CCNA 3-3交换机的VLAN和TRUNK.ppt

《CCNA 3-3交换机的VLAN和TRUNK.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、Medium-SizedSwitchedNetworkConstructionImplementingVLANsandTrunksIssuesinaPoorlyDesignedNetworkUnboundedfailuredomainsLargebroadcastdomainsLargeamountofunknownMACunicasttrafficUnboundedmulticasttrafficManagementandsupportchallengesPossiblesecurityvulnerabilities

2、VLANOverviewVLAN=BroadcastDomain=LogicalNetwork(Subnet)SegmentationFlexibilitySecurityDesigningVLANsforanOrganizationVLANdesignmusttakeintoconsiderationtheimplementationofahierarchicalnetworkaddressingscheme.Thebenefitsofhierarchicaladdressingare:Easeofmanageme

3、ntandtroubleshootingMinimizationoferrorsReducednumberofroutingtableentriesGuidelinesforApplyingIPAddressSpaceAllocateoneIPsubnetperVLAN.AllocateIPaddressspacesincontiguousblocks.NetworkTrafficTypesTraffictypestoconsiderwhendesignatingVLANs:NetworkmanagementIPte

4、lephonyIPMulticastNormaldataScavengerclassAdvantagesofVoiceVLANsPhonessegmentedinseparatelogicalnetworksPrividesnetworksegmentationandcontrolAllowsadministratorstocreateandenforceQoSLetsadministratorsaddandenforcesecuritypoliciesVLANOperationVLANMembershipMo

5、des802.1QTrunking802.1QFrameUnderstandingNativeVLANsVTPFeaturesCannotcreate,change,ordeleteVLANsSendsandforwardsadvertisementsSynchronizesCreateVLANsModifyVLANsDeleteVLANsSendsandforwardsadvertisementsSynchronizesCreatelocalVLANsonlyModifylocalVLANsonlyDeletelo

6、calVLANsonlyForwardsadvertisementsDoesnotsynchronizeVTPModesVTPOperationVTPadvertisementsaresentasmulticastframes.VTPserversandclientsaresynchronizedtothelatestrevisionnumber.VTPadvertisementsaresentevery5minutesorwhenthereisachange.VTPPruningConfiguringVLANs

7、andTrunksConfigureandverifyVTP.Configureandverify802.1Qtrunks.CreateormodifyaVLANontheVTPserverswitch.AssignswitchportstoaVLANandverify.Executeadds,moves,andchanges.SavetheVLANconfiguration.VTPdefaultsfortheCiscoCatalystswitch:VTPdomainname:NoneVTPmode:Servermod

8、eVTPpruning:Enabledordisabled(modelspecific)VTPpassword:NullVTPversion:Version1Anewswitchcanautomaticallybecomepartofadomainonceitreceivesanadvertisementfromaserver.A