重发布，路由策略实验

根据上图搭建拓扑：
1.R1-R7的环回依次为1.1.1.1/24-7.7.7.7/24，路由之间网段依次为12.1.1.0/24-67.1.1.0/24
2.R1,R2,R3rip里面，R2,R3,R4,R5,R6,R7在ospf里面；
3.R7环回要重发布到RIP里面，所以R7直连重发布，R2和R3双向重发布；
4.解决环路问题。

1.配置地址

[r1]int l 0
[r1-LoopBack0]ip ad 1.1.1.1 24
[r1-LoopBack0]int g 0/0/1
[r1-GigabitEthernet0/0/1]ip ad 13.1.1.1 24
[r1-GigabitEthernet0/0/1]int g 0/0/0
[r1-GigabitEthernet0/0/0]ip ad 12.1.1.1 24
[r2]int l 0
[r2-LoopBack0]ip ad 2.2.2.2 24
[r2-LoopBack0]int g 0/0/1
[r2-GigabitEthernet0/0/1]ip ad 12.1.1.2 24
[r2-GigabitEthernet0/0/1]int g 0/0/0
[r2-GigabitEthernet0/0/0]ip ad 24.1.1.1 24
[r3]int l 0
[r3-LoopBack0]ip ad 3.3.3.3 24
[r3-LoopBack0]int g 0/0/1
[r3-GigabitEthernet0/0/1]ip ad 13.1.1.2 24
[r3-GigabitEthernet0/0/1]int g 0/0/0
[r3-GigabitEthernet0/0/0]ip ad 34.1.1.1 24
[r4]int l 0
[r4-LoopBack0]ip ad 4.4.4.4 24
[r4-LoopBack0]int g 0/0/1
[r4-GigabitEthernet0/0/1]ip ad 24.1.1.2 24
[r4-GigabitEthernet0/0/1]int g 0/0/2
[r4-GigabitEthernet0/0/2]ip ad 34.1.1.2 24
[r4-GigabitEthernet0/0/2]int g 0/0/0
[r4-GigabitEthernet0/0/0]ip ad 45.1.1.1 24
[r5]int l 0
[r5-LoopBack0]ip ad 5.5.5.5 24
[r5-LoopBack0]int g 0/0/1
[r5-GigabitEthernet0/0/1]ip ad 45.1.1.2 24
[r5-GigabitEthernet0/0/1]int g 0/0/0
[r5-GigabitEthernet0/0/0]ip ad 56.1.1.1 24
[r6]int l 0
[r6-LoopBack0]ip ad 6.6.6.6 24
[r6-LoopBack0]int g0/0/1
[r6-GigabitEthernet0/0/1]ip ad 56.1.1.2 24
[r6-GigabitEthernet0/0/1]int g 0/0/0
[r6-GigabitEthernet0/0/0]ip ad 67.1.1.1 24
[r7]int l 0
[r7-LoopBack0]ip ad 7.7.7.7 24
[r7-LoopBack0]int g 0/0/1
[r7-GigabitEthernet0/0/1]ip ad 67.1.1.2 24

2.RIP 和OSPF 的划分

[r1]rip 1
[r1-rip-1]version 2
[r1-rip-1]un summary 
[r1-rip-1]net 1.0.0.0
[r1-rip-1]net 12.0.0.0
[r1-rip-1]net 13.0.0.0
[r2]rip 1
[r2-rip-1]version 2	
[r2-rip-1]un summary 
[r2-rip-1]network 12.0.0.0	
[r2-rip-1]network 2.0.0.0
[r3]rip 1
[r3-rip-1]version 2	
[r3-rip-1]un summary 
[r3-rip-1]network 13.0.0.0
[r2]ospf 1 router-id 2.2.2.2	
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 24.1.1.1 0.0.0.0
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[r3-ospf-1-area-0.0.0.0]network 34.1.1.1 0.0.0.0
[r4]ospf 1 router-id 4.4.4.4	
[r4-ospf-1]area 0	
[r4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0	
[r4-ospf-1-area-0.0.0.0]network 34.1.1.2 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 24.1.1.2 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 45.1.1.1 0.0.0.0
[r5]ospf 1 router-id 5.5.5.5	
[r5-ospf-1]area 0
[r5-ospf-1-area-0.0.0.0]network 45.1.1.2 0.0.0.0
[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 56.1.1.1 0.0.0.0
[r6]ospf 1 router-id 6.6.6.6	
[r6-ospf-1]area 0	
[r6-ospf-1-area-0.0.0.0]network 6.6.6.6 0.0.0.0
[r6-ospf-1-area-0.0.0.0]network 56.1.1.2 0.0.0.0
[r6-ospf-1-area-0.0.0.0]network 67.1.1.1 0.0.0.0
[r7]ospf 1 router-id 7.7.7.7	
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]network 67.1.1.2 0.0.0.0

3.R7直连重发布，R2和R3双向重发布

[r7]ospf 1	
[r7-ospf-1]import-route direct 
[r2]rip 	
[r2-rip-1]import-route ospf 1
[r2-rip-1]q
[r2]ospf 1	
[r2-ospf-1]import-route rip
[r3]rip	
[r3-rip-1]import-route ospf 1
[r3-rip-1]q
[r3]ospf 1	
[r3-ospf-1]import-route rip

4.解决环路问题
在R3上抓取7.7.7.7路由

[r3]ip ip-prefix a permit 7.7.7.0 24
[r3]route-policy b deny node 10
Info: New Sequence of this List.
[r3-route-policy]if-match ip-prefix a
[r3]route-policy b permit node 20
Info: New Sequence of this List.
[r3-ospf-1]import-route ospf 10 route-policy b

5.优化

[r2]acl 2000
[r2-acl-basic-2000]rule 5 permit source 34.1.1.0 0
[r2]route-policy c permit node 10
Info: New Sequence of this List.
[r2-route-policy]if-match acl 2000	
[r2-route-policy]apply cost 3
[r2]route-policy c permit node 20
Info: New Sequence of this List.
[r2]ospf 1
[r2-ospf-1]import-route rip 1 route-policy c