ccna1215-第15章 路由选择和路由选择协议

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1、第15章路由选择和路由选择协议主要内容介绍路由选择和路由选择协议及区别，介绍距离矢量、链路状态和混合型三种路由选择方式，及如何解决路由选择问题。15.1路由选择基础172.16.1.010.120.2.015.1路由选择基础NetworkProtocolDestinationNetworkConnectedLearned10.120.2.0172.16.1.0ExitInterfaceE0S0RoutedProtocol:IPRoutersmustlearndestinationsthatarenotdirectlyconn

2、ected172.16.1.010.120.2.0E0S0WhatisaRoutingProtocol?Routingprotocolsareusedbetweenrouterstodeterminepathsandmaintainroutingtables.Oncethepathisdeterminedaroutercanroutearoutedprotocol.NetworkProtocolDestinationNetworkConnectedRIPIGRP10.120.2.0172.16.2.0172.1

3、7.3.0ExitInterfaceE0S0S1RoutedProtocol:IPRoutingprotocol:RIP,IGRP172.17.3.0172.16.1.010.120.2.0E0S0StaticRouteUsesaroutethatanetworkadministratorentersintotheroutermanually15.2StaticRoutes172.16.2.1SO1、StaticRoutes172.16.1.0B172.16.2.2NetworkAConfigureunidirection

4、alstaticroutestoandfromastubnetworktoallowcommunicationstooccur.BStubNetworkDefinesapathtoanIPdestinationnetworkorsubnetRouter(config)#iproutenetwork[mask]{address

5、interface}[distance][permanent]StaticRouteConfigurationStubNetworkiproute172.16.1.0255.255.255.0172.16

6、.2.1172.16.2.1SOStaticRouteExample172.16.1.0B172.16.2.2NetworkABThisisaunidirectionalroute.Youmusthavearouteconfiguredintheoppositedirection.StubNetworkiproute0.0.0.00.0.0.0172.16.2.22、DefaultRoutes172.16.2.1SO172.16.1.0B172.16.2.2NetworkABThisrouteallowsthestubnetwo

7、rktoreachallknownnetworksbeyondrouterA.3、路由的验证及故障排除1）是否正确配置showrunning-config2）查看路由表showiproute3）检查端口状态showinterface4）检验IP配置，并使用ping测试连通。DynamicRouteUsesaroutethatanetworkroutingprotocoladjustsautomaticallyfortopologyortrafficchanges15.3DynamicRoutesOverview15.4Class

8、esofRoutingProtocolsDistanceVectorHybridRoutingLinkStateCBADCDBA例：RIP、IGRP例：EIGRP例：OSPFAutonomousSystem100AutonomousSystem200IGPs:RIP,IGRPEGPs:BGP15.5AutonomousSystems:InteriororExteriorRoutingProtocolsAnautonomoussystemisacollectionofnetworksunderacommonadministrati

9、vedomainIGPsoperatewithinanautonomoussystemEGPsconnectdifferentautonomoussystemsRouterconfigurationSelectroutingprotocolsSpecifynet