Specifications

Glossary-1
Glossary
3DES
Athree‐roundapplicationoftheDataEncryptionStandard(DES)thatusesa168‐bitencryption
key.SeealsoDES.
802.1D
TheIEEELANspecificationfortheoperationofmediaaccesscontrol(MAC)bridges.
802.1p
AnIEEELANstandardmethodforclassifyingpacketsinbridgedvirtualLANs(VLANs).Aspart
of802.1Qprotocol,802.1pdefinesafieldintheVLANtagofaframeheaderthatprovides
class‐of‐service(CoS)definitionsatLayer 2.Seealso802.1Q.
802.1Q
TheIEEELANstandardthatdefinesaprotocolforfilteringandforwardingservicesatLayer 2.
Ethernetframesaredirectedbymeansofataginsertedintotheframe header.AvirtualLAN
(VLAN)identifier(VID)fieldinthetagidentifiestheVLANwithwhichtheframeisassociated.
802.1X
TheprimaryIEEEstandardforport‐basednetworkaccesscontrol.The802.1Xstandard,whichis
basedontheExtensibleAuthenticationProtocol(EAP),providesanauthenticationframeworkthat
supportsavarietyofmethodsforauthenticatingandauthorizing networkaccessforwiredor
wirelessusers.SeealsoEAP;EAP‐TLS;PEAP;
TLS;TTLS.
802.2
AnIEEELANspecificationthatdefinesthelogicallinkcontrol(LLC)sublayer,theupperportion
oftheDataLinklayer.LLCencapsulationcanbeusedbyanylower‐layerLANtechnology.
Compare802.3;EthernetII.
802.3
AnIEEELANspecificationforaCarrierSenseMultipleAccesswithCollisionDetection(CSMA‐
CD)network,atypeofnetworkrelatedtoEthernet.Ingeneral,802.3specifiesthephysicalmedia
andtheworkingcharacteristicsofLANs.An802.3frameusessou rceanddestination mediaaccess
control(MAC)addressestoidentifyits
originatorandreceiver(orreceivers).Compare802.2;
EthernetII.
802.3z
AnextensiontotheIEEE802.3LANspecification,describinggigabitEthernet(1000 Mbps)
transmission.Theextensionincludesspecificationsforthemediaaccesscontrol(MAC),physical
layer,repeater,andmanagementcharacteristicsofgigabitEthernet.
802.11
AnIEEELANspecificationthatdefinesthemobile(wireless)networkaccesslinklayer.The
specificationincludesthe802.11mediaaccesscontrol(MAC)sublayeroftheDataLinklayer,and
twosublayersof thePhysical(PHY)layer—afrequency‐hoppingspread‐spectrum(FHSS)physical
layerandadirect‐sequencespread‐spectrum(DSSS)link
layer.Lateradditionsto802.11include
additionalphysicallayers.Seealso802.11a;802.11b;802.11g;802.11i.