题目
拓扑图
配置：
R1
//ip配置
[r1]int l0
[r1-LoopBack0]ip add 1.1.1.1 24
[r1-LoopBack0]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[r1-GigabitEthernet0/0/0]int g0/0/1
[r1-GigabitEthernet0/0/1]ip add 14.1.1.1 24//配置RIP和OSPF并且实现重分布
[r1]rip 1
[r1-rip-1]version 2
[r1-rip-1]network 1.0.0.0
[r1-rip-1]network 12.0.0.0
[r1-rip-1]network 13.0.0.0
R2
//ip配置
[r2]int l0
[r2-LoopBack0]ip add 2.2.2.2 24
[r2-LoopBack0]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
[r2-GigabitEthernet0/0/0]int g0/0/1
[r2-GigabitEthernet0/0/1]ip add 23.1.1.1 24//配置RIP和OSPF并且实现重分布
[r2]rip 1
[r2-rip-1]version 2
[r2-rip-1]network 12.0.0.0
[r2-rip-1]network 2.0.0.0
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]network 23.1.1.0 0.0.0.255
[r2-ospf-1]import-route rip 1
[r2]rip 1
[r2-rip-1]import-route ospf 1
R3
//ip配置
[r3]int l0
[r3-LoopBack0]ip add 3.3.3.3 24
[r3-LoopBack0]int g0/0/0
[r3-GigabitEthernet0/0/0]ip add 23.1.1.2 24
[r3-GigabitEthernet0/0/0]int g0/0/1
[r3-GigabitEthernet0/0/1]ip add 34.1.1.1 24//配置RIP和OSPF并且实现重分布
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]network 34.1.1.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
R4
//ip配置
[r4]int l0
[r4-LoopBack0]ip add 4.4.4.4 24
[r4-LoopBack0]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add 34.1.1.2 24
[r4-GigabitEthernet0/0/0]int g0/0/1
[r4-GigabitEthernet0/0/1]ip add 14.1.1.2 24//配置RIP和OSPF并且实现重分布
[r4]rip 1
[r4-rip-1]version 2
[r4-rip-1]network 14.0.0.0
[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]area 0
[r4-ospf-1-area-0.0.0.0]network 34.1.1.0 0.0.0.255
[r4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0
[Huawei-ospf-1-area-0.0.0.0]q
[Huawei-ospf-1]import-route rip 1
[Huawei]rip 1
[Huawei-rip-1]import-route ospf 1
查看R4的路由表，将掩码都改为24
R2
[r2]int l0
[r2-LoopBack0]ospf network-type broadcast
R4
[r3]int l0
[r3-LoopBack0]ospf network-type broadcast
OSPF向RIP的重分布
在R2出口处，抓取4.4.4.0和34.1.1.0，然后加大其度量，使R1走最佳路径
R2
[r2]ip ip-prefix c permit 4.4.4.0 24
[r2]ip ip-prefix c permit 34.1.1.0 24
[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]rip metricout ip-prefix c 3
在R4出口处，抓取23.1.1.0，然后加大其度量，使R3走最佳路径
R4
[r4]ip ip-prefix c permit 23.1.1.0 24
[r4]int g0/0/1
[r4-GigabitEthernet0/0/1]rip metricout ip-prefix c 3
RIP向OSPF的重分布
在R2处抓取2.2.2.0 和 12.1.1.0 将其类型改为1类，优于2类，能优先选取该路径
R2
[r2]ip ip-prefix chs permit 2.2.2.0 24
[r2]ip ip-prefix chs permit 12.1.1.0 24
[r2]route-policy hs permit node 10
Info: New Sequence of this List.
[r2-route-policy]if-match ip-prefix chs
[r2-route-policy]apply cost-type type-1
[r2-route-policy]q
[r2]route-policy hs permit node 20
Info: New Sequence of this List.
[r2-route-policy]q
[r2]ospf 1
[r2-ospf-1]import-route rip 1 route-policy hs
在R4处抓取14.1.1.0 将其类型改为1类，优于2类，能优先选取该路径
R4
[r4]ip ip-prefix chs permit 14.1.1.0 24
[r4]route-policy hs permit node 10
Info: New Sequence of this List.
[r4-route-policy]if-match ip-prefix chs
[r4-route-policy]apply cost-type type-1
[r4-route-policy]q
[r4]route-policy hs permit node 20
Info: New Sequence of this List.
[r4-route-policy]q
[r4]ospf 1
[r4-ospf-1]import-route rip 1 route-policy hs
注：最重要的是思路清晰，识别最佳路径，然后根据加度量或改类型等等，让其选择最佳路径。
查看R3选路
查看R1选路
