Specifications

RoamAbout Mobility System Software Configuration Guide 7-1
7
Configuring and Managing
Mobility Domain Roaming
AMobilityDomainisasystemofRoamAboutSwitchesandAccessPoints(APs)workingtogether
tosupportroamingwirelessusers(clients).TunnelsandvirtualportsbetweentheRoamAbout
switchesinaMobilityDomainallowuserstoroamwithoutanydisruptiontonetwork
connectivity.
(IfyourMobilityDomainusesfirewallsoraccess
controlsbetweenRoamAboutswitchesorAAA
servers,seeAppendix D,”TrafficPortsUsedbyMSS”fortheportstypicallyusedinaMobility
Domain.)
About the Mobility Domain Feature
AMobilityDomainenablesuserstoroamg eographicallyacrossthesystemwhilemaintaining
theirdatasessionsandVLANorsubnetmembership,includingIPaddress,regardlessofhowthe
RoamAboutswitchesareattachedtothenetworkbackbone.Asusersmovefromoneareaofa
buildingorcampustoanother,theirassociation
withserversorotherresourcesappearsthesame.
WhenusersaccessaRoamAboutSwitchinaMobilityDomain,theybecomemembersofthe
VLANdesignatedthroughtheirauthorizedidentity.Ifauser’snativeVLANisnotpresentonthe
RoamAboutSwitchthatheorsheaccesses,theaccessedRoamAboutSwitch
formsatunneltoa
RoamAboutSwitchintheMobilityDomainthatincludesthenativeVLAN.
InaMobilityDomain,oneRoamAboutSwitchactsasaseeddevice,whichdistri butesinformation
totheRoamAboutswitchesdefinedintheMobilityDomain.Otherwise,theseedRoamAbout
SwitchoperateslikeanyotherMobilityDomain
member.
For information about... Refer to page...
About the Mobility Domain Feature 7-1
Configuring a Mobility Domain 7-2
Monitoring the VLANs and Tunnels in a Mobility Domain 7-5
Understanding the Sessions of Roaming Users 7-8
Mobility Domain Scenario 7-10
Note: Enterasys Networks recommends that you run the same MSS version on all the RoamAbout
switches
in a Mobility Domain.