目录
第一章 认识网络设备.....................................................................................................................3
第二章 IP 路由基础 ........................................................................................................................6
1. IP 路由基础 ..........................................................................................................................6
1.1IP 路由概述 .................................................................................................................6
1.2 RIB 与 FIB ....................................................................................................................7
1.3 路由表 ........................................................................................................................7
1.4 IP 路由查找最长匹配原则.........................................................................................8
1.5 路由的来源 ................................................................................................................9
1.6 动态路由协议.............................................................................................................9
1.7 路由迭代 ....................................................................................................................9
1.8 数据转发流程..........................................................................................................10
1.PC1 将报文发往网关设备 R1。 .........................................................................................10
3.R2 通过查找路由表项转发给 R3. ......................................................................................10
2.IP 路由高级应用 .................................................................................................................10
2.1 路由引入 ..................................................................................................................10
1.配置 OSPF 引入外部路由 ...................................................................................................11
第三章 OSPF 基础 .........................................................................................................................12
1.动态路由协议简介..............................................................................................................12
1.1 动态路由协议的分类..............................................................................................12
1.2 距离矢量路由协议..................................................................................................12
1.3 链路状态路由协议..................................................................................................12
2.OSPF 简介 ............................................................................................................................15
2.1 OPSF 概述 .................................................................................................................15
2.2 OSPF 应用场景 .........................................................................................................16
2.3 OSPF 基础术语 .........................................................................................................16
2.4 OSPF 三大表 .............................................................................................................19
3.OSPF 工作过程 ....................................................................................................................21
3.1 建立邻居关系...........................................................................................................22
3.2 建立邻接关系...........................................................................................................22
3.3 DR 与 BDR 的作用 ....................................................................................................24
4.OSPF 的基本配置 ................................................................................................................27
4.1 OSPF 配置命令 .........................................................................................................27
4.2 OSPF 配置举例 .........................................................................................................28
第四章 OSPF 路由计算 .................................................................................................................32
1.区域内路由计算 .................................................................................................................32
2.区域间路由计算 .................................................................................................................35
2.1 区域间路由计算过程..............................................................................................35
2.2 区域间路由防环机制..............................................................................................35
2.3 虚连接的作用及配置..............................................................................................37
3.外部路由计算 .....................................................................................................................38
第五章 OSPF 特殊区域及安全配置 ..............................................................................................42
1.Stub 区域和 Totally Stub 区域 ............................................................................................42
