Zte ZXR10 ZSR V2 - Chapter 10 IPv6 Multicast

Chapter10
IPv6Multicast
TableofContents
MulticastOverview...................................................................................................10-1
ConguringPublicIPMulticast.................................................................................10-3
10.1MulticastOverview
MulticastIntroduction
AsareplacementofIPv4,IPv6usesa128–bitaddressstructuretosolvetheproblemofIP
addressshortage.Atthesametime,IPv6optimizessomecharacteristics.IPv4multicast
solvestheproblemofsingle-pointsendingandmulti-pointreceiving,anditimplements
high-efciencypoint-to-multipointdatatransmission.Itsavesalotofnetworkbandwidth
andreducesnetworkload.Therefore,multicastisappliedandenhancedinIPv6.
ThemostobviousdifferencebetweenIPv6multicastandIPv4multicastisthattheIPv6
multicastaddressmechanismisimproved.Thegroupmembermanagement,multicast
packetforwardingandmulticastpathestablishmentofIPv6aresimilartothoseofIPv4.
MulticastAddressIntroduction
AnIPv6addressisof128–bitlong,dividedbycolonsintoeightbyteswithfourhexnumbers
ineachbyte,suchasFEDC:BA98:7654:3210:FEDC:BA98:7654:3210.AnIPv6multicast
addressidentiesagroupofinterfacesthatbelongtodifferentnodes.Anodecanbelong
to0orseveralmulticastgroups.Apacketsenttoamulticastaddressisreceivedbyall
interfacesidentiedbythemulticastaddress.
AccordingtoRFC,someIPv6multicastaddresseshavebeenallocatedpermanently,as
listedinTable10-1.
Table10-1IPv6MulticastAddressAllocation
NameAddressDescription
ReservedmulticastaddressFF0x::Notallocatedtoanymulticast
address
AllnodemulticastaddressesFF01::1(node-local)
FF02::1(link-local)
AllroutermulticastaddressesFF01::2(node-local)
FF02::2(link-local)
FF05::2(site-local)
10-1
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential