Zte ZXR10 8900 Series - Sampling; Timeout Management

ZXR108900SeriesUserManual(BasicCongurationVolume)
vicetype,containedpacketnumber ,bytenumberandothertrafc
informationcanbeperformedstatistics.
Asamacroanalysistoolfornetworkcommunication,Netowtech-
nologydoesn’tanalyzethespecicdatacontainedineachpacket
innetwork,insteadittestscharacteristicsoftransmitteddataow,
whichenablesNetowtechnologywithgoodscalability:support-
inghigh-speednetworkportandlarge-scaletelecomnetwork.
Asforprocessingmechanism,IPFIXintroducesmulti-levelpro-
cessingprocedures:
�Inpreprocessingstage,IPFIXcanlterdataowofaspecic
levelorperformsamplingtopacketsonhigh-speednetwork
interfacebasedondemandsofnetworkmanagement.With
IPFIX,processingloadofnetworkdevicecanberelievedand
scalabilityofsystemcanbeenhancedwhiletheneededman-
agementinformationiscollectedandperformedstatistics.
�Inpostprocessingstage,IPFIXcanselecttooutputallcollected
originalstatisticsofdataowtoupper-layerserverfordata
sortingandsummary;alternatively,networkdevicecanper-
formdataaggregationtooriginalstatisticsinvariousmodes
andsendthesummarystatisticsresulttoupperlayerman-
agementserver .Thelatteronecanreducethedataquantity
outputbynetworkdevice,thusdecreasingrequirementtocon-
gurationofupperlayermanagementserverandpromoting
scalabilityandworkingefciencyofupperlayermanagement
system.
IPFIXoutputsdatainformatoftemplate.Networkdevicewillsend
packettemplateanddataowrecordsrespectivelytoupperlayer
managementserverwhenoutputtingdatainIPFIXformat.Packet
templatespeciesformatandlengthofpacketinsubsequently
sentdataowrecordformanagementserverprocessingsubse-
quentpackets.Meanwhiletoavoidpacketlossanderrorsinpacket
transmission,networkdevicerepeatssendingpackettemplateto
upperlayermanagementserverregularly.
Sampling
IPFIXsupportspacketnumber-basedsamplingaswellastime-
basedsampling.Samplingratecanbeconguredoneachinter-
faceseparately.
TimeoutManagement
Asforcollectedowdata,
�Incasedataarenotupdatedwithintheinactivetime,datawill
beoutputtoNMserver;
�Asforlongtimeactiveow,thedatawillalsobeoutputtoNM
serverafteractivetime.
162CondentialandProprietaryInformationofZTECORPORATION