Specifications

Glossary-20
Protocol Independent Multicast protocol
SeePIM.
PseudoRandom Function
SeePRF.
PseudoRandom Number Generator
SeePRNG.
PSK
Presharedkey.TheIEEE802.11termforasharedsecret,alsoknownasasharedkey.Seesharedsecret.
PTK
Pairwisetransientkey.Avaluederivedfromapairwisemasterkey (PMK)andsplitintomultiple
encryptionkeysandmessageintegritycode(MIC)keysforusebyaclientandserverastemporal
sessionkeysforIEEE802.11irobustsecurity.Seealso802.11i.
public key
Incryptography,oneofapairofkeys,onepublicandoneprivate,thatarecreatedwiththesame
algorithmforencryptinganddecryptingmessagesanddigitalsignatures.Thepublickeyismade
publiclyavailableforencryptionanddecryption.SeealsoPKI;privatekey.
Public-Key Cryptography Standards
SeePKCS.
Public-Key Infrastructure
SeePKI.
PVST+
Per‐VLANSpanningTreeprotocol.AproprietaryCiscoprotocolthat supportsaseparateinstance
oftheSpanningTreeProtocol(STP)foreachvirtualLAN(VLAN)inanetworkandmapsthe
multiplespanningtreestoasingletree,tocomplywiththeIEEE802.1Qspecification.SeealsoSTP.
QoS
Qualityofservice.Anetworkingtechnologythatseekstomeasure,improve,andguarantee
transmissionrates,errorrates,andotherperformancecharacteristics,basedonpriorities,policies,
andreservationcriteriaarranged inadvance.Someprotocolsallowpacketsorstreamstoinclude
QoSrequirements.
Quality of Service
SeeQoS.
RA
SeeRegistrationAuthority(RA).
radio profile
Agroupofparameters,suchasthebeaconinterval,fragmentationthreshold,andsecuritypolicies,
thatyouconfigureincommonacrossasetofradiosinoneormoreAccessPoints(APs).Afew
parameters,suchastheradionameandchannelnumber,mustbesetseparatelyforeachradio.