HCIP-IERS学习笔记1：OSPF Simon肖-IT课堂
HCIP-IERS学习笔记1：OSPF
OSPF路由基础 ................................................................................................................... 3
查询命令 ..................................................................................................................... 4 修改网络接口类型 ................................................................................................... 4 修改接口的 OSPF 代价值 .................................................................................... 5 配置 OSPF 的 Silent-interface ........................................................................... 5 指定路由ID ................................................................................................................ 5 LSDB同步过程 .......................................................................................................... 5 OSPF单区域路由：.......................................................................................................... 7
修改 OSPF hello 和 dead 时间参数 ............................................................... 8 修改 OSPF 的参考带宽值 .................................................................................... 9 OSPF 缺省路由发布及验证 .................................................................................. 9 控制 OSPF DR/BDR 的选举 ................................................................................. 9 OSPF区域间路由 ............................................................................................................ 10
三类LSA（link state advertisement 通告） ................................................. 10 防止环路产生：
................................................................................................. 11
区域间虚链接： ..................................................................................................... 11 配置区域之间的路由过滤 ................................................................................... 12 OSPF外部路由： ............................................................................................................ 12
将直连路由汇总并引入到 OSPF 区域 ........................................................... 13 OSPF 引入缺省路由 ............................................................................................. 13 路由汇总 ................................................................................................................... 13
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HCIP-IERS学习笔记1：OSPF Simon肖-IT课堂
修改 OSPF 中两类路由的优先级 .................................................................... 14 外部路由类型： ..................................................................................................... 16 末端区域stub .......................................................................................................... 18 Totally Stub区域 .................................................................................................... 19 OSPF NSSA区域（ Not-So-Stubby Area） ................................................ 19 观察 NSSA 给 OSPF 带来的变化................................................................... 21 LSA总结 .................................................................................................................... 21
OSPF更新机制 .......................................................................................................................... 22 OSPF认证机制 .......................................................................................................................... 23 排除故障 ..................................................................................................................................... 24
在区域内排除 OSPF 故障 .................................................................................. 24 OSPF 认证故障排除 ............................................................................................. 25 步骤五. 虚电路故障排除 ..................................................................................... 26
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HCIP-IERS学习笔记1：OSPF Simon肖-IT课堂
OSPF路由基础
INTEGER<1-65535> Process ID
abr-asbr Information of the OSPF ABR and ASBR
asbr-summary ASBR)
bfd brief cumulative error global-statistics graceful-restart interface ldp-sync lsdb mesh-group mpls-te nexthop peer request-queue retrans-queue routing Information of aggregate addresses for OSPF(only for Bidirectional forwarding detection 双向转发 Brief information of OSPF processes简介 Statistics information统计信息 Error information OSPF global statistics Interface information
LDP-OSPF synchronization Information Link state database
Detail information for Mesh-Group Traffic engineering function Nexthop information A neighbor router Link state request list Link state retransmission list OSPF route table
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HCIP-IERS学习笔记1：OSPF
