策略路由的配置

 

 

实验拓扑:

本次实验通过MQC配置实现来自PC1的流量走R2，PC2的流量走R3

1、先配置IP地址和OSPF

      各个接口的网段如图上所示：

 R1:

[R1]ospf 10 router-id 1.1.1.1
[R1-ospf-10]ar
[R1-ospf-10]area 0
[R1-ospf-10-area-0.0.0.0]

[R1]int g0/0/0     
[R1-GigabitEthernet0/0/0]ip address 10.0.45.254 24
[R1-GigabitEthernet0/0/0]ospf enable 10 area  0

[R1]int g0/0/1
[R1-GigabitEthernet0/0/1]ip address  10.0.12.1 24
[R1-GigabitEthernet0/0/1]ospf enable 10 area  0

[R1]int g0/0/2
[R1-GigabitEthernet0/0/2]ip address  10.0.13.1 24
[R1-GigabitEthernet0/0/2]ospf enable 10 area  0

R2:

[R2]ospf 10 router-id 2.2.2.2
[R2-ospf-10]ar
[R2-ospf-10]area 0
[R2-ospf-10-area-0.0.0.0]

[R2]int g0/0/1     
[R2-GigabitEthernet0/0/1]ip address 10.0.12.2 24
[R2-GigabitEthernet0/0/1]ospf enable 10 area  0

[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip address  10.0.24.1 24
[R2-GigabitEthernet0/0/0]ospf enable 10 area  0

R3

[R3]ospf 10 router-id 3.3.3.3
[R3-ospf-10]ar
[R3-ospf-10]area 0
[R3-ospf-10-area-0.0.0.0]

[R3]int g0/0/2    
[R3-GigabitEthernet0/0/2]ip address 10.0.13.3 24
[R3-GigabitEthernet0/0/2]ospf enable 10 area  0

[R3]int g0/0/1
[R3-GigabitEthernet0/0/1]ip address  10.0.34.3 24
[R3-GigabitEthernet0/0/1]ospf enable 10 area  0

R4 ：

[R4]ospf 10 router-id 4.4.4.4
[R4-ospf-10]ar
[R4-ospf-10]area 0
[R4-ospf-10-area-0.0.0.0]

[R4]int loopback 0   
[Huawei-LoopBack0]ip address 4.4.4.4 24
[Huawei-LoopBack0]ospf enable 10 area  0

[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip address  10.0.24.4 24
[R4-GigabitEthernet0/0/0]ospf enable 10 area  0

[R4]int g0/0/1
[R4-GigabitEthernet0/0/1]ip address  10.0.34.4 24
[R4-GigabitEthernet0/0/1]ospf enable 10 area  0

2、查看OSPF邻居关系

 3、查看路由表

        在没有任何改动的情况下，去往4.4.4.4网段在R1上实现负载均衡

 先改一下R1的G0/0/2口的开销值

[R1]int g0/0/2
[R1-GigabitEthernet0/0/2]ospf cost 100

 再查看路由表：4.4.4.4的下一跳只有10.0.12.2

 4、配置MQC

        1、先配置ACl ：把匹配的流量抓出来

[R1]acl 2000
[R1-acl-basic-2000]rule 5 permit source 10.0.45.1 0.0.0.0

[R1]acl 2001
[R1-acl-basic-2001]rule 5 permit source  10.0.45.2 0.0.0.0

        2、创建两个流分类

[R1]traffic classifier 1
[R1-classifier-1]if-match acl 2000

[R1]traffic classifier 2
[R1-classifier-2]if-match acl 2001

        3、创建流行为，重定向下一跳地址

[R1]traffic behavior 1
[R1-behavior-1]redirect ip-nexthop 10.0.12.1

[R1]traffic behavior 2
[R1-behavior-2]redirect ip-nexthop 10.0.13.3

        4、创建流策略，将流分类和流策略做互联

[R1]traffic policy 1
[R1-trafficpolicy-1]classifier 1 behavior 1
[R1-trafficpolicy-1]classifier 2 behavior 2

        5、在接口入方向调用流策略

[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]traffic-policy 1 inbound

5、查看配置

 

 6、在PC上tracert  4.4.4.4

        10.0.45.1（PC1）走的是10.0.12.2

       10.0.45.2（PC2）走的是10.0.13.3

 

 总结：

在更改了OSPF的开销值之后，没有了负载均衡，所有的去往4.4.4.4的流量都经过R2，通过配置策略路由，重定向下一跳地址，即使经过R3的开销值很大，依然要按照策略来实现分流。