Zte ZXR10 ZSR V2 - Page 189

Chapter14IPv6PIM-SMConguration
iii.ItisrecommendedtocongureacandidateRPontheloopbackinterfacetoreduce
networkoscillationduetothephysicalinterfacebeingup/down.
5.CongureIPv6PIM-SMglobalparameters.
InIPv6PIM-SM,differentparametershavedifferentdefaultvalues.Conguringthese
parameterscanoptimizethenetwork.
StepCommandFunction
1ZXR10(config-mcast-ipv6-pim)#spt-threshold
infinity
CongureshandoveroftheSPT.
infinity:causestherouternever
tomovetotheSPTtree.It
remainsonthesharedRPtree.
2ZXR10(config-mcast-ipv6-pim-if-interface-
name)#dr-priority<priority>
CongurestheDRpriorityona
PIMinterface.
Range:0-4294967295,default:
1.
3ZXR10(config-mcast-ipv6-pim-if-interface-
name)#bsr-border
Setsaninterfacetotheborderof
thePIMdomain.
4ZXR10(config-mcast-ipv6-pim-if-interface-
name)#hello-interval<seconds>
Congurestheintervaltosend
Hellomessages.
Bydefault,thethresholdtohandtheRPTovertotheSPTis0.
OnlythelasthopDRandRPcanhandovertotheSPTontheirowninitiative.By
default,thehandoverbeginswhentheRPreceivestherstRegistermessage.Forthe
lasthopDR,thepolicyofSPThandovercanbeconguredbyusingasinglemulticast
groupasthecontrolgranularity.Ifthehandoverthresholdofagroupissettoinnity,
handoverwillnotbeperformed.Bydefault,aslongasthereistrafc,ahandoveris
performed.
ADRmustbeelectedinashared(ormulti-access)segment.ThecandidateDRwith
thehighestprioritybecomestheDR.IfseveralcandidateDRshavethesamehighest
priority,theonewiththelargestIPaddressbecomestheDR.
Inasharedsegmentconnectingtothemulticastsource,onlytheDRcansendRegister
messagestoRP .Inasharedsegmentconnectingtoreceivers,onlytheDRreplytothe
MLDJoinmessagesandLeavingmessages,andsendPIMJoin/Pruningmessagesto
upstreamdevices.TherouterpriorityiscontainedintheHellomessagesexchanged
withneighbors,withthedefaultvalueof1.
ThefollowingexampleshowshowtoconguretheDRpriorityongei-1/1.
ZXR10(config)#ipv6multicast-routing
ZXR10(config-mcast-ipv6)#routerpim
ZXR10(config-mcast-ipv6-pim)#interfacegei-1/1
ZXR10(config-mcast-ipv6-pim-if-gei-1/1)#dr-priority20
ZXR10(config-mcast-ipv6-pim-if-gei-1/1)#exit
14-5
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential