Zte ZXR10 ZSR V2 - Chapter 5 RIPng Configuration

Chapter5
RIPngConguration
TableofContents
RIPngOverview.........................................................................................................5-1
ConguringRIPng......................................................................................................5-3
RIPngCongurationInstances...................................................................................5-5
5.1RIPngOverview
RIPngIntroduction
TheRoutingInformationProtocol(RIP)iswidelyappliedasamatureroutingstandardon
theInternet,especiallyonsomesmall-scaleandmedium-scalenetworks.Considering
thissituationandthecompatibilitybetweenRIPandIPv6,theInternetEngineeringT ask
Force(IETF)alteredtheexistingtechnologyandsetanRIPstandardunderIPv6,thatis,
RIPnextgeneration(RIPng).
RIPngisaUserDatagramProtocol(UDP)-basedprotocolusingport521totransmitand
receivedatapackets.Ingeneral,RIPngpacketsareclassiedintotwocategories:routing
informationpacketsandrequestpackets.
RIPngandRIP
RIPngisnotintendedtocreateacompletelynewprotocolbuttomakenecessaryalteration
totheRIPtoenableittoadapttotheroutingrequirementsunderIPv6.Therefore,RIPng
hasthesameworkingprinciplesastheRIP,exceptforchangesintheaddressandpacket
formats.
lAddresslength
RIPv1andRIPv2areIPv4-based.Theaddresseldconsistsofonly32bits.In
contrast,RIPngisIPv6-basedandallitsaddressescomprise128bits.
lSubnetmaskandprexlength
RIPv1isdesignedforuseinsubnet-freenetworksandthusdoesnotinvolve
thesubnetmaskconcept.Forthisreason,RIPv1cannotbeusedtopropagate
variable-lengthsubnetaddressesorCIDRclasslessaddresses.Thesupportfor
subnetroutingisaddedtoRIPv2,soitcanusesubnetmaskstodistinguishbetween
networkroutesandsubnetroutes.
IPv6addressprexeshaveexpressmeanings.Therefore,RIPngnolongerinvolves
thesubnetmaskconceptbutusestheprexlengthinstead.Similarly,duetotheuse
5-1
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential