Specifications

Glossary-17
MTU
Maximumtransmissionunit.Thesizeof thelargestpacketthatcanbetransmittedoveraparticular
medium.PacketsexceedingtheMTUvalueinsizearefragmentedorsegmented,andthen
reassembledatthereceivingend.Iffragmentationisnotsupportedorpossible,apacketthat
exceedstheMTUvalueisdropped.
NAT
Networkaddresstranslation.Thecapability,defi nedinRFC 3022,ofusingonesetofreusableIP
addressesforinternaltrafficonaLAN,andasecondsetofgloballyuniqueIPaddressesforexternal
traffic.
Network Address Translation
SeeNAT.
network plan
Adesignfornetworkdeploymentandsettingsfornetworkconfiguration,storedintheEnterasys
NetworksMobilitySystemRoamAboutSwitchManagertoolsuite.
nonvolatile storage
Awayofstoringimagesandconfigurationssothattheyaremaintainedinaunit’smemory
whetherpowertotheunitisonoroff.
Odyssey
An802.1XsecurityandaccesscontrolapplicationforwirelessLANs(WLANs),developedbyFunk
Software,Inc.
OFDM
Orthogonalfrequencydivisionmultiplexing.Amodulationtechniquethatsendsdataacrossa
numberofnarrowsubcarrierswithinaspecifiedfrequencyband.Thewirelessnetworking
standardsIEEE802.11aandIEEE802.11garebasedonOFDM.
Orthogonal Frequency Division Multiplexing
SeeOFDM.
Pairwise Master Key
SeePMK.
Pairwise Transient Key
SeePTK.
PAT
Portaddresstranslation.Atypeofnetworkaddresstranslation(NAT)inwhicheachcomputeron
aLANisassignedthesameIPaddress,butadifferentportnumber.SeealsoNAT.
PEAP
ProtectedExtensibleAuthenticationProtocol.AdraftextensiontotheExtensibleAuthentication
ProtocolwithTransportLayerSecurity(EAP‐TLS),developedbyMicrosoftCorporation,Cisco
Systems,andRSADataSecurity,Inc.TLSisusedinPEAPPart 1toauthenticatetheserveronly,
andthusavoidshaving todistributeusercertificatestoeveryclient.
PEAPPart 2performsmutual
authenticationbetweentheEAPclientandtheserver.CompareEAP‐TLS .