session sw 002 sw vlan ver 3.2

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1、Vlan技术BenefitofVlanVoiceVlanVoiceVlanDVlanDVlanDVlanDVlanVlanVoiceVlanBroadcaststormSecurityVlanPurposeBenefitofVlanUnboundedfailuredomainsDifficultyinmanagementandsupportunknownMACunicastandmulticasttrafficIPofVlanVlan10：10.1.1.0Vlan30:10.1.3.0PerVlanPerIPsubnet=SingleIPB

2、roadcastDomainVlan20：10.1.2.0NetworkTrafficTypeVoiceVlanVoiceVlanDVlanDVlanDVlanDVlanVoiceInteractiveVideoStreamingVideoMission-CriticalDataNormalDataNetworkManagementScavengerVlanOpreationVlanClassStaticVlan(InterfaceMember)DynamicVlan(MACMember)ProtocolVlanIPVlanDynamicV

3、lan网络管理服务器AVLAN10CVLAN10BVLAN20DVLAN20ABDCDynamicVlan：VlanidmapMacaddress。SwitchASwitchBStaticVlanAVLAN10CVLAN10BVLAN20DVLAN20ABDCStaticVlan：VlanidmapInterface。SwitchASwitchBCableReference室外光纤室内光纤STP5类线CableReference(Cont)LinkConnectionLinkTypeModeWavelengthGigaStackStacki

4、ngSwitchtoSwitchTrunk-1000Base-ZXextendedSwitchtoSwitchTrunkSingleMode1550nm1000BASE-LX/LHlonghaulSwitchtoSwitchTrunkSingleMode1310nm1000BASE-SXShortWavelengthSwitchtoSwitchTrunkSingle/MultiMode850nm1000BASE-TSwitchtoServer/PCAccessPortLink-TypeABTrunkAccessAccessTrunkTrun

5、kAccessSingleVlanVlan1Vlan2Vlan3Vlan4Access-linkSingleVLAN.Trunk-linkMultiVLAN.PVIDABAccessAccessTrunkFramePayloadFramePayloadCDFramePayloadFramePayloadPVID=2PVID=2PVID=3PVID=3PVID=1PVID=1TrunkEncapsulation802.1QTagABAccessAccessTrunkFramePayloadFramePayloadSAPayload802.1Q

6、CDFramePayloadFramePayloadMAC2byteTPID(0x8100)PayloadNEWCRC2byteTCI12bitVlanID3bitCos1bitCfiPVID=2PVID=2PVID=3PVID=3PVID=1PVID=1DATypeCRCNativeVlanABAccessAccessTrunkFramePayloadFramePayloadCDFramePayloadFramePayloadPVID=2PVID=2PVID=3PVID=3PVID=1PVID=1EFramePayloadFramePay

7、loadVlanBroadcastABAccessAccessTrunkCDFramePayloadFramePayloadPVID=2PVID=2PVID=3PVID=3PVID=1PVID=1FPVID=3FramePayloadBroadcastVlanDesignVlanDesignLocalVLANs:LocalVlan的意思是Vlan的设计完全按照物理位置来进行,比如一个Vlan就存在于一台交换机或者一个配线间(楼层)或者一个建筑物内.End-to-EndVLANs:EndtoendVlan的意思是Vlan可能按业务的需要分布在

8、各个交换机上.LocalVLANsEnd-to-EndVLANsLocalVlanAssignoneuniquedataandvoiceVLANtoeachaccessswitc