AAL(ATM Adaptation Layer) ATM 适配层ABR（Available Bit Rate）可用比特率ADSL(Asymmetric Digital Subscriber Line) 非对称数字用户线ALOHA（Additive Link On-line HAwaii System) 一种随机接入系统，常用于卫星通信API(Application Programming Interface) 应用编程接口AAA（Authentication, Authorization and Accounting）认证、授权和计费ACL（Access Control List）访问控制列表 .是路由器和交换机接口的指令列表，用来控制端口进出的数据包。

ARP（Address Resolution Protocol）地址解析协议ANSI. American National Standards Institute) 美国国家标准局BGP（Border Gateway Protocol 边界网关协议）B-ISDN(Broadband-ISDN) 宽带综合业务数字网BRAS（Broadband Remote Access Server宽带远程接入服务器)CATV(CAble TV) 有线电视CBR(Constant Bit Rate) 恒定比特率CDMA(Code Division Multiplex Access)码分复用CGI(Common Gateway Interface) 通用网关接口CIR(Committed Information Rate) 许诺的信息速率CRC(Cyclic Redundancy Check)循环冗余校验CSMA/CD(Carrier Sense Multiple Access with Collision Detection)载波监听多点接入/冲突检测CLI（Command Line Interface）命令行接口DES(Data Encryption Standard) 数据加密标准DNS(Domain Name System) 域名系统DSL(Digital Subscriber Line)数字用户线DSSS(Direct Sequence Spread Spectrum) 直接序列扩频DTE(Data Terminal Equipment)数据终端设备EGP(External Gateway Protocol) 外部网关协议EIA(ELectronic Industries Association)美国电子工业协会FDDI(Fiber Distributed Data Interface) 光纤分布式数据接口FIFO(First In First Out)先进先出FTP(File Transfer Protocol)文件传输协议FTTB(Fiber To The Building)光纤到大楼FTTC(Fiber To The Curb)光纤到路边FTTH(Fiber To The Home)光纤到家KDC(Key Distribution Center) 密钥分配中心GARP（Generic Attribute Registration Protocol）通用属性注册协议GE（Gigabit Ethernet）千兆以太网GFC(Generic Flow Control) 一般流量控制GRE（Generic Routing Encapsulation 通用路由封装，一种安全隧道技术）GVRP（GARP VLAN Registration Protocol）GARP VLAN注册协议GMRP（GARP Multicast Registration Protocol）GARP多播注册协议HBA(Hub BUS Adapter 主机总线适配器)HDLC(High-level Data Link Control)高级数据链路控制HDSL(High speed DSL) 高级数字用户线HEC(Head Error Control)首部差错控制HFC(Hybrid Fiber Coax)光纤同轴混合网HTML(HyperText Markup Language) 超文本置标语音HTTP(HyperText Transfer Protocol)超文本传送协议HGMP（Huawei Group Management Protocol）华为组管理协议IAB(Internet Architecture Board) Interent体系结构委员会ICMP(Internet Control Message Procotol) Internet控制报文协议IDEA(International Data Encryption Algorithm)国际数据加密算法IEEE InstituteofElectrical and Electronics Engineers 国际电子电气工程师协会IFS(InterFrame Space)帧间间隔IGMP(Internt Group Management Protocol) Internet组管理协议IGP(Interior Gateway Protocol) 内部网关协议IP(Internet Protocol) 网际协议IPGW（Internet Protocol Gateway 互联网协议网关）IPSec（Internet Protocol Security Internet 协议安全性，Internet Protocol Security extensions IP协议安全扩展）IRF（Intelligent Resilient Framework智能弹性架构）H3C自主研发的软件虚拟化技术IPX(Internet Packet Exchange) 网络层的分组交换协议IR(InfraRed)红外技术ISA(Integrated Services Architecture)综合业务体系结构ISCSI(Internet Small Computer System Interface) 网络小型计算机接口ISDN(Integrated Services Digital Network) 综合业务数字网ISO. International Organization for Standardization 国际标准组织LAN(Local Area Network) 局域网LANE(LAN Emulation)局域网仿真LAPB(Link Access Procedure Balanced)链路接入规程(平衡型)LAPD(Link Access Procedure on the D Channel)链路接入规程(D通道) LLC(Logical Link Control) 链路控制规程MAC Media Access Control介质访问层MAC(Medium Access Control) 介质访问控制MAN(Metropolitan Area Network)城域网MARS(Multicast Address Resolution Server)多播地址解析服务器MBONE(Multicast Backbone On the InterNEt)多播主干网MBS(Maximum Burst Size)最大突发长度MCS(MultiCast Server)多播服务器MD(Message Digest)报文摘要Medium Access Control Address 介质访问控制地址MIB(Management Information Base) 管理信息库MIME(Multipurpose Internet Mail Extensions)通用Internet邮件扩充MPLS（Multi-Protocol Label Switching多协议标签交换）MSTP（Multi-Service Transfer Platform）MSR(Multi Services Router 多业务路由器)MTA(Message Transfer Agent) 报文传送代理NAT(Network Address Translation 网络地址传输协议)NCC(Network Control Center)网络控制中心NFS(Network File System)网络文件系统NIC(Network Interface Card)网络接口卡或网卡NII(National Information Infrastructure)国家信息基础设施NNI(Network-Node Interface)网络结点接口NVT(Network Virtual Terminal)网络虚拟终端NMS（Network Management System）网络管理系统NVRAM（Nonvolatile RAM）非易失随机存储器OAA（Open Application Architechure）开放体系架构OAM(Operation，Administration and Maintenance)(网络)运行、管理和维护OC(Optical Carrier)光载波OS(Operation System)(网络)运行环境OSI/RM(Open System Interconnection Reference Model)开放系统互连参考模型OSPF(Open Shortest Path First) 开放最短通路优先OSI/RM Open System Interconnection Reference Model. 开放系统互联参考模型PAD(Packet Assembler/Disassembler)分组装拆器PCM(Pulse Code Modulation)脉冲编码调制PCS(Personal Communication Services)个人通信PDU(Protocol Data Unit)协议数据单元POP(Post Office Protocol)邮局协议PPP(Point-to-Point Protocol)点对点协议PT(Payload Type) 负荷类型QAM(Quadrature Amplitude Modulation) 正交幅度调制QoS(Quality of Service) 服务质量RAID(Redundant Arrays of Independent Disks磁盘阵列)RAN(Residential Access Network)居民接入网RARP(Reverse Address Resolution Protocol)逆地址解析协议RBB(Residential BroadBand network)居民宽带网RFC(Request For Comments)是Internet的文档，其中的少部分成为标准文档RIP(Routing Information Protocol)路由信息协议RPC(Remote Procedure Call) 远程过程调用RTP(Real-time Transfer Protocol)实时传送协议RMON（Remote Network Monitoring）远程网络监视RSTP（Rapid Spanning Tree Protocol）快速生成树协议SAN（Storage Attached Network，存储区域网络）SAP(Service Access Point)服务访问点SCSI（Small Computer System Interface）SDN(Software Defined Network,软件定义网络）SDU(Service Data Unit)服务数据单元SMP（Symmetrical Multi-Processing，对称多处理技术）SMI(Structure of Management Information) 管理信息结构SMTP(Simple Mail Transfer Protocol)简单邮件传送协议SNA(System Network Architecture)IBM系统网络体系结构SNMP(Simple Network Management Protocol)简单网络管理协议SONET(Synchronous Optical Network)同步光纤网SSID(Service Set Identifier)服务标记SSL (Secure Sockets Layer 安全套接层)STP(Shielded Twisted Pair)屏蔽双绞线SNMP（Simple Network Management Protocol）简单网管协议STP（Spanning Tree Protocol）生成树协议TA(Terminal Adapter) 终端适配器TC(Transmission Convergence) 传输会聚(子层)TCB(Transmission Control Block) 传输控制程序块TCP(Transmission Control Protocol)传输控制协议TETP(Trivial File Transfer Protocol)简单文件传送协议TCP/IP（Transmission Control Protocol/ Internet Protocol）传输控制协议/互联网协议TFTP（Trivial File Transfer Protocol）简单文件传输协议TTL（Time To Live ）生存时间UA (User Agent) 用户代理UBR(Unspecified Data Transfer) 不指明比特率UIB(User Interface Box) 用户接口盒子UNI(User-to-Network Interface) 用户网络接口URL(Uniform Resource Locator)统一资源定位符UTP(Unshield Twisted Pair)非屏蔽式双绞线UDP（User Datagram Protocol）用户数据报协议VBR(Variable Bit Rate) 可变比特率VCI(Virtual Channel Identifier) 虚通路标识符VoD(Video on Demand)视频点播VPI(Virtual Path Identifier) 虚通道标识符VSAT(Very Small Aperture Terminal)甚小口径地球站VLAN（Virtual Local Area Network）虚拟局域网VOD（Video On Demand）视频点播VT（Virtual Terminal）虚拟终端VTY（Virtual Type Terminal）虚拟类型终端，用于虚拟线路VXLAN(Virtual Extensible LAN)WAN(Wide Area Network) 广域网WDM(Wavelengh Division Multiplexing) 波分复用XDR(eXternal Data Representation) 外部数据表示XTP(Real-time Transport Protocol)实时运输协议。