User manual

Table Of Contents
Chapter1VLANConguration
SubnetVLANisolatesdataframesfromdifferentsourceIPad-
dressessothatauserhasaccesstodatafromitsownsubnet
only.ThesubnetVLANpriorityinuntaggedframeforwardingis
higherthanthatofprotocolVLANorPVID;thepriorityoftagged
frameforwardinginthetaggedmodeishigherthanthatofsubnet
VLAN.
PortisenabledonSubnetVLANbydefaultandalsocanbedisabled
accordingtoactualdemands.
ZXR105900/5200supportsupto256subnetVLANs,thatis,sup-
portsprocessingdataframesfrom256sourceIPsubnets.
ProtocolVLAN
Protocol-basedVLANappliestoL3networksorthoserunningmany
protocols.Protocol-basedVLANdividespacketsbasedontheir
networklayerencapsulationprotocol.Packetswiththesametag
belongtothesameprotocolVLAN.Thisnetworklayerprotocol
basedVLANcanbroadcastpacketscrossseveralVLANswitches.
Itallowsuserstomovefreelyinthenetworkwhileremaintheir
VLANmembershipunchanged.
ThissolutioneliminatestheneedtoreconguretheVLANwhena
usermovestoanotherphysicallocationinthenetwork.Inaddi-
tion,asVLANsareidentiedbasedontheprotocoltypeinsteadof
attachedframetag,trafcthroughthenetworkreduces.
ProtocolVLANisnotonlyenabledonallphysicalportsbydefault
butalsodisabledonportsaccordingtodemands,whichidenties
thatVLANsarebasedonthepackettagonly.Itseparatespackets
withdifferenttagssothatusershaveaccesstodatafromother
usersinthesameVLANonly.
ZXR105900/5200supportsupto16protocolVLANs.Thismeans
thatprotocolVLANssupportprocessingpacketswith16kindsof
tags.
VLANTranslation
VLANtranslationpermitstheswitchesofdifferentuserstohave
sameVLANID.WithVLANtranslation,coreswitchmodiesthe
sameVLANIDofedgeswitchesintothedifferentVLANID.This
functionisolateuserincoreswitchandsimplythecongurationof
edgeswitch.
ZXR105900/5200support768VLANtranslation.
SuperVLAN
OnatraditionalISPnetwork,oneIPsubnetisallocatedtoeach
user ,whichmeansthattheoccupationofthreeIPaddressesbya
singleuserasitssubnetaddress,broadcastaddressanddefault
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