Zte ZXR10 5250-52TC - Page 101

Chapter5ServiceConguration
lTrafcClassication(TC)
lFlowratelimit
lFlowstatistics,countthepacketwiththespecialcoloronthebaseofowratelimit.
lFlowmapping,owredirection.
lSpeciedeldmodicationforspeciedpackets.
QoSincludesportQoS,globalQoSandow-basedQoS.
ForthedatapacketQoShandlingmethodonthenetworkedgedeviceontheaccessside,
therearethefollowingconditions:
lTheswitchcanselectwhethertotrustthepacketandwhicheldofthepacket,such
asUPorDSCP,canbetrustedwhenreceivingthepacket.ItallocatestheQoSservice
accordingtotrustedelds.
lWhenthedatapacketreceivedbytheswitchisnottrusted,theQoSserviceis
allocatedaccordingtotherelatedQoScongurationonthereceivingport.
lQoSservicedenestheinternalprocessingmethodandexternalprocessingmethod
ofthepacket.TheinternalprocessingmethodincludesTC,andtheexternal
processingmethodincludesmodifyingthe802.1puserpriorityofadatapacketor
theDSCPdomainofanIPheader.
Forthefollowingnetworkcoredevice,implementtheservicesimilartothepreviousservice
accordingto802.1pofthepacketorDSCPmark.Thisway,asetofend-to-endQoS
serviceisprovided.Whentheowexceedstheconguration,thenetworkdevicecan
modifytheQoSservicelevelsuchasdroppingpacketsorallocatingthelower-levelQoS
service.
Whenadatapacketenterstheport,theswitchwillperformtheQoSinitializationmark
whichmainlyincludestheinitializationofTCQoSparameters.
Inthedirectionofswitchegress,theQoSisusedtoputthepacketintothesuitablequeue
accordingtomarkedTCandperformthecorrespondingqueueschedulingalgorithmand
congestioncontrolalgorithmaccordingtothecurrentqueuecongurationandmodifyit
accordingto802.1puserpriorityorIPDSCPeldofthedatapacket.
ConguringQoS
TheQoScongurationsontheZXR105250includesglobal-basedQoScongurationand
port-basedQoSconguration.PartofQoScongurationisrelatedtoACL.TheQoS
congurationincludesthefollowingcommands:
CommandFunction
zte(cfg)#setqospriority-mappingport<1-28>default-up<0-7>SetsthedefaultportUPpriority.
zte(cfg)#setqospriority-mappingport<1-28>trust-mode
{dscp-priority|port-profile|user-priority}
Setstheporttrustedmode.
zte(cfg)#setqospriority-mappingport<1-28>{remapping-dscp
|remark{dscp-priority|user-priority}}{enable|disable}
SetspacketUP/DSCP
remark/remappingbasedon
theport.
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