Zte ZXR10 5900E Series User manual

ZXR105900ESeries
AllGigabit-PortIntelligentRoutingSwitch
UserManual(IPv6Volume)
Version2.8.23.B
ZTECORPORATION
ZTEPlaza,KejiRoadSouth,
Hi-TechIndustrialPark,
NanshanDistrict,Shenzhen,
P .R.China
518057
Tel:[phone]
Fax:[phone]
URL:http://ensupport.zte.com.cn
E-mail:[email protected]

LEGALINFORMATION
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RevisionHistory
RevisionNo.RevisionDateRevisionReason
R1.0Nov.9,2009FirstRelease
SerialNumber:sjzl20096395

Contents
AboutThisManual..............................................i
IPv6AddressConguration...............................1
IPv6Overview................................................................1
IPv6AddressFormat...................................................1
IPv6AddressPrex.....................................................2
IPv6AddressClassication..........................................2
UnicastAddress.................................................4
AnycastAddress................................................5
MulticastAddress...............................................6
IPv6Header...............................................................7
IPv6/IPv4DualProtocolStack......................................9
ConguringIPv6Address.................................................9
IPv6AddressCongurationExample.................................9
IPv6MaintenanceandDiagnosis......................................10
IPv6NeighborDiscoveryProtocol...................11
IntroductiontoNDP.......................................................11
ConguringNDP............................................................13
IPv6NDPCongurationExample.....................................14
IPv6NDPMaintenanceandDiagnosis...............................14
IPv6TunnelConguration...............................15
IPv6TunnelOverview.....................................................15
ConguringIPv6Tunnel..................................................17
ExampleofIPv6ManuallyConguredTunnel.....................18
IPv6TunnelMaintenanceandDiagnosis............................19
IPv6OtherCongurations...............................21
ConguringIPv6StaticRoute..........................................21
ConguringIPv6DHCPSNOOPING...................................21
ConguringDHCPv6relay...............................................23
OtherCongurationCommands.......................................24
MaintenanceandDiagnosisCommands............................24
CongurationExample...................................................25

RIPngConguration........................................27
RIPngOverview.............................................................27
ConguringRIPng..........................................................29
ConguringBasicRIPng.............................................29
ConguringRIPngEnhancedFunction...........................29
RIPngCongurationExample..........................................30
RIPngMaintenanceandDiagnosis....................................30
OSPFv3Conguration......................................33
OSPFv3Overview..........................................................33
DifferencesbetweenOSPFv3andOSPFv2.....................33
LSATypes................................................................35
ConguringOSPFv3.......................................................36
EnablingOSPFv3.......................................................36
ConguringOSPFv3InterfaceParameters.....................37
ConguringOSPFv3ProtocolParameters......................37
OSPFv3CongurationExample........................................38
OSPFv3MaintenanceandDiagnosis.................................39
IS-ISv6Conguration.....................................41
IS-ISv6Overview..........................................................41
ConguringIS-ISv6.......................................................42
EnablingIS-ISv6.......................................................42
ConguringIS-ISv6GlobalParameters.........................42
ConguringIS-ISv6InterfaceParameters.....................43
IS-ISv6CongurationExample........................................44
SingleAreaIS-ISv6CongurationExample...................44
Multi-AreaIS-ISv6CongurationExample....................45
IS-ISv6MaintenanceandDiagnosis.................................48
BGP4+Conguration.......................................51
BGP4+Overview...........................................................51
ConguringBGP4+........................................................52
EnablingBGP4+........................................................52
ConguringBGP4+RouteAdvertisement......................53
ConguringEBGPMulti-HopsofBGP4+........................53
ConguringBGP4+RouteReector..............................54
ConguringBGP4+Confederation................................56
ConguringBGP4+RouteAttributes.............................57
ConguringBGP4+IPv6AddressFamily.......................58
BGP4+CongurationExample.........................................59
BGP4+MaintenanceandDiagnosis..................................60

IPv6MulticastingRouteConguration............61
MulticastOverview........................................................61
MulticastAddress......................................................61
MLDProtocol.............................................................62
MulticastTree...........................................................62
PIM-SM....................................................................63
MLD-SNOOPING........................................................64
EnablingIPv6MulticastRoutingFunction..........................64
ConguringMLD............................................................65
ConguringaMLDGrouponanInterface......................65
ConguringMLDTimers.............................................65
ConguringPIM-SM.......................................................66
BootingIPv6PIM-SM.................................................66
ConguringStaticRPAddress.....................................66
ConguringCandidate-BSR.........................................66
ConguringCandidate-RP...........................................67
ConguringAreaBorderwiththeInterfacePIM.............67
LimitingBSRMessagetoAdvertisetoCandi-
date-RP............................................................68
SettingDRPriority.....................................................68
ConguringIntervaltoSendHelloMessage...................68
ConguringIntervaltoSendPIMJPMessage.................69
ConguringMLD-SNOOPING...........................................69
IPv6MulticastingRouteCongurationExample..................70
IPv6MulticastRouteMaintenanceandDiagnosis................72
Figures............................................................77
Tables.............................................................79
Glossary..........................................................81

AboutThisManual
PurposeThismanualisZXR105900E(V2.8.23.B)SeriesAllGigabit-Port
IntelligentRoutingSwitchUserManual(IPv6RoutingVolume).
ThismanualintroducesIPv6relatedfunctionssupportedbyZXR10
5900EincludingIPv6addressconguration,IPv6neighbordiscov-
eryprotocol,IPv6tunnelconguration,IPv6staticroutecongu-
ration,RIPngconguration,OSPFv3conguration,IS-ISv6cong-
uration,BGP4+congurationandIPv6multicastingroutecong-
uration.
Intended
AudienceThismanualisintendedforthefollowingengineers:
�on-sitemaintenanceengineers
�networkmonitorengineers
�systemmaintenanceengineer
WhatIsinThis
ManualZXR105900E(V2.8.23.B)SeriesAllGigabit-PortIntelligentRout-
ingSwitchUserManual(IPv6RoutingVolume)containsthefol-
lowingchapters:
ChapterSummary
Chapter1IPv6Address
Conguration
ThischapterintroducesIPv6address
concept,relatedcongurationcommand,
maintenanceanddiagnosis.
Chapter2IPv6
NeighborDiscovery
Protocol
ThischapterintroducesNDPaddress
concept,relatedcongurationcommand,
maintenanceanddiagnosis.
Chapter3IPv6Tunnel
Conguration
ThischapterintroducesIPv6tunnel
concept,relatedcongurationcommandand
congurationexample.
Chapter4IPv6Static
RouteConguration
ThischapterintroducesIPv6staticroute
concept,relatedcongurationcommandand
congurationexample.
Chapter5RIPng
Conguration
ThischapterintroducesRIPngconcept,
relatedcongurationcommandand
congurationexample.
Chapter6OSPFv3
Conguration
ThischapterintroducesOSPFv3concept,
relatedcongurationcommandand
congurationexample.
Chapter7IS-ISv6
Conguration
ThischapterintroducesIS-ISv6concept,
relatedcongurationcommandand
congurationexample.
Chapter8BGP4+
Conguration
ThischapterintroducesBGP4+concept,
relatedcongurationcommandand
congurationexample.
Chapter9IPv6
MulticastingRoute
Conguration
ThischapterintroducesIPv6multicasting
routeconcept,relatedconguration
commandandcongurationexample.
CondentialandProprietaryInformationofZTECORPORATIONi

ZXR105900ESeriesUserManual(IPv6Volume)
Related
Documentation
�ZXR105900E(V2.8.23.B)SeriesAllGigabit-PortIntelligent
RoutingSwitchHardwareManual
�ZXR105900E(V2.8.23.B)SeriesAllGigabit-PortIntelligent
RoutingSwitchUserManual(BasicCongurationVolume)
�ZXR105900E(V2.8.23.B)SeriesAllGigabit-PortIntelligent
RoutingSwitchUserManual(EthernetSwitchingVolume)
�ZXR105900E(V2.8.23.B)SeriesAllGigabit-PortIntelligent
RoutingSwitchUserManual(IPv4RoutingVolume)
�ZXR105900E(V2.8.23.B)SeriesAllGigabit-PortIntelligent
RoutingSwitchUserManual(IPv6RoutingVolume)
iiCondentialandProprietaryInformationofZTECORPORATION

Chapter1
IPv6Address
Configuration
TableofContents
IPv6Overview....................................................................1
ConguringIPv6Address.....................................................9
IPv6AddressCongurationExample.....................................9
IPv6MaintenanceandDiagnosis..........................................10
IPv6Overview
IPv6isthenextversionofIPprotocol.Withthedevelopmentof
Internet,IPv4addressesof32bitswillbedriedup.IPv4willbe
supersededbyIPv6inthenearfuture.
IPv6isrstdescribedinRFC2460byIETF .Itprovidesservices
suchaspointtopointsecurity,QoSandglobaluniqueaddress.
StructureofIPv6allowsuserstoupgradeIPv4addressestoIPv6
addressesconveniently.
IPv6developmentistoprovideplentyofglobaluniqueaddresses
tomeetmoreandmorerequirementsofintelligentdevicesinnet-
work.ThesedevicesincludePersonalDataAssistant(PDA),mobile
telephoneandnetworkaccessdeviceforfamily.
IPv6AddressFormat
AnIPv6addressformatisX:X:X:X:X:X:X:X,amongwhichXisa
4-bithexinteger(16-bit),forexample:
FEDC:0DB0:7674:3110:FEDC:BC78:7654:1234
FEDC:0DB0:0:0:6:600:7654:6789
IPv6addressesusuallycontaincontinuoushex0.Forwritingcon-
venience,use“::”marktoreplacecontinuoushex0.Thisreduces
thelengthofIPv6addressesinwriting.IPv6addressformatis
describedinRFC2373.Table1showsexamplesforcompressed
formatsofIPv6addresses.
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ZXR105900ESeriesUserManual(IPv6Volume)
Caution:
“::”markcanonlybeusedonceinanIPv6address.Itistoreplace
thelongestcontinuoushex0.Capitalsandlowercasesarenot
distinguishedinIPv6addresses.
TABLE1COMPRESSEDFORMATS
IPv6AddressTypeNormalFormatCompressedFormat
Unicastaddress1080:0:0:0:8:800:200C:123
4
1080::8:800:200C:1234
MulticastaddressFF01:0:0:0:0:0:0:123FF01::123
Loopbackaddress0:0:0:0:0:0:0:1::1
Unspeciedaddress0:0:0:0:0:0:0:0::
InTable1,loopbackaddressisusedtosendIPv6datapacketsto
nodeitself.ItsfunctionisthesameasthatofIPv4.Forexample,
aninitializednodecanuseloopbackaddressaspacketsourcead-
dressbeforereceivingIPv6address.
IPv6AddressPrefix
IPv6addressprexisexpressedinthesimilarwayasIPv4address
prex.Itis:IPv6address/prexlength.Theprexisadecimal
integer .Itisusedtodecidehowmanybitsfromthemostleft
areusedasprex.Forexample,12AB:0D86:5454:6634::/32isa
correctprex.
IPv6AddressClassification
IPv6addressof128bitsisusedtoidentifyeitheraninterfaceora
groupofinterfaces.ThreetypesofIPv6addressesaredescribed
asfollows:
�Unicastaddress:theidentierofasingleinterface.Thepack-
etssenttoaunicastaddresswillbetransmittedtotheinterface
withthisaddressidentier .
�Multicastaddress:theidentierofagroupofinterfacesteth-
eredtodifferentnodes.Thepacketssenttoamulticastad-
dresswillbetransmittedtoalltheinterfaceswiththisaddress
identier .
�Anycast:theidentierofagroupofinterfacestetheredtodif-
ferentnodes.Thepacketssenttoananycastaddresswillbe
transmittedtoaninterfacewiththisaddressidentier(select-
ingthenearestonebycalculatingthedistancebasedonrout-
ingprotocol).
2CondentialandProprietaryInformationofZTECORPORATION

Chapter1IPv6AddressConguration
ThereisnobroadcastaddressinIPv6.Broadcastaddressfunction
isreplacedbythatofmulticast.
Therstfewbitsoftheaddressspecifytheaddresstype.The
numberofthebitsisvariable.Therstfewbitsarecalledformat
prex.TheseprexesareshowninT able2.
TABLE2IPV6ADDRESSSPACE
AllocationPrexOccupationRateof
AddressSpace
Reserved000000001/256
Unallocated000000011/256
ReservedforNSAP
allocated
00000011/128
ReservedforIPX
allocated
00000101/128
Unallocated00000111/128
Unallocated000011/32
Unallocated00011/16
Globalunicast0011/8
Unallocated0101/8
Unallocated0111/8
Unallocated1001/8
Unallocated1011/8
Unallocated1101/8
Unallocated11101/16
Unallocated111101/32
Unallocated1111101/64
Unallocated11111101/128
Unallocated1111111001/512
Link-localunicast11111110101/1024
Site-localunicast11111110111/1024
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ZXR105900ESeriesUserManual(IPv6Volume)
AllocationPrexOccupationRateof
AddressSpace
Multicast111111111/256
UnicastAddress
IPv6unicastaddressisaninterfaceidentierofsinglenodein
network.Packetsthatuseunicastaddressasdestinationaddress
aresenttointerfacewiththisidentier .Therearefourtypesof
unicastaddresses,asdescribedinfollows:
GlobalUnicast
AddressGlobalunicastaddressusesstrictaggregationofrouteprexes.
Thisreducesentriesinroutingtable.ItsformatisshowninT able
3.
TABLE3GLOBALUNICASTADDRESSFORMAT
3bits45bits16bits64bits
FormatprexGlobalroute
prex
Site-level
aggregationID
InterfaceID
FieldsinFigure31aredescribedasfollows:
1.Formatprex:formatprexofglobalunicastaddress,3bits.
Currentlyitis001.
2.Globalrouteprex:45bits.
3.Site-levelaggregationID:itisusedtodividesubnetsbysingle
organizationinitsownaddressspace.IPv6subnetshavethe
similarfunctionasthatofIPv4.Itisupto65,535subnetsin
IPv6.
4.InterfaceID:itisusedtoidentifytheinterfaceonalink.In-
terfaceIDmustbeuniqueonalinkeveninamuchlarger
scale.Inmanysituations,itisthesamewiththeinterfacelink
layeraddress,oritisbasedontheinterfacelinklayeraddress.
Identiersofglobalunicastaddressandotherkindofaddress
typesmustbe64bits,inmodiedEUI-64format.
ForallIEEE802interfacetypes(includingEthernetinterfaceand
FDDIinterface),therstthreebytes(24bits)ofinterfaceIDare
obtainedfromOrganizationUniqueIdentier(OUI)MACaddress.
ThefourthandfthbytesarexedhexadecimalnumberFFFE.The
lastthreebytes(24bits)areobtainedfromthelastthreebytes
ofMACaddress.BeforeinterfaceIDisnished,itisnecessaryto
settheseventhbitintherstbyte.Ifthevalueofthisbitis0,it
meansitisalocalmanagementinterfaceID.Ifitis1,itmeansit
isaglobaluniqueinterfaceID.
Forotherinterfacetypes,suchasserialinterface,ATMandframe
reply,themethodtoformaninterfaceIDisthesameasthatof
IEEE802interfacetypes.Asthesetypesofinterfacesdonothave
MACaddresses,theMACaddressistherstMACaddressindevice
MACaddresspool.
Site-LocalUnicast
AddressSite-localunicastaddressconsistsofprexFEC0::/10(11111110
11),subnetIDandinterfaceID.Itisallocatedtoasitetouse
anddoesnotoccupyaglobalunicastaddress.Site-localunicast
4CondentialandProprietaryInformationofZTECORPORATION

Chapter1IPv6AddressConguration
addressisprivateaddressandonlycanbeusedinlocalsite.Its
formatisshowninT able4.
TABLE4SITE-LOCALUNICASTADDRESSFORMAT
10bits38bits16bits64bits
11111110110SubnetIDInterfaceID
Link-LocalUnicast
AddressLink-localunicastaddresscanbeautomaticallyconguredonin-
terfacewithprexFE80::/10(1111111010).Itisusuallyusedin
NeighborDiscoveryProtocol(NDP)andun-statefulautomaticcon-
guration.Localnodescanusethisaddresstocommunicatein-
steadofglobalunicastaddressandsite-localaddress.IPv6routers
cannottransmitdatapacketsthatuselink-localunicastaddress
assourceordestinationaddresstootherlinks.
Formatofsite-localunicastaddressisshowninTable5.
TABLE5SITE-LOCALUNICASTADDRESSFORMAT
10bits54bits64bits
11111110100InterfaceID
IPv4-Compatible
IPv6AddressThehigh96bitsofIPv4-compatibleIPv6addressareall0.The
low32bitsareIPv4addresses.Itsformatis0:0:0:0:0:0:A.B.C.D
or::A.B.C.D.
IPv4-compatibleIPv6addressisallocatedtonodeswhichsupport
IPv4andIPv6doubleprotocolstacks.
ThewholeIPv4-compatibleIPv6addressisusedasthenodeIPv6
address.TheIPv4addressoflow32bitsisusedasthenodeIPv4
address.
FormatofthistypeofaddressisshowninTable6.
TABLE6FORMATOFIPV6ADDRESSCOMPATIBLEWITHIPV4
ADDRESS
96bits32bits
0000…0000IPv4Address
AnycastAddress
Anycastaddressescanbeallocatedtointerfacesofmultiplenodes.
Thesenodesprovidethesameservices.Packetsthatuseanycast
addressasdestinationaddressaretransmittedtothenearestin-
terfacewiththisaddress.Whethertheinterfaceisthenearestor
notismeasuredindistancecalculationofroutingprotocol.
Anycastaddressisallocatedfromunicastaddressspace.Itcan
useanyunicastaddressformat.Itisunabletodistinguishany-
castaddressandunicastaddressbytheappearances.Ifaunicast
addressisallocatedtomorethanoneinterfaces,itbecomesan
CondentialandProprietaryInformationofZTECORPORATION5

ZXR105900ESeriesUserManual(IPv6Volume)
anycastaddress.Itisrequiredtopointoutitisananycastad-
dressifitisallocatedtoanode.
Caution:
Anycastaddressescanonlybeusedonrouters.Hostscannotuse
anycastaddresses.Anycastaddressescannotbeusedassource
addressesindatapackets.
AnycastaddressformatofsubnetrouterisshowninTable7.
TABLE7ANYCASTADDRESSFORMATOFSUBNETROUTER
128bits
Subnetprex0000…0000
Subnetprexisaprexforspeciedlink.SetinterfaceIDofin-
terfaceunicastaddressonthelinktobe0,thenitbecomessubnet
routeranycastaddress.
Packetsthatusesubnetrouteranycastaddressasdestinationad-
dressaretransmittedtoarouterinthissubnet.Allroutersinthis
subnetshouldsupportsubnetrouteranycastaddress.
Whenanodecommunicateswitharouterinaroutergroupthat
isinaremotenetwork,subnetrouteranycastaddresscanbeap-
plied.
MulticastAddress
PrexofIPv6multicastaddressisFF00::/8(11111111).Multicast
addressisanidentierforagroupofinterfaces.Theseinterfaces
belongtodifferentnodes.Packetsthatusemulticastaddressas
destinationaddressaretransmittedtoallinterfacesinthismulti-
castgroup.MulticastaddressformatisshowninT able8.
TABLE8FORMATOFMULTICASTADDRESS
8bits4bits4bits112bits
11111111FlagRangeGroupID
FieldsinT able8aredescribedasfollows:
1.Inthersteld,8bitsof1meanthisisamulticastaddress.
2.Whenthevalueinageldis0,itmeansthisisapermanent
multicastaddress.Ifthevalueinageldis1,itmeansthis
isatemporarymulticastaddress.
Rangeeldisusedtolimittherangeofmulticastgroup.The
rangescorrespondingtovaluesareshowninT able9.
6CondentialandProprietaryInformationofZTECORPORATION

Chapter1IPv6AddressConguration
TABLE9IPV6MULTICASTRANGEVALUE
ValueRange
1Localnode
2Locallink
5Localsite
8Localorganization
EGlobal
3.GroupIDisusedtodeneapermanentmulticastgroupora
temporarymulticastgroupinsomerange.
AnIPv6node(routerorhost)shouldbeaddedtothefollowing
multicastgroups:
�AllnodemulticastgroupsFF02:0:0:0:0:0:0:1(locallink)
�Requestnodemulticastgroups
Requestnodemulticastaddressconsistsofprex
FF02:0:0:0:0:1:FF00:0000/104andlow24bitsofIPv6
address(unicastaddressoranycastaddress).Forexam-
ple,requestnodemulticastaddressthatisrelatedtoIPv6
address4037::01:800:200E:8C6CisFF02::1:FF0E:8C6C.
Requestnodemulticastaddressisusedinneighborrequest
information.
IPv6Header
IPv4headerisshowninT able10.
TABLE10IPV4HEADER
4-bit
ver-
sion
4-bit
header
length
8-bittypeof
service(TOS)
16-bittotallength(inbyte)
16-bitidentications4-bit
ags
12-bitfragmentoffset
8-bittimetolive
(TTL)
8-bitprotocol16-bitheaderchecksum
32-bitsourceIPaddress
32-bitdestinationIPaddress
24-Options8-lling
Data
IPv6headerisshowninT able11.
CondentialandProprietaryInformationofZTECORPORATION7

ZXR105900ESeriesUserManual(IPv6Volume)
TABLE11IPV6HEADER
4-bit
version
4bittrafc
class
24-bitowlabel
16bitpayloadlength8-bitnext
header
8-bithop
limit
128-bitsourceaddress
128-bitdestinationaddress
extensepacketheaderinformation
data
FieldsinT able11aredescribedasfollows:
�Version
withtheIPv4header ,itisafour-biteldindicatingtheIPver-
sion.Here,itissettobinary0110toindicateversion6.
�Trafcclass
itisaneight-biteldthatcorrespondstotheeight-bitIPv4
ToSeld.GiventheevolutionoftheT oSeldovertheyears,
botharenowusedforDifferentiatedClassofService(Diff-
Serv).Eventhoughthereisacorrespondenceofthiseldwith
theoldToSeld,itsnamemoreaccuratelyreectsthecurrent
usageofthevaluescarriedhere.
�Flowlabel
itisaelduniquetoIPv6.Theintentionofthis20-biteldis
toallowlabelingofparticularowsoftrafc;thatis,packets
thatarenotjustoriginatedbythesamesourceandgoingto
thesamedestination,butthatbelongtothesameapplications
atthesourceanddestination.
�Payloadlength
itspeciesthelengthofthepayload,inbytes,thatthepacket
isencapsulating.
�Nextheader
itspecieswhichheaderfollowstheIPv6packetheader .In
this,itisverysimilartotheProtocoleldintheIPv4header
and,infact,isusedforthesamepurposewhenthenextheader
isanupper-layerprotocolheader .InIPv6,theheaderfollowing
thepacketheadermightbeanupper-layerprotocolheader ,or
anextensionheader .
�Hoplimit
thevalueinthiselddeterminesthemaximumhopsthatIPv6
packetscanpassby.Whenthepacketspassbyarouter ,the
valuereducesbyone.AsthereisnochecksuminIPv6header ,
therouterdoesnotneedtocalculatechecksumagainwhen
thevaluereducesbyone.Thissavestime.
8CondentialandProprietaryInformationofZTECORPORATION

Chapter1IPv6AddressConguration
IPv6/IPv4DualProtocolStack
WhenIPv4isupgradedtoIPv6,someapplicationprogramson
networknodesarealsoupgradedtouseIPv6protocolstack.Some
otherapplicationprogramsarenotupgraded,andtheystilluse
IPv4protocolstack.TomakeIPv4stackandIPv6stackcoexist,
usedualprotocolstack.Protocolstructureofdualprotocolstack
isshowninTable12.
TABLE12PROTOCOLSTRUCTUREOFDUALPROTOCOLSTACK
ApplicationLayerProtocol
TCP/UDPprotocols
IPv6protocolsIPv4protocols
Protocolsofdatalinklayerandphysicallayer
ZTEZXROSsupportsIPv6/IPv4dualprotocolstack.IfbothIPv4
addressandIPv6addressareconguredonaninterface,bothIPv4
packetsandIPv6packetsaretransmittedonthisinterface.
ConfiguringIPv6Address
St-
ep
CommandFunction
1ZXR10(config)#interface<interface-name>Thisentersintolayer3
interfacecongurationmode.
2ZXR10(config-if-vlanX)#ipv6enableThisenablesIPv6.
3ZXR10(config-if-vlanX)#ipv6address<ipv6-prefix>/
<prefix-length>
ThissetsIPv6addressonan
interface.
4ZXR10(config-if-vlanX)#ipv6addresslink-local
<ipv6-prefix>
Thissetsinterfacelinklocal
address.
IPv6AddressConfiguration
Example
ThisshowsanexampleofconguringIPv6addressandMTU.
ZXR10(config)#interfacevlan11
ZXR10(config-if-vlan11)#ipv6enable
ZXR10(config-if-vlan11)#ipv6address2005:1234::1/64
ZXR10(config-if-vlan11)#ipv6mtu1500
or
ZXR10(config)#interfacevlan11
ZXR10(config-if-vlan11)#ipv6enable
CondentialandProprietaryInformationofZTECORPORATION9

ZXR105900ESeriesUserManual(IPv6Volume)
ZXR10(config-if-vlan11)#ipv6addresslink-local
fe80::1111:2222:3333:4444
ZXR10(config-if-vlan11)#ipv6mtu1500
IPv6Maintenanceand
Diagnosis
TocongureIPv6addressmaintenanceanddiagnosis,performthe
followingsteps.
St-
ep
CommandFunction
1ZXR10#showipv6interface<interface-name>Thisviewsdetailed
informationonIPv6interface.
2ZXR10#showipv6interface[<interface-name>]briefThisviewsbriefinformation
onIPv6interface.
10CondentialandProprietaryInformationofZTECORPORATION

Chapter2
IPv6NeighborDiscovery
Protocol
TableofContents
IntroductiontoNDP...........................................................11
ConguringNDP................................................................13
IPv6NDPCongurationExample.........................................14
IPv6NDPMaintenanceandDiagnosis...................................14
IntroductiontoNDP
IPv6doesnotexecutetheaddressresolutionprotocol(ARP)or
thereserveaddressresolutionprotocol(RARP)anymorebutsu-
persedesthemwiththecorrespondingfunctionsoftheneighbor
discoveryprotocol(NDP).Thefollowingareprimarydifferences
betweenIPv6NDPandIPv4ARP .
�InIPv4,theARPisanindependentprotocol.Itprovidescon-
versionbetweenIPaddressesandlink-layeraddresses.Dif-
ferentARPsshouldbedenedfordifferentlink-layerprotocols.
InIPV6,theNDPcontainstheARPfunctionsandrunsoverthe
Internetcontrolmessageprotocol(ICMPv6).Itfeaturesmore
universal,morecontent,andapplicabletovariouslink-layer
protocols.
�ARPprotocol,ICMPv4routerdiscoveryandICMPv4redirection
packetarebasedonbroadcast,whileNDPneighbordiscovery
packetisbasedontheefcientmulticastandunicast.
�Thereachabilitydetectionismeanttodeterminewhetherthe
hostorrouterrepresentedbythecorrespondingIPaddress
canstillreceiveandsendpackets,towhichIPv4hasnounied
solution.TheNDPdenesthereachabilitydetectionprocessto
ensurethatnoIPpacketwillbesenttoablackhole.
RFC2461(IPv6neighbordiscovery)describestheneighbordis-
coverymechanism,whichprovidessomedifferentpurposes,in-
cludingthefollowingpoints:
�RouterdiscoveryThismechanismhelpsahosttoidentifythe
localrouter .
�PrexdiscoveryThismechanismisusedbynodestodetermine
anaddressprexthatisusedtospecifythelink-localaddress
andanaddressprexthatshouldbesenttoarouterforfor-
warding.
CondentialandProprietaryInformationofZTECORPORATION11

ZXR105900ESeriesUserManual(IPv6Volume)
�ParameterdiscoveryThismechanismhelpsnodestodetermine
theinformationlikelink-localMTU.
�AddressautocongurationThismechanismisusedforIPv6
nodeautoconguration.
�AddressresolutionThismechanismsubstitutesARPandRARP
tohelpnodesdeterminethelink-layeraddressofthelocal
node,namelytheneighbor ,fromthedestinationIPaddress.
�NexthopdeterminationThismechanismismeanttodetermine
thenextdestinationofapacket,thatis,determinewhether
thedestinationofapacketisonalocallink.Ifitisonthe
locallink,thenthenexthopisthedestination.Otherwise,the
packetshouldrouteandthenexthopwillserveasarouter .
Theneighbordiscoverycanbeusedtodeterminearouterto
beused.
�NeighborunreachabilitydetectionNeighbordiscoverycanhelp
nodestodeterminewhetheraneighbor(destinationnodeor
router)isreachable.
�DuplicateaddressdetectionNeighbordiscoveryhelpsanode
todeterminewhetheranaddressitwantstousehasbeen
occupiedonthelocallink.
�RedirectionSometimestheforwardingrouterselectedbya
nodeisnottheoptimumforapackettobeforwarded.Inthis
case,theforwardingroutercanredirectthenodetosendthe
packettoanoptimumrouter .
Theneighbordiscoveryconductstheexecutionbydeningthe
specialICMPpackets,including:
�RouterSolicitation(RS)message
Whenaninterfaceonahostisenabled,insteadofwaitingtill
nextcycletime,thehostsendsRSmessagesimmediately.
�RouterAdvertisement(RA)messages
Aroutersendsthismessageperiodicallyorwhenitrepliesto
RSmessage.RAmessagesincludesaddressprexandmaxi-
mumhopsandsoon.
Addressprexincludeslink-localaddressprexandautomatic
congurationaddressprex.Theagofaddressprexdecides
itstype.
Thehostuselink-localaddressprexitreceivestoestablish
andmaintainalist.Thelistdescribeswhetherthedestination
ofpacketsisonlocallinksorthepacketsneedtobetransmit-
ted.
RAmessagetellsthehosthowtoperformaddressautocong-
uration.Forexample,theroutercanspecifythehosttouse
statefuladdressautoconguration(DHCPv6)orstatelessad-
dressautoconguration.
RAmessagealsoincludessomeInternetparameterssuchas
maximumhops,andoptionallinkparameterssuchaslinkMTU.
Itispossibletoconguresomeimportantparameterstogether
onarouter ,andmaketheroutersendtheseparameterstoits
neighbors.
�NeighborSolicitation(NS)messages
12CondentialandProprietaryInformationofZTECORPORATION