Enterasys RoamAbout 3000 Guida Utente Pagina 147

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Plan RF Coverage
RoamAbout Switch Manager User’s Guide 6-25
Assign Channel Settings
AfteridentifyingtheRoamAboutSwitchesrequiredforacoveragearea,youneedtoassign
channelstotheRoamAboutSwitches.Appropriateassignmentofchannelsacrossthefloor
minimizescochannelinterference.Thechannelassignmentalgorithmassignsnonoverlapping
channelstoneighboringAPsfromtheselectedchannelset.Choosethestartingfloorand
the
endingfloor(inthedownwarddirection)formultifloorchannelassignment.Thealgorithmtakes
predictedRSSIvaluesbetweenneighboringAPs(includingAPsondifferentfloorsand3rdparty
APs)andminimizessamechannelassignmentsbetweenAPs.Youcanspecifycrossfloor
attenuationandthe802.11technologyonwhichyou
wanttoperformthechannelassignment.
RASMusespredictedRSSIvaluesfortheimaginary“ray”thatisdrawnbetweentwoAPs.
Consequently,youmay seeunexpectedresultsiftheexactpathbetweentheAPshasmany
obstacles,buttheareasaroundthatpatharerelativelyopen.Youcanmakefurthermanual
adjustments,ifnecessary.
Toassignchannels:
1. DisplaythefloorplanintheContentpanel.
2. IntheTaskListpanel,clickRFPlanning.
3. UnderRFPlanning,clickAssignChannels.TheChannelAssignmentwizardappears,
showingthecurrentchannelassignmentconstraints.
4. Tochangethestartingfloorforchannelassignment,selectthefloorfromthe
BeginOnFloor
List.Bydefault,RASMstartsatthetopfloorandworksdown.
5. Tochangetheendingfloorforchannelassignment,selectthefloorfromtheEndOnFloorList.
Theendingfloornumbermustbelowerthanorequaltothestartingfloornumber.
6. Tochangetheradio
typeforwhichtoassignchannels,selecttheradiotypefromthe
Technologylist.Bydefault,RASMassignschannelsforallradiotypesontheRoamAbout
Switchesplacedinthebuilding.
7. TopreventRASMfromtakingthechannelassignmentsfortheflooraboveintoaccountwhen
calculatingthechannelassignmentsfor
afloor,clearUseCrossFloorChannelInformation.
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