CCNA1216-第16章 距离矢量路由选择协议课件.ppt

主要内容 介绍路由信息协议（RIP）和内部网关协议（IGRP） 。 16.1 IP Routing Configuration Tasks Router configuration Select routing protocols Specify networks or interfaces Dynamic Routing Configuration Defines an IP routing protocol 16.2 RIP Overview Hop count metric selects the path Routes update every 30 seconds 1、RIP Configuration Starts the RIP routing process RIP Configuration Example 2、Verifying the Routing Protocol—RIP 3、Displaying the IP Routing Table 4、RIP避免路由环路方法 1）使用跳数限制，最大15跳,16跳为无穷大 2）距离矢量协议共用的方法 split horizon poison reverse hold-down timer triggered updates 5、关于IP classless路由 1）有类IP与无类IP 2）现在路由器的OS都支持无类路由 3）RIP V2 支持无类路由 16.3 关于IGRP 1）基于距离矢量协议 2）Cisco专有协议 3）度量标准改进 提高跳数限制（255） 增加了bandwidth、delay、reliability、load、MTU 4）不支持VLSM，可使用EIGRP代替。 Review Questions 1. What is an advantage of using a static route rather than a dynamic route?  What is a disadvantage? 2. What is the advantage of using IGRP  rather then RIP? What is a possible  disadvantage? 3. To scale up to very large IP networks,  what routing protocols are recommended? Objectives Upon completion of this chapter, you will be able to perform the following tasks: Configure HDLC and PPP protocols on a serial WAN connection Configure PAP and CHAP authentication on a PPP connection Verify proper point-to-point HDLC and PPP configuration An Overview of PPP PPP can carry packets from several protocol suites using Network Control Programs PPP controls the setup of several link options using LCP PPP LCP Configuration Options PPP Authentication Overview Two PPP authentication protocols: PAP and CHAP 4、配置 PPP Configuring CHAP Example hostname left username right password sameone ! int serial 0 ip address encapsulation ppp ppp authentication CHAP 5、什么是 ISDN? 6、Frame Relay Overview Virtual circuits make connections Connection-oriented service Frame Relay Stack Frame Relay Terminology Frame Relay Address Mapping Frame Relay Signaling Cisco supports three LMI standards: Cisco ANSI T1.617