Enterasys RoamAbout RBT-4102 - Using the CLI to Configure WMM

Radio Interface
RoamAbout RBT-4102 Wireless Access Point Configuration Guide 4-67
– Support:WMMwillbeusedforanyassociateddevicethatsupportsthisfeature.Devices
thatdonotsupportthisfeaturemaystillassociatewiththeaccesspoint.
– Required:WMMmustbesupportedonanydevicetryingtoassociatedwiththeaccess
point.Devicesthatdonotsupportthisfeature
willnotbeallowedtoassociatewiththe
accesspoint.
• WMMBSSParameters–Theseparametersapplytothewirelessclients.
• WMMAPParameters–Theseparametersapplytotheaccesspoint.
– logCWMin(MinimumContentionWindow)–Theinitialupperlimitoftherandom
backoffwaittimebeforewirelessmediumaccess
canbeattempted.Theinitialwaittimeis
arandomvaluebetweenzeroandtheCWMinvalue.SpecifytheCWMinvalueinthe
range1‐15microseconds.NotethattheCWMinvaluemustbeequalorlessthanthe
CWMaxvalue.
– logCWMax(MaximumContentionWindow)–Themaximumupperlimit
oftherandom
backoffwaittimebeforewirelessmediumaccesscanbeattempted.Thecontention
windowisdoubledaftereachdetectedcollisionuptotheCWMaxvalue.Specifythe
CWMaxvalueintherange1‐15microseconds.NotethattheCWMaxvaluemustbe
greaterorequaltotheCWMinvalue.

– AIFS(ArbitrationInter‐FrameSpace)–Theminimumamountofwaittimebeforethenext
datatransmissionattempt.SpecifytheAIFSvalueintherange1‐15 microseconds.
– TXOPLimit(TransmitOpportunityLimit)–ThemaximumtimeanACtransmitqueue
hasaccesstothewirelessmedium.WhenanAC
queueisgrantedatransmitopportunity,
itcantransmitdataforatimeuptotheTxOpLimit.Thisdataburstinggreatlyimproves
theefficiencyforhighdata‐ratetraffic.Specifyavalueintherange0‐65535microseconds.
– AdmissionControl–Theadmissioncontrolmodefortheaccesscategory.Whenenabled,

clientsareblockedfromusingtheaccesscategory.(Default:Disabled)
Using the CLI to Configure WMM
Entertheinterfacewirelessmode,andtypewmmrequiredforclientsthatwanttoassociatewith
theaccesspoint.Thewmm‐acknowledge‐policycommandisusedtoenableordisablethe
acknowledgepolicyforeachaccesscategory. ThewmmparmscommanddefinesdetailedWMM
parameters.
Examples
RoamAbout 4102(if-wireless a)#wmm required
RoamAbout 4102(if-wireless a)#wmm-acknowledge-policy 0 noack
RoamAbout 4102(if-wireless a)#wmmparams ap 0 4 6 3 1 1
Toviewthe current802.11aradiosettingsfortheVAPinterface,usethe
showinterfacewirelessa0command.
RoamAbout 4102#show interface wireless a 0
Wireless Interface Information
=============================================================
--------------------Identification---------------------------
Description : "RD-AP4102"
SSID : r&d
Turbo Mode : DISABLED
Channel : 36 (AUTO)
Status : DISABLED