Zte ZXR10 8900 Series User manual

ZXR108900Series
10GigabitRoutingSwitch
UserManual(EthernetSwitchingVolume)
Version2.8.02.C
ZTECORPORATION
NO.55,Hi-techRoadSouth,ShenZhen,P .R.China
Postcode:518057
Tel:[phone]
Fax:[phone]
URL:http://ensupport.zte.com.cn
E-mail:[email protected]

LEGALINFORMATION
Copyright©2010ZTECORPORATION.
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oroftheirrespectiveowners.
Thisdocumentisprovided“asis”,andallexpress,implied,orstatutorywarranties,representationsorconditionsaredis-
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TheultimaterighttointerpretthisproductresidesinZTECORPORATION.
RevisionHistory
RevisionNo.RevisionDateRevisionReason
R1.320100205Editionupdate
SerialNumber:sjzl20093838

Contents
AboutThisManual.............................................I
SafetyInstruction.............................................1
SafetyInstruction...........................................................1
SafetySigns..................................................................1
VLANConguration...........................................3
VLANOverview..............................................................3
VLANType.................................................................4
VLANT ag...................................................................4
VLANLinkType..........................................................5
DefaultVLAN.............................................................5
PVLAN.......................................................................5
QinQ.........................................................................6
SubnetVLAN.............................................................7
ProtocolVLAN............................................................7
VLANTranslation........................................................7
EnhancedVLANTranslation..........................................8
SuperVLAN................................................................8
SVLAN......................................................................8
ConguringVLAN..........................................................11
CreatingVLAN...........................................................11
SettingVLANLinkTypeonInterface.............................12
AddingVLANMemberPort..........................................13
SettingPortNativeVLAN............................................13
SettingPortVLANFiltering..........................................14
SettingPortFameTypeFiltering..................................14
CreatingVLANL3Interface.........................................15
Bindingdpi-template..................................................15
VLANCongurationExample.......................................15
ConguringPVLAN.........................................................16
ConguringQinQ...........................................................17
ConguringSubnetVLAN................................................18
CondentialandProprietaryInformationofZTECORPORATIONI

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
ConguringProtocolVLAN..............................................19
ConguringVLANTranslation..........................................20
ConguringEnhancedVLANTranslation............................21
ConguringSuperVLAN..................................................22
ConguringSVLAN........................................................25
VLANMaintenanceandDiagnosis.....................................29
STPConguration............................................31
STPOverview...............................................................31
SSTPMode...............................................................31
RSTPMode...............................................................32
MSTPMode...............................................................32
BPDUProtection........................................................34
ConguringSTP............................................................38
EnablingSTP.............................................................38
ConguringSTPMode................................................38
ConguringSTPParameters........................................39
CreatinganInstance..................................................40
ConguringMSTCongurationNameandVersion..........40
ConguringSwitchPriority..........................................41
ConguringSTPProtocolTransparentTransmission
ID...................................................................41
ConguringBPDUProtection...........................................42
ConguringEdgePortBPDUProtection.........................42
ConguringPortLoopbackProtection...........................42
ConguringPortRootProtection..................................43
STPCongurationExample.............................................43
STPMaintenanceandDiagnosis.......................................45
MACTableOperation.......................................47
MACAddressT ableOverview...........................................47
CompositionandMeaningofMACAddressT able............47
MACAddressCategories.............................................48
MACAddressT ableCreationandDeletion.....................49
ConguringMACT able...................................................50
ConguringMACAddressAgingTime...........................50
BurningMACAddress.................................................50
BindingMACAddress.................................................51
ConguringPortMACAddressLearning........................51
LimitingNumberofMACAddresses..............................52
ConguringPortMACAddressLearningProtection.........52
ConguringMACAddressFiltration...............................53
IICondentialandProprietaryInformationofZTECORPORATION

Conguring256KMode..............................................54
ViewingMACAddressT able.........................................54
MACAddressT ableCongurationExample........................55
ESMConguration...........................................57
ESMOverview...............................................................57
ConguringESM............................................................57
InitializingESM.........................................................57
ConguringESMMode...............................................58
ESMCongurationExample............................................58
ESMMaintenanceandDiagnosis......................................58
LinkAggregationConguration.......................59
LinkAggregationOverview.............................................59
ConguringLinkAggregation..........................................60
LinkAggregationCongurationExample...........................61
LinkAggregationMaintenanceandDiagnosis.....................62
IGMPSnoopingConguration..........................65
IGMPSnoopingOverview................................................65
MulticastGroupJoin...................................................66
MulticastGroupLeave................................................66
FastLeave................................................................67
ConguringIGMPSnooping.............................................67
EnablingIGMPSnoopingFunction................................67
ConguringIGMPSnoopingssm-mapping.....................68
ConguringProxyQueryFacility..................................68
RestrictingMulticastGroup.........................................69
ConguringStaticIGMPSnooping................................69
ModifyingIGMPSnoopingTimeParameters...................70
ConguringMaster/SlaveRouterInterface....................70
IGMPSnoopingCongurationExample.............................71
IGMPSnoopingMaintenanceandDiagnosis.......................72
LinkProtectionConguration..........................75
ZESRConguration........................................................75
ZESROverview.........................................................75
ConguringZESR......................................................76
ZESRCongurationExample.......................................77
ZESSConguration........................................................79
ZESSOverview.........................................................79
ConguringZESS......................................................80
Dual-UplinkProtection....................................................80
CondentialandProprietaryInformationofZTECORPORATIONIII

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
Dual-UplinkProtectionOverview..................................80
Dual-UplinkProtectionCongurationExample...............81
EthernetOAMConguration............................85
Conguring802.3ah......................................................85
802.3ahOverview.....................................................85
RemoteDiscovery.............................................86
RemoteLoopback..............................................86
LinkMonitor.....................................................86
Conguring802.3ah..................................................87
802.3ahCongurationExample...................................90
MaintenanceandDiagnosisof802.3ah.........................91
ConguringCFM............................................................93
CFMOverview...........................................................93
ConguringCFM........................................................95
OAMLinkControlEventCongurationExample............102
CFMProxyCardFunctionIllustration..........................103
CFMCongurationExample.......................................104
CFMMaintenanceandDiagnosis................................107
EPONOLTConguration................................109
EPONOLTOverview.....................................................109
ConguringEPONOLT..................................................111
ConguringOLTInterface........................................111
ConguringEPONGlobalParameters..........................112
ConguringONULocalManagement...........................116
ConguringOLTOpticalLineProtection.......................117
ConguringQoS......................................................118
ConguringOLTAlarm.............................................119
ConguringONURemoteManagement.......................120
EPONOLTCongurationExample...................................125
EPONOLTMaintenanceandDiagnosis............................127
UDLDConguration.......................................133
UDLDOverview...........................................................133
ConguringUDLD........................................................135
UDLDCongurationExample.........................................136
ConguringOne-commandforCollection
Function........................................................137
One-commandforCollectionFunctionOverview...............137
IntroductiontoRunningEnvironmentofOne-command
CollectionFunction..............................................137
IVCondentialandProprietaryInformationofZTECORPORATION

BasicCongurationofOne-commandforCollection
Function.............................................................138
IntroductiontoOne-commandforCollecting
Information...................................................138
IntroductiontoOne-commandforCollectingFault
DiagnosisInformation......................................139
IntroductiontoOne-commandforConguring.............140
CommandofViewingOne-commandfor
Conguring.....................................................142
Figures..........................................................145
Glossary........................................................147
CondentialandProprietaryInformationofZTECORPORATIONV

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
Thispageisintentionallyblank.
VICondentialandProprietaryInformationofZTECORPORATION

AboutThisManual
PurposeThismanualisZXR108900Series(V2.8.02.C)10GigabitRouting
SwitchUserManual(EthernetSwitchingVolume)andappliesto
ZXR108902/8905/8908/891210Gigabitroutingswitch.
Intended
AudienceThismanualisintendedforthefollowingengineers:
�On-sitemaintenanceengineers
�Networkmonitoringengineers
�Systemmaintenanceengineers
WhatIsinThis
ManualThismanualcontainsthefollowingcontents:
ChapterOverview
Chapter1Safety
Instruction
Describessafetyinstructionsandsignsused
inthismanual.
Chapter2VLAN
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
VLAN,PVLAN,QinQ,SubnetVLAN,Protocol
VLAN,VLANtranslation,SuperVLANand
SVLAN.
Chapter3STP
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
STPandBPDUprotection.
Chapter4MACT able
Operation
Thischapterdescribesbasicconceptand
relatedoperationsofMACaddresstable.
Chapter5ESM
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
ESM.
Chapter6Link
Aggregation
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
linkaggregation.
Chapter7IGMP
SnoopingConguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
IGMPSnooping.
Chapter8
LinkProtection
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
ZESRandZESS.
Chapter9Ethernet
OAMConguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
EthernetOAM.
Chapter10EPONOLT
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
EPONOLT .
CondentialandProprietaryInformationofZTECORPORATIONI

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
ChapterOverview
Chapter11UDLD
Conguration
Thischapterdescribesbasicconcept,
congurationandcongurationexampleof
UDLD.
Chapter12Conguring
One-commandfor
CollectionFunction
ThischapterdescribesOne-commandfor
CollectionFunction.
Related
DocumentationThefollowingdocumentationisrelatedtothismanual:
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
HardwareInstallationManual
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
HardwareManual
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(BasicConguration)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(EthernetSwitching)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(IPv4Routing)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(IPv6)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(MPLS)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(DPI)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitchUser
Manual(Firewall)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(Index)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(BasicCongurationVolumeI)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(BasicCongurationVolumeII)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(BasicCongurationVolumeIII)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(EthernetSwitching)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(IPv4RoutingVolumeI)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(IPv4RoutingVolumeII)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(IPv6)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(MPLS)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(NetworkManagement)
IICondentialandProprietaryInformationofZTECORPORATION

AboutThisManual
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(QoS)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(Security)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(VoiceandVideo)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(Multicast)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(DPI)
�ZXR108900Series(V2.8.02.C)10GigabitRoutingSwitch
CommandReference(Firewall)
CondentialandProprietaryInformationofZTECORPORATIONIII

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
Thispageisintentionallyblank.
IVCondentialandProprietaryInformationofZTECORPORATION

Chapter1
SafetyInstruction
TableofContents
SafetyInstruction...............................................................1
SafetySigns......................................................................1
SafetyInstruction
Onlydulytrainedandqualiedpersonnelcaninstall,operateand
maintainthedevices.
Duringthedeviceinstallation,operationandmaintenance,please
abidebythelocalsafetyspecicationsandrelatedoperationin-
structions,otherwisephysicalinjurymayoccurordevicesmaybe
broken.Thesafetyprecautionsmentionedinthismanualareonly
supplementoflocalsafetyspecications.
Thedebugcommandsonthedeviceswillaffecttheperformance
ofthedevices,whichmaybringseriousconsequences.Sotake
caretousedebugcommands.Especially,thedebugallcom-
mandwillopenalldebugprocesses,sothiscommandmustnot
beusedonthedeviceswithservices.Itisnotrecommendedto
usethedebugcommandswhentheusernetworksareinnormal
state.
ZTECorporationwillassumenoresponsibilityforconsequencesre-
sultingfromviolationofgeneralspecicationsforsafetyoperations
orofsafetyrulesfordesign,productionanduseofthedevices.
SafetySigns
Thecontentsthatusersshouldpayattentiontowhentheyinstall,
operateandmaintaindevicesareexplainedinthefollowingfor-
mats:
Warning:
Indicatesthemattersneedingcloseattention.Ifthisisignored,
seriousinjuryaccidentsmayhappenordevicesmaybedamaged.
CondentialandProprietaryInformationofZTECORPORATION1

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
Caution:
Indicatesthemattersneedingattentionduringconguration.
Note:
Indicatesthedescription,hint,tip,andsoonforcongurationop-
erations.
2CondentialandProprietaryInformationofZTECORPORATION

Chapter2
VLANConfiguration
TableofContents
VLANOverview..................................................................3
ConguringVLAN..............................................................11
ConguringPVLAN.............................................................16
ConguringQinQ...............................................................17
ConguringSubnetVLAN....................................................18
ConguringProtocolVLAN..................................................19
ConguringVLANTranslation..............................................20
ConguringEnhancedVLANTranslation................................21
ConguringSuperVLAN......................................................22
ConguringSVLAN............................................................25
VLANMaintenanceandDiagnosis.........................................29
VLANOverview
VirtualLocalAreaNetwork(VLAN)isatechnologythatdividesa
physicalnetworkintomultiplelogical(virtual)LAN.EveryVLAN
hasaVLANidentier(VID).
TakingadvantageofVLANtechnology,networkadministratorscan
dividetheusersinthesamephysicalLANintodifferentbroadcast
domains(onebroadcastdomainisoneVLAN).Thisensuresthat
theuserswiththesamedemandsbelongtosamebroadcastdo-
mainanduserswithdifferentdemandsbelongtodifferentbroad-
castdomain.
EveryVLANislikeanindependentlogicalLAN,havingthesame
attributeswithphysicalLAN.Allbroadcastandunicasttrafcinthe
sameVLANarerestrictedtotheVLANinsteadofbeingforwarded
tootherVLAN.Communicationbetweendevicesbelongingtodif-
ferentVLANisforwardedbytheLayer3routers.
VLANhasthefollowingfeatures:
�Reducingbroadcasttrafcinthenetwork
�Enhancingnetworksecurity
�Simplifyingnetworkmanagementandcontrol
CondentialandProprietaryInformationofZTECORPORATION3

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
VLANType
VLANtypeisdeterminedbythemethoddividingareceivedframe
toaspecicVLAN.ZXR108900seriesswitchsupportsport-based
VLAN,whichisthemostsimpleandeffectivemethod.Itassigns
portsofswitchingequipmenttodifferentVLANs;consequently,
thetrafcreceivedfromtheportbelongstotheVLANconnected
totheport.
Forexample,ifport1,port2andport3belongtothesameVLAN,
andotherportsbelongtootherVLANs,framereceivedbyport1
canbetransmittedoverport2andport3exclusively.Ifauserin
VLANmovestoanewplace,itdoesnotbelongtotheoldVLAN
unlessVLANisrecongured.
VLANTag
MultipleVLANservicescanbetransmittedinonelinkiftheVLAN
thattheframeresidesincanbepresentedinacertainmethod
whenframeistransmittinginthenetwork.IEEE802.1Qimple-
mentsthefunctionbyinsertingaVLANtagintoEthernetframe
structure.
VLANtagis4-bytelong,inEthernetframe,itslocationisbehind
sourceMACaddress,andbeforelength/typesegment.Formatof
VLANtagisshowninFigure1.
FIGURE1FORMATOFVLANTAG
VLANtagismostfrequentlyappliedinthecaseofcross-switch
creationofVLAN;heretheconnectionbetweenswitchesiscalled
Trunk.Cross-multiple-switchVLANcanbecreatedthroughoneor
moretrunksafterapplyingtag.Whentheportconnectedtothe
switchreceivesataggedframe,itcanjudgewhichVLANtheframe
belongstoaccordingtoVLANtag.
Each802.1QportisallocatedwithadefaultVLANID,whichis
calledPVID.Whentheportreceivesuntaggedframe,theframeis
consideredtobelongtoportdefaultVLAN,andforwardedinthe
VLAN.
ZXR108900seriesswitchsupportsIEEE802.1Qstandardtag.
4CondentialandProprietaryInformationofZTECORPORATION

Chapter2VLANConguration
VLANLinkType
PortsonZXR108900seriesswitchsupportthefollowingtypesof
VLANlinks.
�Accesslink
Accesslinkisusedtoconnectthedevices(forexample,work-
station)thatcannotidentifyVLANtagtoVLANswitchport.It
onlytransmitsuntaggedVLANframeandisassociatedwith
onlyoneVLAN.
�Trunklink
TrunklinkconnectstwodevicesthatcanidentifyVLANtagand
transmitsmultipleVLANservices.Itonlytransmitstagged
VLANframeandcanbearmultipleVLANs.Mostpopulartrunk
linkistheonewhichconnectstwoVLANswitches.
�Hybridlink
Hybridlinkcantransmittaggedanduntaggedframes.How-
ever ,foraspecicVLAN,allframestransmittedbythehybrid
linkmustbeofsametype.
DefaultVLAN
ZXR108900seriesswitchinitiallyhasadefaultVLANwiththefol-
lowingfeatures:
�VLANIDofdefaultVLANis1.
�NameofdefaultVLANisVLAN0001.
�DefaultVLANcontainsallports.
�AllportsofdefaultVLANisuntaggedbydefault.
PVLAN
Toisolatemessagesofusersforbetternetworksecurity,traditional
solutionisusedtoassignaVLANtoeachuser .Limitationsofthis
methodaredescribedasfollows:
�MaximumnumberofVLANssupportedbyIEEE802.1Qstan-
dardis4094andthenumberofusersislimited;consequently,
itgoesagainstnetworkexpansion.
�EachVLANcorrespondstooneIPsubnet,soalargequantity
ofsubnetsaredividedisawasteofIPaddresses.
�PlanningandmanagementofalargequantityofVLANsandIP
subnetscomplicatesnetworkmanagement.
NewtechnologyPrivateVLAN(PVLAN)solvesalltheproblems.
FunctionPVLANclassiesportsinVLANintotwocategories:Isolateport
thatconnectswithusers,andPromiscuousportthatconnectsto
CondentialandProprietaryInformationofZTECORPORATION5

ZXR108900SeriesUserManual(EthernetSwitchingVolume)
router .IsolateportcancommunicatewithPromiscuousportonly.
CommunicationbetweenIsolateportsisdisabled.So,portsinthe
sameVLANareisolated,userscanonlycommunicatewithdefault
gateway.Thisensuresthenetworksecurity.
QinQ
QinQisatunnelingprotocol,basedonIEEE802.1Qencapsulation,
whichisalsocalledVLANstack.QinQtechnologyistoaddaVLAN
tag(outertag)outsideoldVLANtag(innertag).Outertagcan
shieldtheinnertag.
QinQrequiresnosupportfromprotocol,bywhichL2VPNisreal-
ized.ItisparticularlysuitableforthesmallLANwithlayer3switch
asthebackbone.
TypicalnetworkingorQinQtechnologyisshowninFigure2.Port
connectingusernetworkiscalledcustomerportandtheportcon-
nectingSPnetworkiscalleduplinkport.EdgeaccessdeviceofSP
networkiscalledProviderEdge(PE).
FIGURE2TYPICALQINQNETWORK
UsernetworkisaccessedtoPEthroughTrunkVLANmode.Up-
linkportsinServiceProvider(SP)networkaresymmetricallycon-
nectedthroughTrunkVLANmode.
WhenmessagereachescustomerportofswitchAfromusernet-
work1,nomatterthemessageistaggedoruntagged,switchA
insertsoutertag(VLANIDis10)forcibly.IntheSPnetwork,the
messagetransmitsalongVLAN10portsuntilitreachesswitchB.
SwitchBndsthattheportconnectingusernetwork2iscustomer
port,soitpeelsofftheoutertagaccordingtotraditional802.1Q.
Itresumestheoriginalmessageandtransmitsittousernetwork
2.
6CondentialandProprietaryInformationofZTECORPORATION

Chapter2VLANConguration
Asaresult,usernetwork1and2canperformtransparenttrans-
missionthroughSPnetwork.Usernetworkcandeneitsown
privatenetworkVLANIDthatdoesnothaveaconictwithSPnet-
workVLANID.
SubnetVLAN
VLANbasedonsubnetisappliedtotheVLANnetworkofLayer2,
andimplementsexiblecongurationofdataframe.VLANbased
onsubnettransmitstheframetocorrespondingVLANaccordingto
thesourceIPaddressofthedataframe.VLANthatiscomposed
accordingtosourceIPaddressmakesitpossibleforusersindif-
ferentnetworksectiontotransmitframesthroughmultiVLANs.
ButthememberidentityoftheVLANisnotchanged.
SubnetVLANspacesthedataframesofdifferentsourceIPad-
dressesout,sousersgetthedatabelongingtothesamenetwork
sects.PRItotransmitsubnetVLANofUNTAGframeishigherthan
protocolVLANandPVID.TAGframetransmitsdatainTAGmode,
soitsPRIishigherthansubnetVLAN.
ProtocolVLAN
VLANbasedonprotocolisexibleandapplicabletoLayer3.A
VLANthatisbasedonprotocolisplottedaccordingtotheencap-
sulationprotocolinnetworklayerofthedatapacket.Packetsof
samelabelareinthesameprotocolVLAN.VLANthatiscomposed
accordingtotheprotocolsinnetworklayermakesitpossiblefor
thebroadcastingregiontocovermultiswitches.Userscanmove
freelywithinthenetwork,andthememberidentityoftheVLANis
notchanged.
Whentheuser’sphysicalpositionischangedthenthereisnoneed
toconguretheVLANtowhichtheuserbelongs;insteaditplots
theVLANaccordingtotheprotocoltype.Itdoesnotrequireaddi-
tionallabeltoidentifytheVLAN.Inthisway,thecommunication
quantityisreduced.
ProtocolVLANdefaults“enable”onphysicalinterfaces.Itplotsthe
VLANaccordingtothelabelinthedatapackets.Itspacespackets
ofdifferentlabelsout,sotheusergetsthedata’sinthesame
VLAN.
VLANTranslation
VLANtranslationisalsocalledVLANmapping.ItallowstheVLAN
IDsofdifferentEthernetswitchesusedtoaccesstoboundaryto
setassuperposition.ItmodiestheiterativeVLANIDsofdifferent
switchestodifferentVLANIDsthroughtheVLANtranslationfunc-
tion,andtransmitstheminuplinkinterfaces.Soitspacesusers
outincoreswitchesofLayer2.Itpredigeststhecongurationsof
switchesaccessingtoboundary.
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ZXR108900SeriesUserManual(EthernetSwitchingVolume)
EnhancedVLANTranslation
ThefunctionandapplicationofenhancedVLANtranslationaresim-
ilartothoseofVLANtranslation.Thesevenfunctionsaddedonthe
basisofVLANtranslationareasfollows:
�Importsinglelayertag,addoutertagaccordingtopolicy.
�Importsinglelayertag,modifyinnertagandaddoutertag
accordingtopolicy.
�Importdouble-layertag,deleteoutertagaccordingtopolicy.
�Importdouble-layertag,deleteoutertagandmodifyinnertag
accordingtopolicy.
�Importdouble-layertag,modifyoutertagaccordingtopolicy.
�Importdouble-layertag,modifyinnertagaccordingtopolicy.
�Importdouble-layertag,modifyinnerandoutertagsaccording
topolicy.
Ofwhichpolicymeans:
ModifysinglelayertagaccordingtoaccessportandVLANtag.
Modifydouble-layertagaccordingtoaccessportandinnerand
outertagsatthesametime.
ZZXR108902/8905/8908/8912supports4096enhancedVLAN
translationswhenwholedevicelinecardsareHboards.
SuperVLAN
TraditionalISPnetworkassignsoneIPsubnettoeachuser .Three
IPaddressesareoccupiedwhenonesubnetisassigned,whichre-
spectivelyserveassubnetnumber ,broadcastaddressanddefault
gateway.AlargequantityofunassignedIPaddressesintheuser
subnetscannotbeassignedtootherusers.Thismethodwastes
numberofIPaddress.
SuperVLANsolvestheproblemeffectively.Itcanconvertmultiple
VLANs(calledsubvlan)intoaSuperVLAN.Allthesubvlansusethe
sameIPsubnetanddefaultgateway.
TakingadvantageofSuperVLANtechnology,ISPneedstoassign
oneIPsubnetforSuperVLANandcreateonesub-VLANforeach
user .Allsub-VLANscanassignIPaddressesinSuperVLANsubnet
exiblyanduseSuperVLANdefaultgateway.Everysub-VLANisan
independentbroadcastdomain,ensuringisolationbetweendiffer-
entusers.Communicationbetweensub-VLANsisroutedthrough
SuperVLAN.
SVLAN
SelectiveVLAN(SVLAN)isakindofVLANtunneltechniques.
SVLANtechnologyistoaddaVLANtag(outertag)outsideold
8CondentialandProprietaryInformationofZTECORPORATION