Zte ZXR10 8900 Series - Chapter 10 QoS Configuration; QoS Overview

Chapter10
QoSConfiguration
TableofContents
QoSOverview...................................................................91
ConguringQoS................................................................96
ConguringHQoS............................................................103
QoSCongurationExamples.............................................109
QoSMaintenanceandDiagnosis........................................111
QoSOverview
Traditionalnetworkprovidesservicesatitsbesteffortandallpack-
etsaretreatedinthesameway.Networkequipmentsendsmes-
sagestothedestinationintheprincipleof“rstinrstservice”
butdoesnotguaranteetransferreliabilityandtransferdelayof
messages.
Withthecontinuousemergenceofnewapplicationsanewrequire-
mentfornetworkservicequalityisraisedbecausetraditionalnet-
workatthebesteffortcannotsatisfytherequirementforappli-
cations.Forexample,usercannotuseVoIPserviceandreal-time
imagetransmissionnormallyifpackettransferdelayistoolong.
Tosolvethisproblem,providesystemwithcapabilityofsupporting
QoS.
FunctionsWhenQoSiscongured,itselectsspecicnetworktrafcprioritiz-
ingitaccordingtoitsrelativeimportanceanduse.Implementing
QoSinthenetworkmakesnetworkperformancemorepredictable
andbandwidthutilizationmoreeffective.QoSprovidesthefollow-
ingfunctions:
�Trafcclassication
�Trafcpolicing
�Trafcshaping
�Queueschedulinganddefault802.1p
�Redirectionandpolicyrouting
�Prioritymarking
�Trafcmirroring
�Trafcstatistics
CondentialandProprietaryInformationofZTECORPORATION91