H3C Network Technology Acronyms

H3C network technology acronyms

# A B C D E F G H I K L M N O P Q R S T U V W X Z

10GE Ten-GigabitEthernet

1DM One-way Delay Measurement 3DES Triple Data Encryption Standard

6PE IPv6 Provider Edge

A Return

AAA Authentication, Authorization and Accounting AAL ATM Adaptation Layer AAL5 ATM Adaptation Layer 5 ABR Area Border Router AC Attachment Circuit AC Access Controller AC Access Category AC Name Access Controller Name ACA Acquire Change Authorization ACCM Async-Control-Character-Map ACFC Address-and-Control-Field-Compression ACFP Application Control Forwarding Protocol Ack Acknowledgment ACL Access Control List ACR Adaptive Clock Recovery ACS Auto-Configuration Server ACS AS Control Server ACSEI ACFP Client and Server Exchange Information AD Active Directory ADM ATM Direct Mapping ADPCM Adaptive Differential Pulse Code Modulation ADSL Asymmetric Digital Subscriber Line ADVPN Auto Discovery Virtual Private Network AER AS Edge Router AES Advanced Encryption Standard AF Assured Forwarding AFI Address Family Identifier

1 AFI Authority and Format Identifier AFT Address Family Translation AFTR Address Family Transition Router AH Authentication Header AIFSN Arbitration Inter Frame Spacing Number AIS Alarm Indication Signal AIW APPN Implementers Workshop AKM Authentication and Key Management ALG Application Level Gateway AM Analog Modem AMB Active Main Board AMI Alternate Mark Inversion A-MPDU Aggregate MAC Protocol Data Unit A-MSDU Aggregate MAC Service Data Unit ANCP Access Node Control Protocol ANI Adaptive Noise Immunity ANSI American National Standards Institute AP Access Point AP Agreement Protocol APD Avalanche Photo Diode APDB Access Point Information Database APP Application Protocol APPN Advanced Peer-to-Peer Networking ARP Address Resolution Protocol ARQ Automatic Repeat Request AS Autonomous System ASBR Autonomous System Boundary Router ASM Any-Source Multicast ASPF Application Specific Packet Filter ASPF Advanced Stateful Packet Filter AT AppleTalk ATD Attribute Discovery ATM Asynchronous Transfer Mode AU Administration Unit AUG Administration Unit Group AU-PTR Administration Unit Pointer AVF Active Virtual Forwarder AVF Appointed VLAN-x Forwarder

2 AVP Attribute Value Pair

B Return

B4 Basic Bridging BroadBand B8ZS Bipolar 8-zero substitution BA Block Acknowledgment BAS Broadband Access Server BB_Credit Buffer-to-Buffer Credit BC Bandwidth Constraint BC Boundary Clock BCB Backbone Core Bridge BDI Backward Defect Indication BDR Backup Designated Router BE Best Effort BEB Backbone Edge Bridge BECN Backward Explicit Congestion Notification BF Build Fabric BFD Bidirectional Forwarding Detection BGP Border Gateway Protocol BIDIR-PIM Bidirectional Protocol Independent Multicast BIMS Branch Intelligent Management System BIP Broadcast Integrity Protocol BIP Bit-Interleaved Parity BITS Building Integrated Timing Supply System B-MAC Backbone MAC BMC Best Master Clock BOOTP Bootstrap Protocol BPDU Bridge Protocol Data Unit BQ Bandwidth Queuing BRAS Broadband Remote Access Server BRI Basic Rate Interface BRPC Backward-Recursive PCE-Based Computation BSB Blockade State Block BSM Bootstrap Message BSMF Bootstrap Message Fragment BSR Bootstrap Router BSS Basic Service Set BSV BRI S/T Voice BT BitTorrent

3 B-VLAN Backbone VLAN

C Return

CA Certificate Authority CA Connectivity Association CAC Connect Admission Control CAMS Comprehensive Access Management Server CAPWAP Controlling and Provisioning of Wireless Access Point CAR Committed Access Rate CB Customer Bridge CBQ Class Based Queuing CBR Constant Bit Rate CBS Committed Burst Size C-BSR Candidate-BSR CBT Core-Based Tree CBWFQ Class Based Weighted Fair Queuing CC Control Channel CC Call Control CC Continuity Check CC Common Criteria CCA Clear Channel Assessment CCC Circuit Cross Connect CCM Continuity Check Message C-DCC Circular DCC CDCP S-Channel Discovery and Configuration Protocol CDP Cisco Discovery Protocol CDR Call Detail Record CDV Cell Delay Variation CE Customer Edge CED Called Station Identifier CEDCNG Called Station Identifier CEE Converged Enhanced Ethernet CEM Circuit Emulation CEM Class Circuit Emulation Class CESoPSN Circuit Emulation Services over PSN CFD Connectivity Fault Detection CFI Canonical Format Indicator CFM Connectivity Fault Management CHAP Challenge Handshake Authentication Protocol

4 CID Calling Identity Delivery CIDR Classless Inter-Domain Routing CIR Committed Information Rate CIR ALLOW Committed Information Rate ALLOW CIST Common and Internal Spanning Tree CLC Channel Link Control CLI Calling Line Identification CLI Command Line Interface CLNP Connection-Less Network Protocol CLP Cell Loss Priority CMC Call Management Center CNG Comfortable Noise Generation CNG Calling Tone CNGCED Calling Tone CO Central Office COPS Common Open Policy Service CoS Class of Service CPE Customer Premises Equipment CPOS Channelized POS CPS Certification Practice Statement CPTone Call Progress Tone CQ Custom Queuing CR Constraint-based Routing CRC Cyclic Redundancy Check CRC Cyclic Redundancy Code CRC4 Cyclic Redundancy Check 4 CRL Certificate Revocation List CRLDP Constraint-based Routed Label Distribution Protocol CRLSP Constraint-based Routed Label Switched Paths C-RP Candidate-RP CS Class Selector CSMA/CD Carrier Sense Multiple Access/Collision Detect CSNP Complete Sequence Number PDU CSPF Constraint-based Shortest Path First CST Common Spanning Tree CT Class Type CTR Counter mode CTS Clear to Send

5 CUG Closed User Group CV Connectivity Verification CWMP CPE WAN Management Protocol

D Return

DAC Digital to Analog Converter DAD Duplicate Address Detection DAE Dynamic Authorization Extensions DAR Deeper Application Recognition DCBX Data Center Bridging Exchange Protocol DCC Dial Control Center DCD Data Carrier Detection DCE Data Center Ethernet DCE Data Circuit-terminating Equipment DCF Distributed Coordination Function DCN Data Communication Network DCR Differential Clock Recovery DD Database Description DDN Digital Data Network DDNS Dynamic Domain Name System DDoS Distributed Denial of Service DDR Dial-on-Demand Routing DE Discard Eligibility DED Designated Edge Device DER Distinguished Encoding Rules DF Designated Forwarder DGAF Downstream Group-Addressed Forwarding DH Diffie-Hellman DHCP Dynamic Host Configuration Protocol DHCPv6 Dynamic Host Configuration Protocol for IPv6 DID Direct Inward Dialing DID Device ID DiffServ Differentiated Service DIS Designated IS DLCI Data Link Connection Identifier DLDP Device Link Detection Protocol DLSw Data Link Switching DM Diagnostic and Monitoring DM Delay Measurement

6 DMC Device Management Controller DMM Delay Measurement Message DMR Delay Measurement Reply DMZ Demilitarized Zone DN Directory Number DN Distinguished Name DNAT Destination Network Address Translation DND Do-not Disturb DNS Domain Name System DNU Do Not Use for synchronization DoD Downstream On Demand DoS Denial of Service DP Drop Profile DPD Dead Peer Detection DR Designated Router DRB Designated Routing Bridge DRE Data Redundancy Elimination DS Differentiated Services DSA Digital Signature Algorithm DSCP Differentiated Services Code Point DSL Digital Subscriber Line DS-Lite Dual Stack Lite DSU Data Service Unit DTD Document Type Definition DTE Data Terminal Equipment DTIM Delivery Traffic Indication Message DTLS Datagram Transport Layer Security DTMF Dual Tone Multi-Frequency DU Downstream Unsolicited DUID DHCP Unique Identifier DUID-LL DUID Based on Link-layer Address D-V Distance Vector DVMRP Distance Vector Multicast Routing Protocol DVPN Dynamic Virtual Private Network DWDM Dense Wavelength Division Multiplexing

E Return

E2ETC End-to-End Transparent Clock EAA Embedded Automation Architecture

7 EACL Enhanced ACL EAD Endpoint Admission Defense EAIS Ethernet Alarm Indication Signal EAN Ethernet Access Node EAP Extensible Authentication Protocol EAPOL Extensible Authentication Protocol over LAN EAPOL KCK EAPOL-Key Confirmation Key EAPOL KEK EAPOL-Key Encryption Key EAP-TLS Extensible Authentication Protocol -Transport Layer Security EBS Excess Burst Size ECDSA Elliptic Curve Digital Signature Algorithm ECM Encapsulated Control Message ECM Error Correction Mode ECN Explicit Congestion Notification ECP Edge Control Protocol ECT Equal Cost Tree ECWmax Exponent form of CWmax ECWmin Exponent form of CWmin ED Edge Device EDCA Enhanced Distributed Channel Access EEE Energy Efficient Ethernet EF Expedited Forwarding EFM Ethernet First Mile EGP Exterior Gateway Protocol EID Endpoint Identifier EIRP Effective Isotropic Radiated Power EM Event Monitor EMO Endpoint Mobile Office ENDC EVI Neighbor Discovery Client ENDC Enhanced Neighbor Discovery Client End-Of-RIB End of Routing-Information-Base ENDP EVI Neighbor Discovery Protocol ENDP Enhanced Neighbor Discovery Protocol ENDS EVI Neighbor Discovery Server ENDS Enhanced Neighbor Discovery Server ENUM Telephone Number Mapping EOAM Ethernet Operation, Administration and Maintenance EoPW Ethernet over Pseudo Wire

8 EPC External Path Computation ER Edge Relay ERPS Ethernet Ring Protection Switching ERT Export Route-target ES End System ESF Extended Super Frame ESMC Ethernet Synchronous Message Channel ESN Extended Sequence Number ESP Encapsulating Security Payload ESS Exchange Switch Support ESS Extended Service Set ETR Egress Tunnel Router ETS Enhanced Transmission Selection ETSI European Telecommunications Standards Institute EUI Extended Unique Identifier EUI-64 64-bit Extended Unique Identifier EVB Edge Virtual Bridging Event MIB Event Management Information Base EVFP Exchange Virtual Fabrics Parameter EVI Ethernet Virtual Interconnect

F Return

FA Foreign-AC FA Foreign Agent FAC Feature Access Code FAS Frame Alignment Signal FC Forwarding Class FC Fibre Channel FCF FCoE Forwarder FCM Fast Connect Modem FCoE Fibre Channel over Ethernet FCS Fabric Configuration Server FCS Frame Check Sequence FDB Forwarding Database FDMI Fabric Device Management Interface FE Fast Ethernet FEAC Far End Alarm and Control signal FEC Forwarding Equivalence Class FECN Forward Explicit Congestion Notification

9 FEP Front End Processor FF Fixed-Filter FFD Fast Failure Detection FG Forwarding Group FHR First Hop Router FIB Forwarding Information Base FIFO First In First Out FIFO First In First Out Queuing FIP FCoE Initialization Protocol FIP Snooping FCoE Initialization Protocol Snooping FIPS Federal Information Processing Standards FNG Fault Notification Generator FP Forwarding Profile FPMA Fabric Provided MAC Address FQ Fair Queuing FQDN Fully Qualified Domain Name FR Frame Relay FRR Fast Reroute FRTP Frame Relay Traffic Policing FRTS Frame Relay Traffic Shaping FRU Field Replaceable Unit FS Forced Switch FSK Frequency Shift Keying FSPF Fabric Shortest Path First FT Fast BSS Transition FT Fault Tolerance FTN FEC to NHLFE map FTP File Transfer Protocol FXO Foreign Exchange Office FXS Foreign Exchange Station

G Return

GARP Generic Attribute Registration Protocol GAS Generic advertisement service GDOI Group Domain of Interpretation GE Gigabit Ethernet GI Guard Interval GK GateKeeper GM Grandmaster Clock

10 GM Group Member GMK Group Master Key GNE Gateway Network Element GNS Get Nearest Server GOLD Generic OnLine Diagnostics GPS Global Positioning System GR Graceful Restart GRE Generic Routing Encapsulation Group Domain VPN Group Domain Virtual Private Network GSMPv3 General Switch Management Protocol Version 3 GTC Generic Token Card GTK Group Temporal Key GTP GPRS Tunneling Protocol GTP-U GPRS Tunneling Protocol User GTS Generic Traffic Shaping GTSM Generalized TTL Security Mechanism GVRP GARP VLAN Registration Protocol GW Gateway

H Return

HA Home Agent HA Home-AC HABP HW Bypass Protocol HBA Host Bus Adapter HDB3 High-density bipolar 3 HDLC High-level Data Link Control HDSL High-speed Digital Subscriber Line HGMP HW Group Management Protocol HGMPv2 HW Group Management Protocol version 2 HMAC Hash-based Message Authentication Code HoPE Hierarchy of PE HoVPN Hierarchy of VPN HQoS Hierarchical Quality of Service HTTP Hypertext Transfer Protocol HTTPS Hypertext Transfer Protocol Secure H-VPLS Hierarchical VPLS HWTACACS HW Terminal Access Controller Access Control System

I Return

11 IA Identity Association IACTP Inter Access Controller Tunneling Protocol IAD Integrated Access Device IANA Internet Assigned Numbers Authority IBGP Internal Border Gateway Protocol ICANN Internet Corporation for Assigned Names and Numbers ICMP Internet Control Message Protocol ICMPv6 Internet Control Message Protocol for IPv6 ICP IMA Control Protocol ICPIF Calculated Planning Impairment Factor ICRQ Incoming Call Request IDN Integrated Digital Network IDS Intrusion Detection System IE Information Element IE Interconnect Element IEEE Institute of Electrical and Electronics Engineers IETF Internet Engineering Task Force IGMP Internet Group Management Protocol IGMP Snooping Internet Group Management Protocol Snooping IGP Interior Gateway Protocol IGTK Integrity Group Temporal Key IIH Intermediate System-to-Intermediate System Hello IKE Internet Key Exchange IKEv2 Internet Key Exchange Version 2 ILM Incoming Label Map ILS Internet Locator Service IM Instant Messaging IMA Inverse Multiplexing for ATM iMC Intelligent Management Center IMSI International Mobile Subscriber Identification Number InARP Inverse Address Resolution Protocol IND Inverse Neighbor Discovery IntServ Integrated Service IPC Inter-process Communication IPE Image Package Envelope IPHC IP Header Compression IPN IGTK Packet Number IPng IP Next Generation

12 IPoA IP over ATM IPoEoA IP over Ethernet over ATM IPS Intrusion Prevention System IPSec IP Security IPTA IP Terminal Access IPv6 Internet Protocol version 6 IPv6 MBGP IPv6 Multicast BGP IPv6 ND IPv6 Neighbor Discovery IPv6 PIM IPv6 Protocol Independent Multicast IPv6 PIM Protocol Independent Multicast for IPv6 IPv6 PIM Snooping IPv6 Protocol Independent Multicast Snooping IPX Internetwork Packet Exchange IRDP ICMP Router Discovery Protocol IRF Intelligent Resilient Framework IS Intermediate System ISAKMP Internet Security Association and Key Management Protocol ISATAP Intra-Site Automatic Tunnel Addressing Protocol ISDN Integrated Services Digital Network I-SID Backbone Service Instance Identifier IS-IS Intermediate System-to-Intermediate System ISO International Organization for Standardization ISP Internet Service Provider ISPF Incremental Shortest Path First ISSU In-Service Software Upgrade IST Internal Spanning Tree ITA Intelligent Target Accounting ITR Ingress Tunnel Router ITSP Internet Telephone Service Provider ITU-T International Telecommunication Union Telecommunication IV Initialization Vector IVR Interactive Voice Response

K Return

KS Key Server

L Return

L2F Layer 2 Forwarding L2PT Layer 2 Protocol Tunneling L2TP Layer 2 Tunneling Protocol

13 L2VPN Layer 2 Virtual Private Network L3VPN Layer 3 Virtual Private Network LAC L2TP Access Concentrator LACP Link Aggregation Control Protocol LACPDU Link Aggregation Control Protocol Data Unit LAN Local Area Network LB Load Balance LB Label Base LBM Loopback Message LBR Loopback Reply LC Logic Channel LCFO Loop Current Feed Open LCI Logic Channel Identifier LCP Link Control Protocol LDAP Lightweight Directory Access Protocol LDN Local Dialing Number LDP Label Distribution Protocol LDP ID LDP Identifier LDPC Low-Density Parity Check LER Label Edge Router LFI Link Fragmentation and Interleaving LFIB Label Forwarding Information Base LGS Loop-start & Ground-start Signaling LI Leap Indicator LLC Logical Link Control LLDP Link Layer Discovery Protocol LLDPDU Link Layer Discovery Protocol Data Unit LLDP-MED Link Layer Discovery Protocol Media Endpoint Discovery LLQ Low Latency Queuing LM Loss Measurement LMI Local Management Interface LMM Loss Measurement Message LMR Loss Measurement Reply LNS L2TP Network Server LO Label-block Offset LOCV Loss of Connectivity Verification defect LOS Loss of Signal LPU Line Processing Unit

14 LPU Port Line Processing Unit Port LQR Link Quality Reports LR Label Range LR Line Rate LSA Link State Advertisement LSA Link State Acknowledgment LSAck Link State Acknowledgment LSDB Link State DataBase LSP Link State PDU LSP Label Switched Path LSPDU Link State Protocol Data Unit LSR Label Switching Router LSR Link State Request LSR Link State Record LSU Link State Update LT Linktrace LTM Linktrace Message LTR Linktrace Reply LTS L2TP Tunnel Switch LVF Listening Virtual Forwarder LZ Lempel-Ziv compression

M Return

M flag Managed Address Configuration Flag MA Mobility Agent MA Maintenance Association MAC Media Access Control MAC Message Authentication Code MACsec Media Access Control Security MAD Multi-Active Detection MAM Maximum Allocation Model MAN Metropolitan Area Network MAP Mesh Access Point MBGP Multicast BGP MBS Maximum Burst Size MC Mobility Controller MCC Mobile Country Code MCE Multi-VPN-instance Customer Edge MCS Modulation and Coding Scheme

15 MCU Multipoint Control Unit MD Maintenance Domain MD Multicast Domain MDC Multitenant Device Context MDI Medium Dependent Interface MDL Maintenance Data Link mDNS Multicast DNS MDT Multicast Distribution Tree MED Multi-Exit Discriminator MEP Maintenance association End Point MFAS Multiframe FAS MFC Multi-Frequency Compelled MFF MAC-Forced Forwarding MFR Multilink Frame Relay MGCP Media Gateway Control Protocol MIB Management Information Base MIC Message Integrity Check MIMO Multiple Input,Multiple Output MIP Maintenance association Intermediate Point MIP Mobile IP MKA MACsec Key Agreement MKD Mesh Key Distributor MLD Multicast Listener Discovery Protocol MLD Snooping Multicast Listener Discovery Snooping MLSP Mobile Link Switch Protocol MME Management MIC IE MNC Mobile Network Code MoH Music on Hold MOS Mean Opinion Scores MOTD Message of The Day MP Maintenance Point MP Merge Point MP_REACH_NLRI Multiprotocol Reachable NLRI MP_UNREACH_NLRI Multiprotocol Unreachable NLRI MP-BGP Multiprotocol Border Gateway Protocol MPDU MAC Protocol Data Unit MPE Middle-Level PE MPLS Multiprotocol Label Switching

16 MPLS TE Multiprotocol Label Switching Traffic Engineering MPLS-TP MPLS Transport Profile MPP Mesh Portal Point MQC Model QoS Command MR Merge Request MR Map Resolver MRIB Multicast Routing Information Base MRP Multiple Registration Protocol MRPDU MRP Protocol Data Unit MRRA Merge Request Resource Allocation MRU Maximum-Receive-Unit MS Manual Switch MS Map Server MSCHAP Microsoft Challenge Handshake Authentication Protocol MSDP Multicast Source Discovery Protocol MSDU MAC Service Data Unit MSK Multicast Session Key MSOH Multiplex Section Overhead MSS Maximum Segment Size MSTI Multiple Spanning Tree Instance MSTP Multiple Spanning Tree Protocol MT Multicast Tunnel MTR Multi-Topology Routing MTU Maximum Transmission Unit MTU-s Multi-Tenant Unit switch MU Mobile Unit MVRP Multiple VLAN Registration Protocol MWI Message Waiting Indication

N Return

NA Neighbor Advertisement NAI Network Access Identifier NAPT Network Address Port Translation NAPT-PT Network Address Port Translation-Protocol Translation NAS Network Access Server NAS-ID Network Access Server Identifier NAS-Port-ID Network Access Server Port Identifier NAT Network Address Translation NAT-PT Network Address Translation-Protocol Translation

17 NBAR Network Based Application Recognition NBMA Non-Broadcast Multi-Access NCP Network Control Protocol ND Neighbor Discovery NDA NetStream Data Analyzer NDE NetStream Data Exporter NDP Neighbor Discovery Protocol NDPP Network Device Protection Profile NE Network Element NET Network Entity Title NetBIOS Network Basic Input/Output System NETCONF Network Configuration Protocol NFAS non–FAS NFV Network Function Virtualisation NHLFE Next Hop Label Forwarding Entry NI National ISDN NIB Nexthop Information Base NII Network International Identifier NIST National Institute of Standards and Technology NIT Not Initial Terminal NLB Network Load Balancing NLBS Network Load Balancing Service NLPID Network Layer Protocol Identifier NLRI Network Layer Reachability Information NM Network Management NMFAS Non-Multiframe FAS NMS Network Management Server NMS Network Management System NMS Network Management Station NNI Network-to-Network Interface NO-PAT Not Port Address Translation NPDU Network Protocol Data Unit NPE Network Provider Edge NPV N_Port Virtualization NQA Network Quality Analyzer NR No Request nrt-VBR non-real-time Variable Bit Rate NS Neighbor Solicitation

18 NSAP Network Service Access Point NSC NetStream Collector NSF Non-Standard Facilities NSR Nonstop Routing NSS Number of Spatial Streams NTDP Neighbor Topology Discover Protocol NTE Named Telephone Event NTP Network Time Protocol NTT Nippon Telegraph and Telephone Corpration NVC Network Virtualization Controller NVE Network Virtualization Edge NVGRE Network Virtualization using Generic Routing Encapsulation

O Return

O Flag Other Stateful Configuration Flag OAA Open Application Architecture OAMPDU OAM Protocol Data Unit OAP Open Application Platform OC Ordinary Clock OC Optical Carrier ODF Optical Distribution Frame OFDM Orthogonal Frequency Division Multiplexing OI Organization Identifier OID Object Identifier OOB Out-of-Band ORF Outbound Route Filtering OSI Open System Interconnection OSPF Open Shortest Path First OUI Organizationally Unique Identifier OVSDB Open vSwitch Database

P Return

P2MP Point-to-MultiPoint P2P PW to PW P2P Peer-to-Peer P2P Point-to-Point P2PTC Peer-to-Peer Transparent Clock PA Provider Allocated PADT PPPoE Active Discovery Terminate

19 PAGP Port Aggregation Protocol PAM Port to Application Map PAM Pulse Amplitude Modulation PAP Password Authentication Protocol PAT Port Address Translation PBAR Port Based Application Recognition PBB Provider Backbone Bridge PBBN Provider Backbone Bridge Network PBN Provider Bridge Network PBR Policy-based Routing PBX Private Branch Exchange PCB Protocol Control Block PCC Path Computation Client PCE Path Computation Element PCEP Path Computation Element Communication Protocol PCM Pulse Code Modulation PCR Peak Cell Rate PD Prefix Delegation PD Powered Device PDH Plesiochronous Digital Hierarchy PDP Policy Decision Point PDU Protocol Data Unit PE Provider Edge PE-agg PE Aggregation PEAP Protected Extensible Authentication Protocol PEAP-GTC Protected Extensible Authentication Protocol-Microsoft Generic Token Card PEAP-MSCHAPv2 Protected Extensible Authentication Protocol-Microsoft Challenge Handshake Authentication Protocol v2 PEM Power Entry Module PEM Privacy Enhanced Mail PEP Policy Enforcement Point PFC Priority-based Flow Control PFC Protocol-Field-Compression PFS Perfect Forward Secrecy PHB Per-hop Behavior PHP Penultimate Hop Popping PI Progress Indicator PI Power Interface

20 PI Provider Independent PIC Prefix Independent Convergence PIM Protocol Independent Multicast PIM Snooping Protocol Independent Multicast Snooping PIM-DM Protocol Independent Multicast-Dense Mode PIM-SM Protocol Independent Multicast-Sparse Mode PIM-SSM Protocol Independent Multicast Source-Specific Multicast PIN Personal Identification Number PIR Peak Information Rate PKCS Public Key Cryptography Standards PKI Public Key Infrastructure PLCP Physical Layer Convergence Procedure PLMN Public Land Mobile Network PLR Point of Local Repair PMK Pairwise Master Key PMTU Path MTU PoE Power over Ethernet POH Path Overhead POP3 Post Office Protocol - Version 3 POS Point of Sale PPP Point-to-Point Protocol PPPoA PPP over ATM PPPoE Point-to-Point Protocol over Ethernet PPPoEoA PPPoE over ATM PPTP Point-to-Point Tunneling Protocol PQ Priority Queuing PRBS Pseudo Random Bit Sequence PRC Primary Reference Clock PRI Primary Rate Interface PRL Preferred Roaming List PS Protection Switching PSB Path State Block PSC Protection State Coordination PSE Power Sourcing Equipment PSK Pre-Shared Key PSN Packet Switched Network PSNP Partial Sequence Number PDU PSST Principal Switch Selection Timer

21 PSTN Public Switched Telephone Network PTK Pairwise Transient Key PTP Precision Time Protocol PTY Pseudo-Terminals PUK PIN Unlocking Key PVC Permanent Virtual Circuit PVC PQ PVC Priority Queuing PVID Port VLAN ID PVP Permanent Virtual Path PVST Per-VLAN Spanning Tree PW Pseudowire PW-ACH PW Associated Channel Header PWE3 Pseudo Wire Emulation Edge-to-Edge PXE Preboot eXecution Environment

Q Return

QCN Quantized Congestion Notification QL Quality Level QoS Quality of Service QPPB QoS Policy Propagation Through the Border Gateway Protocol

R Return

RA Router Alert RA Router Advertisement RA Registration Authority RADIUS Remote Authentication Dial-In User Service RAI Remote Alarm Indication RALM RADIUS Authenticated Login Using MAC-address R-APS Ring Automatic Protection Switching RAS Registration, Admission, and Status RB Routing Bridge RBAC Role Based Access Control RCA Release Change Authorization RCF Reconfigure Fabric RCPI Received Channel Power Indicator RD Routing Domain RD Route Distinguisher RDI Remote Defect Indication RDM Russian Dolls Model

22 RED Random Early Detection REG Registration Center RFID Radio Frequency Identification RIB Routing Information Base RIP Routing Information Protocol RIP-2 Routing Information Protocol version 2 RIPng RIP next generation RLOC Routing Locator RLSN Remote Link Status Notification RMON Remote Network Monitoring ROA Recognized operating Agency RP Rendezvous Point RP Reflective Relay RPA Rendezvous Point Address RPC Remote Procedure Call RPF Reverse Path Forwarding RPI Receive Power Indication RPL Rendezvous Point Link RPL Ring Protection Link RPR Resilient Packet Ring RPS Redundant Power System RP-Set Rendezvous Point Set RPT Rendezvous Point Tree RR Reflective Relay RR Router Renumber RR Route Reflector RRI Reverse Route Injection RRM Radio Resource Management RRPP Rapid Ring Protection Protocol RS Router Solicitation RSB Reservation State Block RSCN Registered State Change Notification RS-DCC Resource-Shared DCC RSH Remote Shell RSN Robust Security Network RSNA Robust Security Network Association RSNI Received Signal to Noise Indicator RSOH Regenerator Section Overhead

23 RSSI Received Signal Strength Indication RSSI Received Signal Strength Indicator RSTP Rapid Spanning Tree Protocol RSVP Resource Reservation Protocol RT Route Target RTC Remote Terminal Connection RTCP Real-Time Transport Control Protocol RTM Real-Time Event Manager RTP Real-Time Transport Protocol RTPQ Real-Time Transport Protocol Priority Queuing RTS Request to Send RTSP Real Time Streaming Protocol RTT Round-trip Time rt-VBR Real-time Variable Bit Rate RU Rack Unit

S Return

S/MIME Secure/Multipurpose Internet Mail Extensions SA Source Active SA Security Association SA Query Security Association Query SABM Set Asynchronous Balanced Mode SACK Selective Acknowledgment SAE Simultaneous authentication of equals SAFI Subsequent Address Family Identifier SAII Source Attachment Individual Identifier SAN Storage Area Networks SAP Service Advertising Protocol SAToP Structure-Agnostic TDM over Packet SAVI Source Address Validation SB Service Bridge SBM Subnetwork Bandwidth Management SCCP Skinny Client Control Protocol SCEP Simple Certificate Enrollment Protocol SCFF Single Choke Fairness Frame SCR State Change Registration SCR Sustainable Cell Rate SD Signal Degrade SDH Synchronous Digital Hierarchy

24 SDLC Synchronous Data Link Control SDN Software Defined Network SDP Session Description Protocol SDSL Symmetric Digital Subscriber Line SDU Service Data Unit SE Shared-Explicit SEC SDH Equipment Clock SF Super Frame SF Signal Fail SFC Stage Fabric Configuration Update sFlow Sampled Flow SFM Source-Filtered Multicast SFP Small Form-factor Pluggable SFTP Secure FTP Short GI Short Guard Interval SIP Session Initiation Protocol SIPS SIP Secure SLA Service Level Agreement SLAAC Stateless Address Autoconfiguration SLC Service Logic Control SLIP Serial Line Internet Protocol SMA State Machine based Anti-spoofing SMTP Simple Mail Transfer Protocol SN Serial Number SNA System Network Architecture SNAP Subnet Access Protocol SNAT Source Network Address Translation SNMP Simple Network Management Protocol SNP Sequence Number PDU SNPA Subnetwork Point of Attachment SNR Signal-to-Noise Ratio SNTP Simple NTP SOAP Simple Object Access Protocol SOH Section Overhead SONET Synchronous Optical Network SoO Site of Origin SP Service Provider SP Scheduler Policy

25 SP Strict Priority SPB Shortest Path Bridging SPBM Shortest Path Bridging MAC Mode SPBN Shortest Path Bridging Network SPCS Stored Program Control Switching System SPE Superstratum PE or Service Provider-end PE SPF Shortest Path First SPI Security Parameter Index SPID Service Profile Identification SPSource ID Shortest Path Source Identifier SPT Shortest Path Tree SQL Structured Query Language Srefresh Summary Refresh SRST Survivable Remote Site Telephony sr-TCM single rate TCM SRTP Secure Real-Time Transport Protocol SSA SIP Stack Adapt SSH Secure Shell SSID Service Set Identifier SSL Secure Sockets Layer SSM Synchronization Status Message SSM Source-Specific Multicast SSP Switch-to-Switch Protocol SSU-A primary level SSU SSU-B second level SSU ST Shared Tree STBC Space-Time Block Coding STP Spanning Tree Protocol STR Switch Trace Route SVC Static Virtual Circuit SVC Switched Virtual Circuit SVP SpectraLink Voice Priority

T Return

TA Terminal Adapter TACACS Terminal Access Controller Access Control System TACL Temporary Access Control List TAI International Atomic Time TAII Target Attachment Individual Identifier

26 TC Topology Checksum TC Transparent Clock TC Traffic Class TC Topology Change TCA Topology Change Acknowledge TCAM Ternary Content Addressable Memory TCI Tag Control Information Tcl Tool Command Language TCN BPDU Topology Change Notification BPDU TDM Time Division Multiplexing TE Traffic Engineering TEDB TE DataBase TEI Terminal Endpoint Identifier TEK tranfic encrytion key TFO Transport Flow Optimization TFTP Trivial File Transfer Protocol TK Temporal Key TKIP Temporal Key Integrity Protocol TLS Transparent LAN Service TLS Transport Layer Security TLV Type/Length/Value ToS Type of Service TP Traffic Policing TP Topology Protection TPC Transmit Power Control TPDU Transport Protocol Data Unit TPID Tag Protocol Identifier TPMR Two-Port MAC Relay TRILL TRansparent Interconnection of Lots of Links TRIP Triggered RIP tr-TCM two-rate TCM TS Traffic Shaping TSA Tunnel Switching Aggregator TST Test TTL Time to Live TTLS Tunneled Transport Layer Security TTY True Type Terminal TU Tributary Unit

27 TUG Tributary Unit Group TXOP Limit Transmission Opportunity Limit

U Return

UA Unnumbered Acknowledge UA User Agent UAC User Agent Client U-APSD Unscheduled Automatic Power-Save Delivery UAS User Agent Server UBR Unspecified Bit Rate UDLD Uni-directional Link Direction UFC Update Fabric Configuration UIM User Identity Module UNI User Network Interface UPE User facing-Provider Edge UPE Underlayer PE or User-end PE URI Uniform Resource Identifier URL Uniform Resource Locator uRPF Unicast Reverse Path Forwarding USK Unicast Session Key USM User-Based Security Model UTC Coordinated Universal Time UTM Unified Threat Management

V Return

VA Virtual Access VACM View-based Access Control Model VAD Voice Activity Detection VAM VPN Address Management VBR-NRT Variable Bit Rate-Non Real Time VBR-RT Variable Bit Rate-Real Time VC Virtual Container VC Virtual Circuit VCC Virtual Circuit Connection VCCV Virtual Circuit Connectivity Verification VCF Vertical Converged Framework VCI Virtual Channel Identifier VCN Virtual Circuit Number VCPM Voice Co-processing Module

28 VD Virtual Device VDP VSI Discovery and Configuration Protocol VDSL Very high-speed Digital Subscriber Line VE Virtual Ethernet VE-Bridge Virtual Ethernet Bridge VF Owner Virtual Forwarder Owner VFW Virtual Firewall VLAN Virtual Local Area Network VM Virtual Machine VMM Virtual Machine Management VN Version Number VNC Virtual Network Computing VNI VXLAN Network Identifier VoD Video on Demand VoIP Voice over IP VP Virtual Path VPC Virtual Path Connection VPDN Virtual Private Dial-up Network VPI Virtual Path Identifier VPLS Virtual Private LAN Service VPM Voice Processing Module VPN Virtual Private Network VR Virtual Router VRF Virtual Routing and Forwarding VRRP Virtual Router Redundancy Protocol VSAN Virtual Storage Area Network VSD Virtual Security Domain VSI Virtual Station Interface VSI Virtual Switch Instance VSID Virtual Subnet Identifier VSIP Virtual Service IP VSRP Virtual Service Redundancy Protocol vSwitch Virtual Switch VT Virtual Template VTEP VXLAN Tunnel End Point VTP VLAN Trunking Protocol VTY Virtual Type Terminal VXLAN Virtual eXtensible LAN

29 W Return

WAAS Wide Area Application Services WAI WLAN Authentication Infrastructure WAN Wide Area Network WAPI WLAN Authentication and Privacy Infrastructure WASS Wide Area Application Services WDS Wireless Distribution System WEP Wired Equivalent Privacy WFQ Weighted Fair Queuing WHA WLAN High Availability WIDS Wireless Intrusion Detection System WiNet Wisdom Network WINS Windows Internet Naming Service WIPS Wireless Intrusion Prevention System WLAN Wireless Local Area Network WLAN RRM Radio Resource Management WMM Wi-Fi Multimedia WPA Wi-Fi Protected Access WPAD Web Proxy Auto-Discovery WPI WLAN Privacy Infrastructure WRED Weighted Random Early Detection WRR Weighted Round Robin WSA WLAN Spectrum Analysis WWN World Wide Name

X Return

XFP 10-Gigabit Small Form-factor Pluggable XML Extensible Markup Language XSD XML Schema Definition XSD XML Schema Document

Z Return

ZBR Zone Border Router