BGP小综合实验

[R2]ospf 1 router-id 2.2.2.2

[R2-ospf-1]area 0

[R2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R3]ospf 1 router-id 3.3.3.3

[R3-ospf-1]area 0

[R3-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R4]ospf 1 router-id 4.4.4.4

[R4-ospf-1]area 0

[R4-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R5]ospf 1 router-id 5.5.5.5

[R5-ospf-1]area 0

[R5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R6]ospf 1 router-id 6.6.6.6

[R6-ospf-1]area 0

[R6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

[R7]ospf 1 router-id 7.7.7.7

[R7-ospf-1]area 0

[R7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

3、配置bgp

[R1]bgp 1

[R1-bgp]router-id 1.1.1.1

[R1-bgp]peer 12.1.1.2 as-number 2

[R2]bgp 64512

[R2-bgp]router-id 2.2.2.2

[R2-bgp]confederation id 2

[R2-bgp]confederation peer-as 64513

[R2-bgp]peer 12.1.1.1 as-number 1

[R2-bgp]peer 172.16.0.5 as-number 64513

[R2-bgp]peer 172.16.0.5 connect-interface LoopBack0

[R2-bgp]peer 172.16.0.5 ebgp-max-hop 2

[R2-bgp]peer 172.16.0.3 as-number 64512

[R2-bgp]peer 172.16.0.3 connect-interface LoopBack0

[R3]bgp 64512

[R3-bgp]router-id 3.3.3.3

[R3-bgp]confederation id 2

[R3-bgp]peer 172.16.0.2 as-number 64512

[R3-bgp]peer 172.16.0.2 connect-interface LoopBack0

[R3-bgp]peer 172.16.0.4 as-number 64512

[R3-bgp]peer 172.16.0.4 connect-interface LoopBack0

[R4]bgp 64512

[R4-bgp]router-id 4.4.4.4

[R4-bgp]confederation id 2

[R4-bgp]confederation peer-as 64513

[R4-bgp]peer 172.16.0.7 as-number 64513

[R4-bgp]peer 172.16.0.7 connect-interface LoopBack0

[R4-bgp]peer 172.16.0.7 ebgp-max-hop 2

[R4-bgp]peer 172.16.0.3 as-number 64512

[R4-bgp]peer 172.16.0.3 connect-interface LoopBack0

[R5]bgp 64513

[R5-bgp]router-id 5.5.5.5

[R5-bgp]confederation id 2

[R5-bgp]confederation peer-as 64512

[R5-bgp]peer 172.16.0.2 as-number 64512

[R5-bgp]peer 172.16.0.2 connect-interface LoopBack0

[R5-bgp]peer 172.16.0.2 ebgp-max-hop 2

[R5-bgp]peer 172.16.0.6 as-number 64513

[R5-bgp]peer 172.16.0.6 connect-interface LoopBack0

[R6]bgp 64513

[R6-bgp]router-id 6.6.6.6

[R6-bgp]confederation id 2

[R6-bgp]peer 172.16.0.5 as-number 64513

[R6-bgp]peer 172.16.0.5 connect-interface LoopBack0

[R6-bgp]peer 172.16.0.7 as-number 64513

[R6-bgp]peer 172.16.0.7 connect-interface LoopBack0

[R7]bgp 64513

[R7-bgp]router-id 7.7.7.7

[R7-bgp]confederation id 2

[R7-bgp]confederation peer-as 64512

[R7-bgp]peer 172.16.0.4 as-number 64512

[R7-bgp]peer 172.16.0.4 connect-interface LoopBack0

[R7-bgp]peer 172.16.0.4 ebgp-max-hop 2

[R7-bgp]peer 172.16.0.6 as-number 64513

[R7-bgp]peer 172.16.0.6 connect-interface LoopBack0

[R7-bgp]peer 78.1.1.2 as-number 3

[R8]bgp 3

[R8-bgp]router-id 8.8.8.8

[R8-bgp]peer 78.1.1.1 as-number 2

修改R2和R7路由传递给邻居的下一跳为本地

[R2-bgp]peer 172.16.0.3 next-hop-local

[R7-bgp]peer 172.16.0.6 next-hop-local

创建路由反射器

[R3-bgp]peer 172.16.0.2 reflect-client

[R6-bgp]peer 172.16.0.7 reflect-client

4、BGP的宣告配置

R1：[R1-bgp]network 1.1.1.0 255.255.255.0

R2 利用空接口进行汇总宣告

[R2]ip route-static 172.16.0.0 255.255.0.0 NULL0

[R1-bgp]network 172.16.0.0 0.0.255.255

R7 利用空接口进行汇总宣告

[R2]ip route-static 172.16.0.0 255.255.0.0 NULL0

[R1-bgp]network 172.16.0.0 0.0.255.255

R8：[R1-bgp]network 8.8.8.0 255.255.255.0