Zte ZXR10 ZSR V2 - Page 74

ZXR10ZSRV2CongurationGuide(IPv6)
àToprocesstherouterLSAduringSPFcomputation,twoagbitsRandV6are
addedtotheoptionseld.TheOSPFheadercontainsanExampleID,thus
allowingtheoperationofmultipleOSPFprotocolinstancesoverasinglelink.
LSATypes
AnLSAistheunittoconstructtheOSPFv3linkstatedatabase.ArouterusesLSAsto
formacompletenetworktopologyandfurthergeneratearoutingtable.OSPFv3hasthe
followingtypesofLSAs.
lRouterLSA
Itslinkstatetypeis0x2001.ItcangenerateoneormultipleLSAsoneachrouter
withinanarea.
lNetworkLSA
Itslinkstatetypeis0x2002.ItcangeneratenetworkLSAsforeachbroadcastand
NBMAlinkwithinanarea,whichsupportstwoormultiplerouters.NetworkLSAsare
createdbyDRonthislink.
lInter-AreaprexLSA
Itslinkstatetypeis0x2003.ItisequivalenttotheType-3LSAinOSPFv2.Createdby
anareaborderrouter,theinter-areaprexrouterLSAdescribesIPv6addressprexes
inotherareas.Forstubareas,inter-areaprexLSAcanalsobeusedtodescribethe
defaultroute.
lInter-ArearouterLSA
Itslinkstatetypeis0x2004.ItisequivalenttotheType-4LSAinIPv4.Createdbythe
ABR,itdescribestheASBRtootherareas.
lASexternalLSA
Itslinkstatetypeis0x4005.ItiscreatedbytheASBRanddescribestheASBRto
otherareas.
lLinkLSA
Itslinkstatetypeis0x0008.ArouteradvertisesaseparatelinkLSAtoeachlink
connectingwithit.TheseLSAshavealocallinkoodingrangeandwillnotbeooded
outoftherelatedlink.
lIntra-areaprexLSA
Itslinkstatetypeis0x2009.Arouterusestheintra-areaprexLSAtoadvertise
oneormultipleIPv6addressprexes,whichareassociatedwiththerouteritself,the
connectedstubnetworksegmentortheconnectedtransitnetworksegment.
TwotypesofLSAsareaddedtoOSPFv3.TheyaretheLinkLSAandtheIntraArea
PrexLSA.Table6-1liststhebriefsimilaritiesanddifferencesbetweenOSPFv3LSAs
andOSPFv2LSAs.
6-4
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential