Specifications

AP Overview
RoamAbout Mobility System Software Configuration Guide 9-3
Country of Operation
BeforeyoucanconfigureAPsandradioparameters,youmustspecifythecountryinwhichyou
plantooperatetheradios.Sinceeachcountryhasdifferentregulatoryenvironments,thecountry
codedeterminesthetransmitpowerlevelsandchannelsyoucanconfigureontheradios.MSS
ensuresthatthevaluesyoucan
configurearevalidforthecountryyouspecify.
Distributed APs
ToconfiguretheRoamAboutSwitchtosupportanaccesspoint,youmustindirectlyconnecttothe
switch.
AnAPthatisnotdirectlyconnectedtoaRoamAboutSwitchisconsideredaDistributedAP
(DAP).TheremaybeintermediateLayer2switchesorLayer3IProutersbetweentheRoamAbout
Switchand
AP.TheRoamAboutSwitchmaycommunicatetotheDistributedAPthroughany
networkport.(Anetworkportisanyportconnectingtheswitchtoothernetworkingdevices,such
asswitchesandrouters,anditcanalsobeconfiguredfor802.1QVLANtagging.)TheRoamAbout
Switchcontainsaconfigurationfora
DistributedAPbasedontheDistributedAP’sserialnumber.
DistributedAPconfigurationsarenumberedandcanreferenceaparticularAP.Thesenumbered
configurationsdonot,however,referenceanyphysicalport.
Distributed AP Network Requirements
DistributedAPsrequireadditionalsupportfromthenetworktofunctionbecausetheyarenot
directlyattachedtoaRoamAboutSwitch.Informationonthebootingandoperationsequencefor
DistributedAPsiscoveredinthesection“BootProcessforAPs”onpage 9‐6.
• Power—PoEmustbeprovidedononeofthe
EthernetconnectionstotheAP.Besuretousea
PoEinjectiondevicethathasbeentestedbyEnterasysNetworks.(ContactEnterasys
Networksforinformation.)ProvidingPoEonbothoftheEthernetconnections(onmodels
thathavetwoEthernetports)allowsredundantPoE.
•DHCP—Bydefault,aDistributedAPusesTCP/IPfor
communication,andreliesonDHCPto
obtainIPparameters.Therefore,DHCPservicesmustbeava ilableonthesubnetthattheAPis
connectedto.DHCPmustprovidethefollowingparameterstotheAP:
–IPaddress
– Domainname
–DNSserveraddress
–Defaultrouter(gateway)address
•StaticIPconfiguration—IfDHCPisnotavailableinthe
network,aDistributedAPcanbe
configuredwithstaticIPinformationthatspecifiesitsIPaddress,aswellastheRoamAbout
Switchusesasitsbootdevice.
• DNS—IftheintermediatenetworkbetweentheRoamAboutSwitchandDistributedAP
includesoneormoreIProuters,createawlan‐switch.mynetwork.comentryon
theDNSserver.
Theentryneedstomaponeofthesenamestothesy stemIPaddressoftheswitch.Ifthe
subnetcontainsmorethanoneRoamAboutSwitchinthesameMobilityDomain,youcanuse
thesystemIPaddressofanyoftheswitches.(Forredundancy,youcan
createmorethanone
DNSentry,andmapeachentrytoadifferentRoamAboutSwitchinthesubnet.)