip address 100.1.12.2 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.24.2 255.255.255.0

interface LoopBack0

ip address 2.2.2.2 255.255.255.255

interface LoopBack1

ip address 192.168.2.2 255.255.255.0

R3:

interface GigabitEthernet0/0/0

ip address 100.1.13.3 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.34.3 255.255.255.0

interface GigabitEthernet0/0/2

ip address 100.1.36.3 255.255.255.0

interface LoopBack0

ip address 3.3.3.3 255.255.255.255

interface LoopBack1

ip address 192.168.3.3 255.255.255.0

R4:

interface GigabitEthernet0/0/0

ip address 100.1.24.4 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.34.4 255.255.255.0

interface GigabitEthernet0/0/2

ip address 100.1.45.4 255.255.255.0

interface GigabitEthernet1/0/0

ip address 100.1.47.4 255.255.255.0

interface LoopBack0

ip address 4.4.4.4 255.255.255.255

interface LoopBack1

ip address 192.168.4.4 255.255.255.0

R5:

interface GigabitEthernet0/0/0

ip address 100.1.45.5 255.255.255.0

interface GigabitEthernet0/0/1

interface LoopBack0

ip address 5.5.5.5 255.255.255.255

interface LoopBack1

ip address 192.168.5.5 255.255.255.0

R6:

interface GigabitEthernet0/0/0

ip address 100.1.36.6 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.67.6 255.255.255.0

interface GigabitEthernet0/0/2

ip address 100.1.69.6 255.255.255.0

interface LoopBack0

ip address 6.6.6.6 255.255.255.255

interface LoopBack1

ip address 192.168.6.6 255.255.255.0

R7:

interface GigabitEthernet0/0/0

ip address 100.1.47.7 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.67.7 255.255.255.0

interface GigabitEthernet0/0/2

ip address 100.1.78.7 255.255.255.0

interface GigabitEthernet1/0/0

ip address 100.1.107.7 255.255.255.0

interface LoopBack0

ip address 7.7.7.7 255.255.255.255

interface LoopBack1

ip address 192.168.7.7 255.255.255.0

R8:

interface GigabitEthernet0/0/0

ip address 100.1.78.8 255.255.255.0

interface LoopBack0

ip address 8.8.8.8 255.255.255.255

interface LoopBack1

ip address 192.168.8.8 255.255.255.0

R9:

interface GigabitEthernet0/0/0

ip address 100.1.69.9 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.109.9 255.255.255.0

interface LoopBack0

ip address 9.9.9.9 255.255.255.255

interface LoopBack1

ip address 192.168.9.9 255.255.255.0

R10:

interface GigabitEthernet0/0/0

ip address 100.1.107.10 255.255.255.0

interface GigabitEthernet0/0/1

ip address 100.1.109.10 255.255.255.0

interface LoopBack0

ip address 10.10.10.10 255.255.255.255

interface LoopBack1

ip address 192.168.10.10 255.255.255.0

配置ospf使AS内部通：

[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 192.168.2.0 0.0.0.255

[R2-ospf-1-area-0.0.0.0]net 100.1.24.0 0.0.0.255

[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 192.168.3.0 0.0.0.255

[R3-ospf-1-area-0.0.0.0]net 100.1.34.0 0.0.0.255

[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 192.168.4.0 0.0.0.255

[R4-ospf-1-area-0.0.0.0]net 100.1.24.0 0.0.0.255

[R4-ospf-1-area-0.0.0.0]net 100.1.34.0 0.0.0.255

[R9-ospf-1-area-0.0.0.0]net 9.9.9.9 0.0.0.0

[R9-ospf-1-area-0.0.0.0]net 192.168.9.0 0.0.0.255

[R9-ospf-1-area-0.0.0.0]net 100.1.109.0 0.0.0.255

[R10-ospf-1-area-0.0.0.0]net 10.10.10.10 0.0.0.0

[R10-ospf-1-area-0.0.0.0]net 192.168.10.0 0.0.0.255

[R10-ospf-1-area-0.0.0.0]net 100.1.109.0 0.0.0.255

Bgp配置：

[R1]bgp 100

[R1-bgp]router-id 1.1.1.1

[R1-bgp]peer 100.1.12.2 as 200

[R1-bgp]peer 100.1.13.3 as 200

[R1-bgp]net 192.168.1.0 255.255.255.0

[R2]bgp 200

[R2-bgp]peer 100.1.12.1 as 100

[R2-bgp]peer 3.3.3.3 as 200

[R2-bgp]peer 3.3.3.3 connect-interface l0

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

[R2-bgp]peer 4.4.4.4 as 200

[R2-bgp]peer 4.4.4.4 connect-interface l0

[R2-bgp]peer 4.4.4.4 next-hop-local

[R2-bgp]net 192.168.2.0 255.255.255.0

[R3]bgp 200

[R3-bgp]router-id 3.3.3.3

[R3-bgp]peer 100.1.13.1 as 100

[R3-bgp]peer 100.1.36.6 as 300

[R3-bgp]peer 2.2.2.2 as 200

[R3-bgp]peer 2.2.2.2 connect-interface l0

[R3-bgp]peer 2.2.2.2 next-hop-local

[R3-bgp]peer 4.4.4.4 as 200

[R3-bgp]peer 4.4.4.4 connect-interface l0

[R3-bgp]peer 4.4.4.4 next-hop-local

[R3-bgp]net 192.168.3.0 255.255.255.0

[R4]bgp 200

[R4-bgp]router-id 4.4.4.4

[R4-bgp]peer 100.1.45.5 as 300

[R4-bgp]peer 100.1.47.7 as 400

[R4-bgp]peer 2.2.2.2 as 200

[R4-bgp]peer 2.2.2.2 connect-interface l0

[R4-bgp]peer 2.2.2.2 next-hop-local

[R4-bgp]peer 3.3.3.3 as 200

[R4-bgp]peer 3.3.3.3 connect-interface l0

[R4-bgp]peer 3.3.3.3 next-hop-local

[R4-bgp]net 192.168.4.0 255.255.255.0

[R5]bgp 300

[R5-bgp]router-id 5.5.5.5

[R5-bgp]peer 100.1.45.4 as 200

[R5-bgp]net 192.168.5.0 255.255.255.0

[R6]bgp 300

[R6-bgp]router-id 6.6.6.6

[R6-bgp]peer 100.1.36.3 as 200

[R6-bgp]peer 100.1.67.7 as 400

[R6-bgp]peer 100.1.69.9 as 500

[R6-bgp]net 192.168.6.0 255.255.255.0

[R7]bgp 400

[R7-bgp]route-select

[R7-bgp]router-id 7.7.7.7

[R7-bgp]peer 100.1.47.4 as 200

[R7-bgp]peer 100.1.67.6 as 300

[R7-bgp]peer 100.1.78.8 as 500

[R7-bgp]peer 100.1.107.10 as 500

[R7-bgp]net 192.168.7.0 255.255.255.0

[R8]bgp 500

[R8-bgp]router-id 8.8.8.8

[R8-bgp]peer 100.1.78.7 as 400

[R8-bgp]net 192.168.8.0 255.255.255.0

[R9]bgp 500

[R9-bgp]router-id 9.9.9.9

[R9-bgp]peer 100.1.69.6 as 300

[R9-bgp]peer 10.10.10.10 as 500

[R9-bgp]peer 10.10.10.10 connect-interface l0

[R9-bgp]peer 10.10.10.10 next-hop-local

[R9-bgp]net 192.168.9.0 255.255.255.0

[R10]bgp 500

[R10-bgp]router-id 10.10.10.10

[R10-bgp]peer 100.1.107.7 as 400

[R10-bgp]peer 9.9.9.9 as 500

[R10-bgp]peer 9.9.9.9 connect-interface l0

[R10-bgp]peer 9.9.9.9 next-hop-local

[R10-bgp]net 192.168.10.0 255.255.255.0

查看邻居表：

解决环路问题：

[R5-bgp]peer 100.1.45.4 allow-as-loop

[R6-bgp]peer 100.1.36.3 allow-as-loop

[R8-bgp]peer 100.1.78.7 allow-as-loop

[R9-bgp]peer 100.1.69.6 allow-as-loop

[R10-bgp]peer 100.1.107.7 allow-as-loop

全网通测试：