AAA

authentication, authorization, and accounting

AAL

ATM adaptation layer

ABR

available bit rate

ACK

acknowledgment

ACO

audible cutoff

ACR

allowed cell rate

ADM

Add Drop Multiplexer

AESA

ATM End System Address

AESO

Auxiliary Extended Security Option

AFI

authority and format identifier

AGG

aggregate

AIS

alarm indication signal

AMI

alternate mark inversion

ANSI

American National Standards Institute

API

Application Programming Interface

APS

Automatic Protection Switching

ARAP

AppleTalk Remote Access Protocol

ARP

Address Resolution Protocol

ARPA

Advanced Research Projects Agency

ATD IE

ATM Traffic Descriptor Information Element

ATM

Asynchronous Transfer Mode

ATM-P

ATM Pseudo interface

B8ZS

binary 8-zero substitution

Bc

Committed Burst

BECN

backward explicit congestion notification

BER

bit error rate

BIP

bit interleaved parity

BISDN

Broadband Integrated Services Digital Network

BITS

building integrated timing supply

BOOTP

Bootstrap Protocol

CAC

connection admission control

CAS

channel associated signalling

CBR

constant bit rate

CD

Carrier Detect

CDP

Cisco Discovery Protocol

CDS3

channelized digital signal level 3

CDV

cell delay variation

CDVT

cell delay variation tolerance

CE1

channelized E1

CES

circuit emulation service

CES-IWF

CES interworking function

CHAP

Challenge Handshake Authentication Protocol

CIR

committed information rate

CLNS

Connectionless Network Service

CLP

cell loss priority

CLR

cell loss ratio

CPU

Central Processing Unit

CRC

cyclic redundancy check

CTC

common transmit clocking

CTD

cell transfer delay

CTT

Connection Traffic Table

CUG

closed user group

DCA

Defense Communications Agency

DCC

Data Country Code

DCE

data communications equipment

DE

discard eligible

DFI

Domain Specific Part Format Identifier

DLCI

data-link connection identifier

DNIS

Distributed Network Information Services

DNS

Domain Name System

DTL

designated transit list

EFCI

Explicit Forward Congestion Indication

EPD

early packet discard

ESI

end system identifier or end-station identifier

ESO

Extended Security Option

FC-PCQ

feature card per-connection queueing (Catalyst 8510 MSR and LightStream 1010)

FC-PFQ

feature card per-flow queueing (Catalyst 8510 MSR and LightStream 1010)

FDL

facility data link

FEBE

far-end block errors

FECN

forward explicit congestion notification

FPGA

field-programmable gate array

FRC

frame redundancy check

GCRA

generic cell rate algorithm

HDB3

line code type used on E1 circuits

ICD

International Code Designator

ICMP

Internet Control Message Protocol

ICP

IMA Control Protocol

IE

information element

IEEE

Institute of Electrical and Electronics Engineers

IETF

Internet Engineering Task Force

IGRP

Interior Gateway Routing Protocol

IISP

Interim-Interswitch Signalling Protocol

ILMI

Interim Local Management Interface (UNI 3.1) or Integrated Local Management Interface (UNI 4.0)

IMA

inverse multiplexing over ATM

IME

interface management entity

IP

Internet Protocol

IPSO

IP Security Option

ITC

independent transmit clocking

ITU-T

International Telecommunications Union Telecommunication Standardization Sector

LANE

LAN Emulation

LEC

LAN Emulation Client

LECS

LAN Emulation Configuration Server

LGN

logical group node

LLC2

Logical Link Control, type 2

LMI

Local Management Interface

MAC

Media Access Control

MBS

maximum burst size

MCR

minimum cell rate

MDL

maintenance data link

MIB

Management Information Base

MMF

multimode fiber

MOP

Maintenance Operation Protocol

MSC

modular switch controller

MSR

multiservice ATM switch router

MTU

maximum transmission unit

mux

multiplexing device

NCDP

Network Clock Distribution Protocol

NCP

Network Control Protocol or Network Control Program

NLESO

Network Level Extended Security Option

NNI

Network-to-Network Interface

NSAP

network service access point

NTP

Network Time Protocol

NVRAM

nonvolatile random-access memory

OAM

Operation, Administration, and Maintenance

OIR

online insertion and removal

OSF

oversubscription factor

PCI

protocol control information

PCR

peak cell rate

PDU

protocol data unit

PGL

peer group leader

PIE

protocol information element

PIF

port interface

ping

packet internet groper

PLCP

physical layer convergence procedure

PLD

programmable logic device

PNNI

Private Network-Network Interface or Private Network Node Interface

POS

packet over SONET

PPP

Point-to-Point Protocol

PRI

Primary Rate Interface

PSTN DDR

Public Switched Telephone Network dial-on-demand routing

PTSE

PNNI topology state element

PTSP

PNNI topology state packet

PVC

permanent virtual circuit

PVCC

permanent virtual channel connection

PVCL

permanent virtual channel link

PVP

permanent virtual path

PVPC

permanent virtual path connection

PVPL

permanent virtual path link

QOS

quality of service

QSAAL

Q.2931 protocol over signalling ATM adaptation layer

RARP

Reverse Address Resolution Protocol

RCC

routing control channels

rcp

remote copy protocol

RDI

remote defect indication

RIF

Routing Information Field

RM

resource management

RMON

Remote Monitoring

ROM

read-only memory

rsh

remote shell protocol

RST

reset

RSVP

Resource Reservation Protocol

SAP

service access point

SCR

sustainable cell rate

SCRMF

Sustained Cell Rate Margin Factor

SD

sequential data

SDU

service data unit

SGCP

Simple Gateway Control Protocol

SLIP

Serial Line Internet Protocol

SNAP

Subnetwork Access Protocol

SNMP

Simple Network Management Protocol

SONET

Synchronous Optical Network

SPE

synchronous payload envelope

SPVC

soft permanent virtual circuit

SPVP

soft permanent virtual path

SSCOP

Service Specific Connection Oriented Protocol

SSE

silicon switching engine

SSRP

Simple Server Redundancy Protocol

SVC

switched virtual circuit

SVCC

switched virtual circuit connection

SVP

switched virtual path

SVPC

switched virtual path connection

TACACS

Terminal Access Controller Access Control System

TBR

tag bit rate

TC

tag-controlled

TCA

threshold crossing alarm

TCP

Transmission Control Protocol

TDP

Tag Distribution Protocol

TFIB

Tag Forwarding Information Base

TFTP

Trivial File Transfer Protocol

ToS

type of service

TSP

tag-switched path or topology state packet

TTL

Time To Live

TVC

tag VC

UART

Universal Asynchronous Receiver/Transmitter

UBR

unspecified bit rate

UDP

User Datagram Protocol

UNI

User-Network Interface

UPC

usage parameter control

UTC

Coordinated Universal Time

VBR

variable bit rate

VBR-NRT

variable bit rate non-real time

VBR-RT

variable bit rate-real time

VC

virtual channel

VCC

virtual channel connection

VCD

virtual circuit descriptor

VCI

virtual channel identifier

VCL

virtual channel link

VLAN

virtual LAN

VP

virtual path

VPC

virtual path connection

VPI

virtual path identifier

VPL

virtual path link

WDM

wave division multiplexing

WRR

weighted round-robin