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实验5 OSPF综合实验
2022-07-26 19:43:00 【关伯兰,】
1.划分网段
2.做通公网

3. MGRE环境
R3-R5-R6-R7在MGRE环境下都需要把接口的工作方式改为P2MP类型
[r3]int t 0/0/0
[r3-Tunnel0/0/0]ospf network-type p2mp
R5上展开路由表,学习不到RIP区域(做重发布) 以及area 4(不规则区域)的路由信息
[r12]ospf
[r12-ospf-1]import-route rip
单向重发布解决不规则区域问题




4.减少LSA的更新量
汇总---有汇总的地方写空接口NULL 0
1.域间汇总 R3-R6-R7

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2.域外汇总 R12-R9

R5上查看路由表(display ip routing-table protocol ospf)


问题1:AREA 2为什么发送了两条路由条目
原因:RIP激活的接口所对应的直连网段就包括 172.16.65.8这条
问题2:做汇总前后172.16.65.8的protocol字段由OSPF变为O_ASE
原因:没做汇总时,通过R6的学习到的这一路由信息,一个是三类一个是五类(三类优于五类)加载到R5路由表上的就只有三类。做了汇总,R6学习到相当于是两了路由明细。
特殊区域
分别在area 1 area 2 area 3上配置特殊区域

给area 4下发缺省


现在整个内网可通

5.加快收敛
[r3] int t 0/0/0
[r3] ospf timer hello 10
6.所有设备均可访问R4环回---NAT技术
R3-R5-R6-R7都需要做NAT技术

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