D-IP路由协议分析.ppt

RIP的单播更新 R1 R2 R3 192.168.1.1/24 192.168.1.2/24 192.168.1.3/24 R1(config)# router rip R1(config-router)# passive-interface defaultR1(config-router)# neighbor 192.168.1.3(R3的操作与R1类似) 192.16.1.1/24 Loopback0 192.16.3.1/24 Loopback0 192.16.2.1/24 Loopback0 RIP V1和V2的共存 R1 R2 192.168.1.1/24 192.168.1.2/24 结果是R1学到R2上的环回口，而R2学不到R1上的环回口 R2#Show ip protocols 可以发现原因 Interface Send Recv Triggered RIP Key-chain e0 2 2 可如下修改 R2(config)# int e0 R2(config-if)# ip rip receive version 1 2 192.16.1.1/24 Loopback0 192.16.2.1/24 Loopback0 V1 V2 R1和R2彼此能学到对方的路由吗？ ip classless 命令 With ip classless Default With no ip classless Drop Router(config)#ip classless S0 Default route 172.16.0.0 E0 10.1.0.0 NetworkProtocol DestinationNetwork CCRIP 10.1.0.0 10.2.0.0 172.16.0.0 via0.0.0.0 Exit Interface E0S0 S0E0 10.2.0.0 To get to 10.7.1.1: 本章总结 完成本章的学习后，你应该能够掌握： 何时使用静态路由、何时使用动态路由 在Cisco路由器上设置静态路由 描述距离矢量的路由协议的工作原理 在Cisco路由器上设置RIP 利用show ip route、show ip protocols 和其他的调试命查看路由信息 问题回顾 1. 静态路由与动态路由比较，有什么优、缺点？ 2. 要实现一个大型网络的IP路由，应该使用什么路由协议？ Purpose: this figure states the chapter objectives. Emphasize: Read or state each objective so each student has a clear understanding of the chapter objectives. Purpose: This figure introduces students to static and dynamic routes. Emphasize: Static knowledge is administered manually—A network administrator enters it into the router’s configuration. The administrator must manually update this static route entry whenever an internetwork topology change requires an update. Static knowledge can be private—by default it is not conveyed to other routers as part of an update process. You can, however, configure the router to share this knowledge. Dynamic knowledge works differently. After the network administrator enters configuration commands to start dynamic routing, route knowledge is updated automatically by a routing process. Whenever new topology information is received from the internetwork, router