D-Link DWS-4026 [587/741] Distributed tunneling configuration

ConfiguringAdvancedSettings

D-Link UnifiedWiredandWirelessAccessSystem

November2011 Page587

D‐LinkUWSUserManual

DistributedTunnelingConfiguration

TheDistributedTunnelingmode,alsoknownasAP‐APtunnelingmode,isusedtosupportL3roamingfor

wirelessclientswithoutforwardinganydatatraffictothewirelessswitch.

IntheAP‐APtunnelingmode,whenaclientfir stassociateswithanAPinthewirelesssystemtheAPforwards

itsda

tausingtheVLANforwardingmode.TheAPtowhichtheclientinitiallyassociatesistheHomeAP.TheAP

towhichtheclientroamsistheAssociationAP.

WhenaclientroamstoanotherAPinadifferentsubnettheAssociationAPtunnelsalltrafficfromtheclientto

theHomeAPusingaCAP

WAPL2tunnel.TheHomeAPinjectsthetrafficreceivedoverthetunnelintothewired

network.IfaclientroamstoanotherAPinthesamesubnetthenthetunnelisnotcreated,andthenewAP

becomestheHomeAPfortheclient.

Figure38

2:DistributedTunnelingConfiguration

Table348showsthefieldsontheDistributedTunnelingConfigurationpage.

CommandButtons

Thepageincludesthefollowingbuttons:

• Submit—Updatestheswitchwiththevaluesyouenter.Toretainthenewvaluesacrossapowercycle,you

mustperformasave(Tool>SaveChanges).

• Refresh—Updatesthepa

gewiththelatestinformation.

Table348:DistributedTunnelingConfiguration

Field Description

DistributedTunnelClients Specifythemaximumnumberofdistributedtunnelingclientsthatcan

roamawayfromtheHomeAPatthesametime.

DistributedTunnelIdleTimeout Specifythenumberofsecondsofnoactivitybytheclientbeforethe

tunneltothatclientisterminatedandtheclientisforcedtocha

ngeits

IPaddress.

DistributedTunnelTimeout Specifythenumberofsecondsbeforethetunneltotheroamedclient

isterminatedandtheclientisforcedtochangeitsIPaddress.

DistributedTunnelMaxMulticast

ReplicationsAllowed

Specifythemaximumnumberoftunnelstowhichamulticastframeis

copiedontheHomeAP

.