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A P P E N D I XCAcronymsTable C-1 defines the acronyms used in this publication.Table C-1List of AcronymsAcronymExpansionAALATM adaptation layerACEaccess control entryACLaccess control listAFIauthority and format identifierAgportaggregation portALPSAirline Protocol SupportAMPActive Monitor PresentAPaRTAutomated Packet Recognition and TranslationARPAddress Resolution ProtocolATAAnalog Telephone AdaptorATMAsynchronous Transfer ModeAVattribute valueBDDbinary decision diagramsBECNbackward explicit congestion notificationBGPBorder Gateway ProtocolBPDUbridge protocol data unitBRFbridge relay functionBSCBisyncBSTUNBlock Serial TunnelBUSbroadcast and unknown serverBVIbridge-group virtual interfaceCAMcontent-addressable memoryCARcommitted access rateCCAcircuit card assemblyCDPCisco Discovery ProtocolCisco IOS Software Configuration Guide, Release 12.2SXOL-13013-06C-1

Appendix CTable C-1AcronymsList of Acronyms (continued)AcronymExpansionCEFCisco Express ForwardingCHAPChallenge Handshake Authentication ProtocolCIRcommitted information rateCISTCommon and internal spanning treeCLIcommand-line interfaceCLNSConnection-Less Network ServiceCMNSConnection-Mode Network ServiceCOPSCommon Open Policy ServerCOPS-DSCommon Open Policy Server Differentiated ServicesCoSclass of serviceCPLDComplex Programmable Logic DeviceCRCcyclic redundancy checkCRFconcentrator relay functionCSTCommon Spanning TreeCUDDUniversity of Colorado Decision DiagramDCCData Country CodedCEFdistributed Cisco Express ForwardingDDRdial-on-demand routingDEdiscard eligibilityDECDigital Equipment CorporationDFCDistributed Forwarding CardDFIDomain-Specific Part Format IdentifierDFPDynamic Feedback ProtocolDISLDynamic Inter-Switch LinkDLCData Link ControlDLSwData Link SwitchingDMPdata movement processorDNSDomain Name SystemDoDDepartment of DefenseDOSdenial of servicedot1q802.1QDRAMdynamic RAMDRiPDual Ring ProtocolDSAPdestination service access pointDSCPdifferentiated services code pointDSPUdownstream SNA Physical UnitsCisco IOS Software Configuration Guide, Release 12.2SXC-2OL-13013-06

Appendix CAcronymsTable C-1List of Acronyms (continued)AcronymExpansionDTPDynamic Trunking ProtocolDTRdata terminal readyDWRRdeficit weighted round robinDXIdata exchange interfaceEAPExtensible Authentication ProtocolEARLEnhanced Address Recognition LogicEEPROMelectrically erasable programmable read-only memoryEHSAenhanced high system availabilityEIAElectronic Industries AssociationELANEmulated Local Area NetworkEOBCEthernet out-of-band channelEOFend of fileESIend-system identifierFATFile Allocation TableFECNforward explicit congestion notificationFMfeature managerFRUfield replaceable unitfsckfile system consistency checkFSMfeasible successor metricsGARPGeneral Attribute Registration ProtocolGMRPGARP Multicast Registration ProtocolGVRPGARP VLAN Registration ProtocolHSRPHot Standby Routing ProtocolICCInter-card CommunicationICDInternational Code DesignatorICMPInternet Control Message ProtocolIDBinterface descriptor blockIDPinitial domain part or Internet Datagram ProtocolIDSMIntrusion Detection System ModuleIFSIOS File SystemIGMPInternet Group Management ProtocolIGRPInterior Gateway Routing ProtocolILMIIntegrated Local Management InterfaceIPInternet ProtocolIPCinterprocessor communicationIPXInternetwork Packet ExchangeCisco IOS Software Configuration Guide, Release 12.2SXOL-13013-06C-3

Appendix CTable C-1AcronymsList of Acronyms (continued)AcronymExpansionIS-ISIntermediate System-to-Intermediate System Intradomain RoutingProtocolISLInter-Switch LinkISOInternational Organization of StandardizationISRIntegrated SONET routerISTInternal spanning treeLANlocal area networkLANELAN EmulationLAPBLink Access Procedure, BalancedLCPLink Control ProtocolLDALocal Director AccelerationLECLAN Emulation ClientLECSLAN Emulation Configuration ServerLEMlink error monitorLERlink error rateLESLAN Emulation ServerLLCLogical Link ControlLTLLocal Target LogicMACMedia Access ControlMD5Message Digest 5MDSmulticast distributed switchingMDTmulticast distribution treeMECmultichassis EtherChannelMFDmulticast fast dropMIBManagement Information BaseMIImedia-independent interfaceMLDMulticast Listener DiscoveryMLSMultilayer SwitchingMLSEmaintenance loop signaling entityMLSEmaintenance loops signaling entityMOPMaintenance Operation ProtocolMOTDmessage-of-the-dayMRMmulticast routing monitorMSDPMulticast Source Discovery ProtocolMSFCMultilayer Switch Feature CardMSFCMultilayer Switching Feature CardCisco IOS Software Configuration Guide, Release 12.2SXC-4OL-13013-06

Appendix CAcronymsTable C-1List of Acronyms (continued)AcronymExpansionMSMMultilayer Switch ModuleMSTmultiple spanning treeMTImulticast tunnel interfaceMTUmaximum transmission unitMVAPmultiple VLAN access portMVPNmulticast virtual private networkMVRmulitcast VLAN registrationMVRFmulticast VRFNACNetwork Admission ControlNAMNetwork Analysis ModuleNBARNetwork-Based Application RecognitionNBPName Binding ProtocolNCIANative Client Interface ArchitectureNDENetFlow Data ExportNETnetwork entity titleNetBIOSNetwork Basic Input/Output SystemNFFCNetFlow Feature CardNMPNetwork Management ProcessorNSAPnetwork service access pointNSFNonstop ForwardingNTPNetwork Time ProtocolNVRAMnonvolatile RAMOAMOperation, Administration, and MaintenanceODMorder dependent mergeOSIOpen System InterconnectionOSMOptical Services ModuleOSPFopen shortest path firstPACLport access control listPAEport access entityPAgPPort Aggregation ProtocolPBDpacket buffer daughterboardPCPersonal Computer (formerly PCMCIA)PCMpulse code modulationPCRpeak cell ratePDPpolicy decision pointPDUprotocol data unitCisco IOS Software Configuration Guide, Release 12.2SXOL-13013-06C-5

Appendix CTable C-1AcronymsList of Acronyms (continued)AcronymExpansionPEPpolicy enforcement pointPFCPolicy Feature CardPGMPragmatic General MulticastPHYphysical sublayerPIBpolicy information basePIMprotocol independent multicastPPPPoint-to-Point ProtocolPRIDPolicy Rule IdentifiersPVIDPort VLAN identifierPVST Per VLAN Spanning Tree QDMQoS device managerQMQoS managerQoSquality of serviceRACLrouter interface access control listRADIUSRemote Access Dial-In User ServiceRAMrandom-access memoryRCPRemote Copy ProtocolRGMPRouter-Ports Group Management ProtocolRIBrouting information baseRIFRouting Information FieldRMONremote network monitorROMread-only memoryROMMONROM monitorRProute processor or rendezvous pointRPCremote procedure callRPFreverse path forwardingRPRroute processor redundancyRPR route processor redundancy plusRSPANremote SPANRSTresetRSVPReSerVation ProtocolSAIDSecurity Association IdentifierSAPservice access pointSCMservice connection managerSCPSwitch-Module Configuration ProtocolSDLCSynchronous Data Link ControlCisco IOS Software Configuration Guide, Release 12.2SXC-6OL-13013-06

Appendix CAcronymsTable C-1List of Acronyms (continued)AcronymExpansionSDMSecure Device ManagerSEASystem Event ArchiveSGBPStack Group Bidding ProtocolSIMMsingle in-line memory moduleSLBserver load balancingSLCPSupervisor Line-Card ProcessorSLIPSerial Line Internet ProtocolSMDSSoftware Management and Delivery SystemsSMFsoftware MAC filterSMPStandby Monitor PresentSMRPSimple Multicast Routing ProtocolSMTStation ManagementSNAPSubnetwork Access ProtocolSNMPSimple Network Management ProtocolSPANSwitched Port AnalyzerSRECS-Record format, Motorola defined format for ROM contentsSRMsingle router modeSRRshaped round robinSSMsource-specific multicastSSOstateful switchoverSSTPCisco Shared Spanning TreeSTPSpanning Tree ProtocolSVCswitched virtual circuitSVIswitched virtual interfaceTACACS Terminal Access Controller Access Control System PlusTARPTarget Identifier Address Resolution ProtocolTCAMTernary Content Addressable MemoryTCLtable contention levelTCP/IPTransmission Control Protocol/Internet ProtocolTFTPTrivial File Transfer ProtocolTIATelecommunications Industry AssociationTLVtype-length-valueTopNUtility that allows the user to analyze port traffic by reportsTOStype of serviceTTLTime To LiveTVXvalid transmissionCisco IOS Software Configuration Guide, Release 12.2SXOL-13013-06C-7

Appendix CTable C-1AcronymsList of Acronyms (continued)AcronymExpansionUDLDUniDirectional Link Detection ProtocolUDPUser Datagram ProtocolUNIUser-Network InterfaceURDURL Rendezvous DirectoryUTCCoordinated Universal TimeUUFBunknown unicast flood blockingUUFRLunknown unicast flood rate limitingVACLVLAN access control listVCCvirtual channel circuitVCIvirtual circuit identifierVCRVirtual Configuration RegisterVINESVirtual Network SystemVLANvirtual LANVMPSVLAN Membership Policy ServerVPNvirtual private networkVRFVPN routing and forwardingVTPVLAN Trunking ProtocolVVIDvoice VLAN IDWANwide area networkWCCPWeb Cache Communications ProtocolWFQweighted fair queueingWoLwake-on LANWREDweighted random early detectionWRRweighted round-robinXNSXerox Network SystemCisco IOS Software Configuration Guide, Release 12.2SXC-8OL-13013-06

BPDU bridge protocol data unit BRF bridge relay function BSC Bisync BSTUN Block Serial Tunnel BUS broadcast and unknown server . SDLC Synchronous Data Link Control Table C-1 List of Acronyms (continued) Acronym Expansion. C-7 Cisco IOS Software Configuration Guide, Release 12.2SX OL-13013-06 Appendix C Acronyms