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【HCIP】重发布及路由策略的实验
实验要求
- 使用双点双向重发布
- 所有路由器进行最佳选路
- 存在备份路径，不得出现环路和路由回馈
- R1除本身环回外，外加几条环回
172.16.1.0/24 deny
172.16.2.0/24 type 1
172.16.3.0/24 cost 6
172.16.4.0/24 type 1 cost 9
更改如上参数
实验过程
配置IP
//R1 - 例 # interface GigabitEthernet0/0/0 ip address 12.1.1.1 255.255.255.0 # interface GigabitEthernet0/0/1 ip address 14.1.1.1 255.255.255.0 # interface LoopBack0 ip address 1.1.1.1 255.255.255.0 # interface LoopBack1 ip address 172.16.1.1 255.255.255.0 # interface LoopBack2 ip address 172.16.2.1 255.255.255.0 # interface LoopBack3 ip address 172.16.3.1 255.255.255.0 # interface LoopBack4 ip address 172.16.4.1 255.255.255.0- 1
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起协议
//RIP //R1 rip 1 undo summary version 2 network 1.0.0.0 network 172.16.0.0 network 12.0.0.0 network 14.0.0.0 //R2 rip 1 undo summary version 2 network 2.0.0.0 network 12.0.0.0 //R4 rip 1 undo summary version 2 network 14.0.0.0- 1
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//OSPF //R2 ospf 1 router-id 2.2.2.2 area 0.0.0.0 network 23.1.1.2 0.0.0.0 //R3 ospf 1 router-id 3.3.3.3 area 0.0.0.0 network 3.3.3.3 0.0.0.0 network 23.1.1.3 0.0.0.0 network 34.1.1.3 0.0.0.0 //R4 ospf 1 router-id 4.4.4.4 area 0.0.0.0 network 4.4.4.4 0.0.0.0 network 34.1.1.4 0.0.0.0- 1
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路由表展示
双向重发布
//R2 ospf 1 router-id 2.2.2.2 import-route rip 1 area 0.0.0.0 network 23.1.1.2 0.0.0.0 # rip 1 undo summary version 2 network 2.0.0.0 network 12.0.0.0 import-route ospf 1 //R4 ospf 1 router-id 4.4.4.4 import-route rip 1 area 0.0.0.0 network 4.4.4.4 0.0.0.0 network 34.1.1.4 0.0.0.0 # rip 1 undo summary version 2 network 14.0.0.0 import-route ospf 1- 1
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路由表展示
可以发现R4的路由表与重发布前一致，故没有出现路由回馈
但是R2的路由表与重发布前不一致一致，R4环回4.4.4.4在OSPF与RIP发送方式不一样导致产生路由回馈，在R2路由表中产生两条路由//解决方案：修改R4环回的OSPF工作方式 [R4]interface LoopBack 0 [R4-LoopBack0]ospf network-type broadcast- 1
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此时再查看R2路由表，无
4.4.4.4/32
也可以将地址改为
4.4.4.4/32，此时将没有4.4.4.4/24地址连通性测试：R1环回 ping R3环回
干涉选路
R1对OSPF和R3对RIP中的任一网段都为等开销负载均衡
但实际上上下两条路存在不同，我们分别在R2与R4上干涉选路 — 使用偏移列表//R2 [R2]ip ip-prefix a permit 4.4.4.0 24 [R2]ip ip-prefix a permit 34.1.1.0 24 [R2]interface g0/0/0 [R2-GigabitEthernet0/0/0]rip metricout ip-prefix a 2 //R4 [R4]ip ip-prefix a permit 23.1.1.0 24 [R4]int g0/0/1 [R4-GigabitEthernet0/0/1]rip metricout ip-prefix a 2- 1
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此时R1到R3的选路已经完成，接下来在OSPF中干涉选路，使用华为路由策略//将不佳路由的类型2改为类型1 //R2 [R2]ip ip-prefix b permit 2.2.2.0 24 [R2]ip ip-prefix b permit 12.1.1.0 24 [R2]route-policy b permit node 10 Info: New Sequence of this List. [R2-route-policy]if-match ip-prefix b [R2-route-policy]apply cost-type type-1 [R2-route-policy]q [R2]route-policy b permit node 20 //空表，允许所有 Info: New Sequence of this List. [R2-route-policy]q [R2]ospf 1 [R2-ospf-1]import-route rip route-policy b //重发布 //R4 [R4]ip ip-prefix b permit 14.1.1.0 24 [R4]route-policy b permit node 10 Info: New Sequence of this List. [R4-route-policy]if-match ip-prefix b [R4-route-policy]apply cost-type type-1 [R4-route-policy]q [R4]route-policy b permit node 20 Info: New Sequence of this List. [R4-route-policy]q [R4]ospf 1 [R4-ospf-1]import-route rip route-policy b- 1
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此时仅R1环回等开销负载均衡更改R1环回参数 – 华为路由策略
//R2 ip ip-prefix R1-1 index 10 permit 172.16.1.0 24 ip ip-prefix R1-2 index 10 permit 172.16.2.0 24 ip ip-prefix R1-3 index 10 permit 172.16.3.0 24 ip ip-prefix R1-4 index 10 permit 172.16.4.0 24 # route-policy b permit node 10 if-match ip-prefix b apply cost-type type-1 # route-policy b deny node 20 if-match ip-prefix R1-1 # route-policy b permit node 30 if-match ip-prefix R1-2 apply cost-type type-1 # route-policy b permit node 40 if-match ip-prefix R1-3 apply cost 6 # route-policy b permit node 50 if-match ip-prefix R1-4 apply cost 6 apply cost-type type-1 # route-policy b permit node 60 # ospf 1 router-id 2.2.2.2 import-route rip 1 route-policy b //R4 - 同上- 1
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路由表展示
连通性测测试：
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- 原文地址：https://blog.csdn.net/SuichI314/article/details/126036388
