Specifications

Radio Interface
4-60 Advanced Configuration
–The802.11b/gradiochannelthattheaccesspointusestocommunicatewithwireless
clients.Whenmultipleaccesspointsaredeployedinthesamearea,setthechannelon
neighboringaccesspointsatleastfivechannelsaparttoavoidinterferencewitheach
other.Forexample,intheUnitedStatesyoucandeploy
uptothreeaccesspointsinthe
samearea(e.g.,channels1,6,11).Alsonotethatthechannelforwirelessclientsis
automaticallysettothesameasthatusedbytheaccesspointtowhichitislinked.Range:
1‐11;Default:6
• AutoChannelSelectenablesthe
accesspointtoautomaticallyselectanunoccupiedradio
channel.Default:Enabled
• WorkingMode(802.11b/gONLY).Theaccesspointcanbeconfiguredtosupportboth802.11b
and802.11gclientssimultaneously,802.11bclientsonly,or80 2.11gclientsonly.
Default:802.11band802.11g
• TransmitPoweradjuststhepoweroftheradiosignalstransmittedfrom
theaccesspoint.The
higherthetransmissionpower,thefartherthetransmissionrange.Powerselectionisnotjusta
tradeoffbetweencoverageareaandmaximumsupportedclients.Youalsohavetoensurethat
high‐powersignalsdonotinterferewiththeoperationofotherradiodevicesintheservice
area.(Options:100%,50%,25%,12.5%,minimum.)Default:100%
• AutoDataRateSelectletstheaccesspointcyclethroughvariousdataratesdu ringclient
associationandauthentication,dependingonthedistanceandRFneighborhood.Default:
Disabled.
• SoftwareRetryletstheaccesspointincreaseclientattemptsforassociationbasedondistance
andRFneighborhood,inconjunctionwiththebasehardwareretry.Default:Disabled.
• MaximumTxDataRateidentifiesthehighestdesiredtransmissionspeedforthebroadcast
trafficasforwardedbytheAPtothewirelessLAN.
– 802.11adefines6,9,12,18,24,36,48,54Mbpsdataratesinthe5
GHzband.
– 802.11bonlydefines:1,2,5.5,11Mbpsdataratesinthe2.4GHzband.
– 802.11gonlydefines:6,9,11,12,18,24,36,48,54Mbpsdatarates.
– 802.11band802.11gdefines:1,2,5.5,6,9,11,12,18,24,36,48, 54Mbpsdatarates.
• MulticastData
Ratesetsthespeedtosupportformu lticasttraffic.
Thefasterthetransmitspeed,theshorterthecoverageareaatthatspeed.Forexample,anAP
withan802.11b11Mbit/sRadioCardcancommunicatewithclientsuptoadistanceof
375feetinasemi‐openenvironment.However,only
clientswithinthefirst165feetcan
communicateat11Mbit/s.Clientsbetween165and230feetcommunicateat5.5Mbit/s.
Clientsbetween230and300feetcommunicateat2Mbit/s;andclientsbetween300to375feet
communicateat1Mbit/s.
• BeaconInterval(20‐1000)setstherateat
whichbeaconsignalsaretransmittedfromtheaccess
point.Thebeaconsignalsallowwirelessclientstomaintaincontactwiththeaccesspoint.
Theymayalsocarrypower‐managementinformation.Default:100Ms
• DataBeaconRate(1‐255)setstherateatwhichstationsinsleepmodemustwakeuptoreceive

broadcast/multicasttransmissions.
KnownalsoastheDeliveryTrafficIndicationMap(DTIM)interval,itindicateshowoftenthe
MAClayerforwardsbroadcast/multicasttraffic,whichisnecessarytowakeupstationsthat
areusingPowerSavemode.Thedefaultvalueof2indicatesthattheaccesspointwillsaveall
broadcast/multicastframes
fortheBasicServiceSet(BSS)andforwardthemafterevery
secondbeacon.UsingsmallerDTIMintervalsdeliversbroadcast/multicastframesinamore
timelymanner,causingstationsinPowerSavemodetowakeupmoreoftenanddrainpower