BGP 实验

 实验拓扑图

配IP地址和环回地址 

r1： 

[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 11.1.1.1 24
[R1-GigabitEthernet0/0/0]int loo 0
[R1-LoopBack0]ip add 192.168.1.1 24
[R1-LoopBack0]int loo 1
[R1-LoopBack1]ip add 192.168.2.1 24

r2： 

[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 11.1.1.2 24
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add 22.1.1.1 24
[R2-GigabitEthernet0/0/1]int loo 0
[R2-LoopBack0]ip add 2.2.2.2 24

 r3：

[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 22.1.1.2 24
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 33.1.1.1 24
[R3-GigabitEthernet0/0/1]int loo 0
[R3-LoopBack0]ip add 3.3.3.3 24

r4：

[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 33.1.1.2 24
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 44.1.1.1 24
[R4-GigabitEthernet0/0/1]int loo 0
[R4-LoopBack0]ip add 4.4.4.4 24

r5：

[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 44.1.1.2 24
[R5-GigabitEthernet0/0/0]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add 55.1.1.1 24
[R5-GigabitEthernet0/0/1]int loo 0
[R5-LoopBack0]ip add 5.5.5.5 24

r6：

[R6]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add 55.1.1.2 24
[R6-GigabitEthernet0/0/0]int g0/0/1
[R6-GigabitEthernet0/0/1]ip add  66.1.1.1 24
[R6-GigabitEthernet0/0/1]int loo 0
[R6-LoopBack0]ip add 6.6.6.6 24

 r7：

[R7]int g0/0/0
[R7-GigabitEthernet0/0/0]ip add 66.1.1.2 24
[R7]int l 0
[R7-LoopBack0]ip add 172.16.1.1 24
[R7-LoopBack0]int l1
[R7-LoopBack1]ip add 172.16.2.1 24

 书写路由

r1：

[R1]rip 1
[R1-rip-1]version 2
[R1-rip-1]network 11.0.0.0
[R1-rip-1]network 192.168.1.0
[R1-rip-1]network 192.168.2.0

 r2：

[R2]rip 1	
[R2-rip-1]version 2
[R2-rip-1] network 11.0.0.0
[R2-rip-1] network 2.0.0.0

 r3：

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 33.1.1.1 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

 r4：

[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 0.0.0.0 255.255.255.255

r5：

[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 5.5.5.5 0.0.0.0
[R5-ospf-1-area-0.0.0.0]network 44.1.1.2 0.0.0.0

r6：

[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-2-area-0.0.0.0]network 66.1.1.1 0.0.0.0
[R6-ospf-2-area-0.0.0.0]network 6.6.6.6 0.0.0.0

r7：

[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]area 0
[R7-ospf-1-area-0.0.0.0]network 0.0.0.0 255.255.255.255

建立邻居关系

r1：

[R1]bgp 100
[R1-bgp]router-id 1.1.1.1
[R1-bgp]peer 2.2.2.2 as-number 100	
[R1-bgp]peer 2.2.2.2 connect-interface LoopBack 0

r2：

[R2]bgp 100
[R2-bgp]peer 1.1.1.1 as-number 100
[R2-bgp]peer 1.1.1.1 connect-interface LoopBack 0	
[R2-bgp]peer 22.1.1.2 as-number 101

r3：

[R3]bgp 101
[R3-bgp]router-id 3.3.3.3
[R3-bgp]peer 22.1.1.1 as-number 100
[R3-bgp]peer 5.5.5.5 as-number 101
[R3-bgp]peer 5.5.5.5 connect-interface LoopBack 0

r5：

[R5]bgp 101
[R5-bgp]router-id 5.5.5.5
[R5-bgp]peer 3.3.3.3 as-number 101
[R5-bgp]peer 3.3.3.3 connect-interface LoopBack 0
[R5-bgp]peer 55.1.1.2 as-number 102

r6：

[R6]bgp 102
[R6-bgp]router-id 6.6.6.6
[R6-bgp]peer 55.1.1.1 as-number 101
[R6-bgp]peer 7.7.7.7 as-number 102
[R6-bgp]peer 7.7.7.7 connect-interface LoopBack 0       

r7：

[R7]bgp 102
[R7-bgp]router-id 7.7.7.7
[R7-bgp]peer 6.6.6.6 as-number 102
[R7-bgp]peer 6.6.6.6 connect-interface LoopBack 0

重发布通路由

[R2]bgp 100
[R2-bgp]import-route rip 1

[R3]bgp 101	
[R3-bgp]import-route ospf 1

[R5]bgp 101
[R5-bgp]import-route ospf 1

[R6]bgp 102
[R6-bgp]import-route ospf 2

最优bgp 通道

[R3]bgp 101	
[R3-bgp]peer 5.5.5.5 next-hop-local 

[R5]bgp 101
[R5-bgp]peer 3.3.3.3 next-hop-local 

[R6]bgp 102
[R6-bgp]peer 7.7.7.7 next-hop-local

[R2]bgp 100
[R2-bgp]peer 1.1.1.1 next-hop-local 

手工进行宣告R1的环回

[R2]bgp 100
[R2-bgp]network 192.168.1.0 24
[R2-bgp]network 192.168.2.0 24
[R2-bgp]aggregate 192.168.0.0 22 //进行聚合
//创建过滤R1中2.0网段的路由策略
[R2]ip ip-prefix xx permit 192.168.1.0 24	
[R2]route-policy yy permit node 10
[R2-route-policy]if-match ip-prefix xx
[R2]bgp 100
[R2-bgp]aggregate 192.168.0.0 22 detail-suppressed suppress-policy yy

 r7手工环回宣告

[R6]ip ip-prefix xx permit 172.16.1.1 32
[R6]route-policy yy deny node 10
[R6-route-policy]if-match ip-prefix xx
[R6-route-policy]qui	
[R6]route-policy yy permit node 20
[R6-route-policy]qui
[R6]bgp 102
[R6-bgp]peer 55.1.1.1 route-policy yy export 

至此实验完成！