路由策略实验

运行OSPF协议

[R1]ospf 1 router-id 1.1.1.1

[R1-ospf-1]area 0

[R1-ospf-1-area-0.0.0.0]network 192.168.12.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 192.168.13.1 0.0.0.0
 

[R2]ospf 1 router-id 2.2.2.2

[R2-ospf-1]area 0

[R2-ospf-1-area-0.0.0.0]network  192.168.12.2 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 192.168.13.3 0.0.0.0

运行RIP协议

[R2]rip 1
[R2-rip-1]v 2
[R2-rip-1]network 192.168.24.0 

[R4]rip 1
[R4-rip-1]v 2
[R4-rip-1]network 192.168.24.0
[R4-rip-1]network 192.168.34.0

[R3]rip 1
[R3-rip-1]v 2
[R3-rip-1]network 192.168.34.0

将R1的环回导入到OSPF网络中，不导入两条骨干

[R1]ip ip-prefix ywq permit 1.1.1.0 24   
[R1]route-policy QQ permit node 10
[R1-route-policy]if-match ip-prefix ywq

[R1-ospf-1]import-route direct route-policy QQ

 进行双点双向重发布

 [R2-ospf-1]import-route rip 1 
 [R2-rip-1]import-route ospf 1

[R3-ospf-1]import-route rip 1
[R3-rip-1]import-route ospf 1

 

 

消除路由回馈

[R2]ip ip-prefix ywq1 permit 1.1.1.0 24

[R2]route-policy qq1 permit node 10

[R2-route-policy]if-match ip-prefix ywq1

[R2-route-policy]apply preference 90

[R2-ospf-1]preference ase route-policy qq1

[R3]ip ip-prefix ywq1 permit 1.1.1.0 24
[R3]route-policy qq1 permit node 10
[R3-route-policy]if-match ip-prefix ywq1
[R3-route-policy]apply preference 90
[R3-ospf-1]preference ase route-policy qq1

解决选路不佳（不恰当的负载均衡），做备份  

查看R4和R1的路由表

[R2]ip ip-prefix ywq10 permit 192.168.34.0 24
[R2]route-policy ywq11 permit node 10
[R2-route-policy]if-match ip-prefix ywq10
[R2-route-policy]apply cost 10
[R2-ospf-1]import-route rip 1 route-policy ywq11 
[R2]route-policy ywq11 permit node 20

[R3]ip ip-prefix ywq10 permit 192.168.24.0 24
[R3]route-policy ywq11 permit node 10
[R3-route-policy]if-match ip-prefix ywq10
[R3-route-policy]apply cost 10
[R3-route-policy]route-policy ywq11 permit node 20
[R3-ospf-1]import-route rip 1 route-policy ywq11