D-Link DWL-3600AP - Creating a DiffServ Class Map

CreatingaDiffServClassMap
D-Link UnifiedAccessPointAdministrator’sGuide
November2011 Page138
UnifiedAccessPointAdministrator’sGuide
CreatingaDiffSer vClassMap
TheClientQoSfeaturecontainsDifferentiatedServices(DiffServ)supportthatallowstraffictobeclassifiedinto
streamsandgivencertainQoStreatmentinaccordancewithdefinedper‐hopbehaviors.
StandardIP‐basednetworksaredesignedtoprovidebesteffortdatadeliveryservice.Besteffortserviceimplies
thatthenetworkdeliversthe
datainatimelyfashion,althoughthereisnoguaranteethatitwill.Duringtimes
ofcongestion,packetsmaybedelayed,sentsporadically,ordropped.FortypicalInternetapplications,suchas
e‐mailandfiletransfer,aslightdegradationinserviceisacceptableandinmanycasesunnoticeable.However,
onapplications
withstricttimingrequirements,suchasvoiceormultimedia,anydegr adationofservicehas
undesirableeffects.
Byclassifyingthetrafficandcreatingpoliciesthatdefinehowtohandlethesetrafficclasses,youcanmakesure
thattime‐sensitivetrafficisgivenprecedenceoverothertraffic.
TheUAPsupportsupto50
ClassMaps.
DefiningDiffServ
TouseDiffServforClientQoS,usetheClassMapandPolicyMappagestodefinethefollowingcategoriesand
theircriteria:
•Class:createclassesanddefineclasscriteria
•Policy:createpolicies,associateclasseswithpolicies,anddefinepolicystatements
Onceyoudefinetheclassandassociateitwithapolicy,
applythepolicytoaspecifiedVAPontheVAPQoS
Parameterspage.
Packetsareclassifiedandprocessedbasedondefinedcriteria.Theclassificationcriteriaisdefinedbyaclass.
Theprocessingisdefinedbyapolicy'sattributes.Policyattributesmaybedefinedonaper‐classinstancebasis,
andit
istheseattributesthatareappliedwhenamatchoccurs.Apolicycancontainmultipleclasses.Whenthe
policyisactive,theactionstakendependonwhichclassmatchesthepacket.
Packetprocessingbeginsbytestingtheclassmatchcriteriaforapacket.Apolicyisappliedtoapacketwhen
a
classmatchwithinthatpolicyisfound.DiffServissupportedforIPv4andIPv6packets.
UsetheClassMappagetoaddanewDiffservclassname ,ortorenameordeleteanexistingclass,anddefine
thecriteriatoassociatewiththeDiffServclass.
ToconfigureaDiffServClassMap,
clicktheClassMaptab.
Note:TheClassMappagedisplaystheMatchCriteriaConfigurationfieldsonlyifaClassMaphasbeen
created.TocreateaClassMap,enteranameintheClassMapNamefieldandclickAddClassMap.