1 Acronyms

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10GE

Ten-GigabitEthernet

A                                                                                                                             Return

AAA

Authentication, Authorization and Accounting

ABC

Activity Based Costing

ABR

Area Border Router

AC

Alternating Current

ACK

ACKnowledgement

ACL

Access Control List

ADSL

Asymmetric Digital Subscriber Line

AFI

Address Family Identifier

ALG

Application Layer Gateway

AM

accounting management

ANSI

American National Standard Institute

AP

Access Point

ARP

Address Resolution Protocol

AS

Autonomous System

ASBR

Autonomous System Border Router

ASCII

American Standard Code for Information Interchange

ASE

Application service element

ASIC

Application Specific Integrated Circuit

ASM

Any-Source Multicast

ASN

Auxiliary Signal Network

AT

Advanced Technology

AT

Adjacency Table

ATM

Asynchronous Transfer Mode

AUX

Auxiliary (port)

B                                                                                                                             Return

BC

Bearer Control

BDR

Backup Designated Router

BFD

Bidirectional Forwarding Detection

BGP

Border Gateway Protocol

BIMS

Branch Intelligent Management System

BOOTP

Bootstrap Protocol

BPDU

Bridge Protocol Data Unit

BRI

Basic Rate Interface

BSR

Bootstrap Router

BT

BitTorrent 

BT

Burst Tolerance

C                                                                                                                             Return

CA

Call Appearance

CA

Certificate Authority

CAR

Committed Access Rate

CBS

Committed Burst Size

CBQ

Class Based Queuing

CBR

Constant Bit Rate

CBT

Core-Based Tree

CCITT

International Telephone and Telegraph Consultative Committee

CE

Customer Edge

CFD

Connectivity Fault Detection

CFM

Configuration File Management

CHAP

Challenge Handshake Authentication Protocol

CIDR

Classless Inter-Domain Routing

CIR

Committed Information Rate

CIST

Common and Internal Spanning Tree

CLNP

Connectionless Network Protocol

CPOS

Channelized POS

CPU

Central Processing Unit

CQ

Custom Queuing

CRC

Cyclic Redundancy Check

CR-LSP

Constraint-based Routing LSP

CR-LDP

Constraint-based Routing LDP

CSMA/CD

Carrier Sense Multiple Access/Collision Detect

CSNP

Complete SNP

CSPF

Constraint Shortest Path First

CST

Common Spanning Tree

CT

Call Transfer

CV

Connectivity Verification

D                                                                                                                             Return

DAR

Deeper Application Recognition

DCE

Data Circuit-terminal Equipment

DD

Database Description

DDN

Digital Data Network

DHCP

Dynamic Host Configuration Protocol

DIS

Designated IS

DLCI

Data Link Connection Identifier

DLDP

Device Link Detection Protocol

DNS

Domain Name System

DoD

Downstream on Demand

DoS

Denial of Service

DR

Designated Router

DSCP

Differentiated Services Codepoint Priority

DSP

Digital Signal Processor

DTE

Data Terminal Equipment

DU

Downstream Unsolicited

D-V

Distance Vector Routing Algorithm

DVMRP

Distance Vector Multicast Routing Protocol

DWDM

Dense Wavelength Division Multiplexing

E                                                                                                                             Return

EACL

Enhanced ACL

EAD

Endpoint Admission Defense

EAP

Extensible Authentication Protocol

EAPOL

Extensible Authentication Protocol over LAN

EBGP

External Border Gateway Protocol

EBS

Excess Burst Size

EGP

Exterior Gateway Protocol

ES

End System

ES-IS

End System-Intermediate System

F                                                                                                                             Return

FCoE

Fabric Channel over Ethernet

FC

Forwarding Class

FCS

Frame Check Sequence

FDDI

Fiber Distributed Data Interface

FDI

Forward Defect Indication

FEC

Forwarding Equivalence Class

FFD

Fast Failure Detection

FG

Forwarding Group

FIB

Forwarding information base

FIFO

First In First Out

FQDN

Full Qualified Domain Name

FR

Frame Relay

FRR

Fast ReRoute

FRTT

Fairness Round Trip Time

FT

Functional Test

FTP

File Transfer Protocol

G                                                                                                                                   Return

GARP

Generic Attribute Registration Protocol

GE

Gigabit Ethernet

GR

Graceful Restart

GRE

Generic Routing Encapsulation

GTS

Generic Traffic Shaping

GVRP

GARP VLAN Registration Protocol

H                                                                                                                             Return

HA

High Availability

HABP

HW Authentication Bypass Protocol

HDLC

High-level Data Link Control

HEC

Header Error Control

HoPE

Hiberarchy of PE

HoVPN

Hiberarchy of VPN

HQoS

Hierarchical Quality of Service

HSB

Hot Standby

HTTP

Hyper Text Transport Protocol

H-VPLS

Hiberarchy of VPLS

HVRP

Hierarchy VLAN Register Protocol

HWTACACS

HUAWEI Terminal Access Controller Access Control System

I                                                                                                                             Return

IA

Incoming Access

IANA

Internet Assigned Number Authority

IBGP

Internal BGP

IBM

International Business Machines

ICMP

Internet Control Message Protocol

ICMPv6

Internet Control Message Protocol for IPv6

ID

IDentification/IDentity

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

ILM

Incoming Label Map

ILS

Internet Locator Service

IN

Intelligent Network

IP

Internet Protocol

IPng

IP Next Generation

IPSec

IP Security

IPTN

IP Phone Telephony Network

IPv6

Internet protocol version 6

IPX

Internet Packet Exchange

IRF

Intelligent Resilient Framework

IS

Intermediate System

ISATAP

Intra-Site Automatic Tunnel Addressing Protocol

ISDN

Integrated Services Digital Network

IS-IS

Intermediate System-to-Intermediate System intra-domain routing information exchange protocol

ISO

International Organization for Standardization

ISP

Internet service provider

ISSU

In Service Software Upgrade

IST

Internal Spanning Tree

ITU-T

International Telecommunication Union - Telecommunication Standardization Sector

K                                                                                                                             Return

KB

Kilobyte

KEK

Key-encrypting key

L                                                                                                                             Return

L2TP

Layer 2 Tunneling Protocol

L2VPN

Layer 2 VPN

L3VPN

Layer 3 VPN

LACP

Link Aggregation Control Protocol

LACPDU

Link Aggregation Control Protocol Data Unit

LAN

Local Area Network

LCP

Link Control Protocol

LDAP

Lightweight Directory Access Protocol

LDP

Label Distribution Protocol

LER

Label Edge Router

LFIB

Label Forwarding Information Base

LIB

Label Information Base

LLC

Link Layer Control

LLDP

Link Layer Discovery Protocol

LOC

Loss of continuity

LOG

Call Logging

LR

Line Rate

LRTT

Loop Round Trip Time

LSA

Link State Advertisement

LSAck

Link State Acknowledgment

LSDB

Link State Database

LSP

Label Switch Path

LSPAGENT

Label Switched Path AGENT

LSPDU

Link State Protocol Data Unit

LSPM

Label Switch Path Management

LSR

Link State Request

LSR

Label Switch Router

LSR-ID

Label Switch Router Identity

LSU

Link State Update

M                                                                                                                             Return

MAC

Media Access Control

MAN

Metropolitan Area Network

MaxBC

Max Bandwidth Constraints

MBGP

Multiprotocol Border Gateway Protocol

MD

Multicast Domain

MDI

Medium Dependent Interface

MDT

Multicast Distribution Tree

MED

multi-exit discrimination (MED)

MIB

Management Information Base

MLD

Multicast Listener Discovery Protocol

MLD-Snooping

Multicast Listener Discovery Snooping

MMC

Meet-Me Conference

MODEM

MOdulator-DEModulator

MP

Multilink PPP

MP-BGP

Multiprotocol extensions for BGP-4

MPE

Middle-level PE

MP-group

Multilink Point to Point Protocol group

MPLS

Multiprotocol Label Switching

MPLSFW

Multi-protocol Label Switch Forward

MPM

Multicast Port Management

MSC

Mobile Switching Center

MSDP

Multicast Source Discovery Protocol

MSOH

Multiplex Section Overhead

MSTI

Multi-Spanning Tree Instance

MSTP

Multiple Spanning Tree Protocol

MT

Multicast Tunnel

MTBF

Mean Time Between Failure

MTI

Multicast Tunnel Interface

MTU

Maximum Transmission Unit

MVRF

Multicast VPN Routing and Forwarding

N                                                                                                                             Return

NAPT

Network Address Port Translation

NAS

Network Access Server

NAT

Net Address Translation

NBMA

Non Broadcast Multi-Access

NBT

NetBIOS over TCP/IP

NCP

Network Control Protocol

ND

Neighborhood discovery

NDA

NetStream Data Analyzer

NDC

Network Data Collector

NDP

Neighbor Discovery Protocol

NetBIOS

Network Basic Input/Output System

NHLFE

Next Hop Label Forwarding Entry

NLPID

Network Layer Protocol Identifier

NLRI

Network Layer Reachable Information

NMS

Network Management Station

NPDU

Network Protocol Data Unit

NPE

Network Provider Edge

NQA

Network Quality Analyzer

NSAP

Network Service Access Point

NSC

NetStream Collector

N-SEL

NSAP Selector

NSSA

Not-So-Stubby Area

NTDP

Neighbor Topology Discovery Protocol

NTP

Network Time Protocol

O                                                                                                                             Return

OAM

Operation Administration and Maintenance

OAMPDU

OAM Protocol Data Units

OC-3

OC-3

OID

Object Identifier

OL

Optical Line

OSI

Open Systems Interconnection

OSPF

Open Shortest Path First

P                                                                                                                             Return

P2MP

Point to MultiPoint

P2P

Point To Point

PAP

Password Authentication Protocol

PCB

Printed Circuit Board

PCM

Pulse Code Modulation

PD

Powered Device

PDU

Protocol Data Unit

PE

Provider Edge

PHP

Penultimate Hop Popping

PHY

Physical layer

PIM

Protocol Independent Multicast

PIM-DM

Protocol Independent Multicast-Dense Mode

PIM-SM

Protocol Independent Multicast-Sparse Mode

PIR

Peak Information Rate

PKCS

Public Key Cryptography Standards

PKI

Public Key Infrastructure

PMTU

Path MTU

PoE

Power over Ethernet

POP

Point Of Presence

POS

Packet Over SDH

PPP

Point-to-Point Protocol

PPTP

Point to Point Tunneling Protocol

PPVPN

Provider-provisioned Virtual Private Network

PQ

Priority Queuing

PRC

Primary Reference Clock

PRI

Primary Rate Interface

PS

Protection Switching

PSE

Power Sourcing Equipment

PSNP

Partial SNP

PVC

Permanent Virtual Channel

PW

Pseudo wires

Q                                                                                                                             Return

QACL

QoS/ACL

QinQ

802.1Q in 802.1Q

QoS

Quality of Service

QQIC

Querier's Query Interval Code

QRV

Querier's Robustness Variable

R                                                                                                                             Return

RA

Registration Authority

RADIUS

Remote Authentication Dial in User Service

RAM

random-access memory

RD

Routing Domain

RD

Router Distinguisher

RED

Random Early Detection

RFC

Request For comments

RIP

Routing Information Protocol

RIPng

RIP next generation

RM

Route management

RMON

Remote Monitoring

ROM

Read Only Memory

RP

Rendezvous Point

RPC

Remote Procedure Call

RPF

Reverse Path Forwarding

RPR

Resilient Packet Ring

RPT

Rendezvous Point Tree

RRPP

Rapid Ring Protection Protocol

RSB

Reservation State Block

RSOH

Regenerator Section Overhead

RSTP

Rapid Spanning Tree Protocol

RSVP

Resource ReserVation Protocol

RTCP

Real-time Transport Control Protocol

RTE

Route Table Entry

RTP

Real-time Transport Protocol

RTP

Real-time Transport Protocol

S                                                                                                                             Return

SA

Source Active

SBM

Subnetwork Bandwidth Management

SCFF

Single Choke Fairness Frame

SD

Signal Degrade

SDH

Synchronous Digital Hierarchy

SETS

Synchronous Equipment Timing Source

SF

Sampling Frequency

SFM

Source-Filtered Multicast

SFTP

Secure FTP

Share-MDT

Share-Multicast Distribution Tree

SIP

Session Initiation Protocol

Site-of-Origin

Site-of-Origin

SLA

Service Level Agreement

SMB

Standby Main Board

SMTP

Simple Mail Transfer Protocol

SNAP

Sub Network Access Point

SNMP

Simple Network Management Protocol

SNP

Sequence Number Packet

SNPA

Subnetwork Points of Attachment

SOH

Section Overhead

SONET

Synchronous Optical NETwork

SOO

Site-of-Origin

SP

Strict Priority Queueing

SPE

Superstratum PE/Sevice Provider-end PE

SPF

Shortest Path First

SPT

Shortest Path Tree

SSH

Secure Shell

SSM

Synchronization Status Marker

SSM

Source-Specific Multicast

ST

Shared Tree

STM-1

SDH Transport Module -1

STM-16

SDH Transport Module -16

STM-16c

SDH Transport Module -16c

STM-4c

SDH Transport Module -4c

STP

Spanning Tree Protocol

SVC

Signalling Virtual Connection

Switch-MDT

Switch-Multicast Distribution Tree

T                                                                                                                             Return

TA

Terminal Adapter

TACACS

Terminal Access Controller Access Control System

TDM

Time Division Multiplexing

TCP

Transmission Control Protocol

TE

Traffic Engineering

TEDB

TE DataBase

TFTP

Trivial File Transfer Protocol

TLS

Transparent LAN Service

TLV

Type-Length-Value

ToS

Type of Service

TPID

Tag Protocol Identifier

TRIP

Trigger RIP

TS

Traffic Shaping

TTL

Time to Live

TTY

True Type Terminal

U                                                                                                                             Return

UDP

User Datagram Protocol

UPE

Underlayer PE or User-end PE

URL

Uniform Resource Locators

URPF

Unicast Reverse Path Forwarding

USM

User-Based Security Model

V                                                                                                                             Return

VBR

Variable Bit Rate

VCI

Virtual Channel Identifier

VE

Virtual Ethernet

VFS

Virtual File System

VLAN

Virtual Local Area Network

VLL

Virtual Leased Lines

VOD

Video On Demand

VoIP

Voice over IP

VOS

Virtual Operate System

VPDN

Virtual Private Dial-up Network

VPDN

Virtual Private Data Network

VPI

Virtual Path Identifier

VPLS

Virtual Private Local Switch

VPN

Virtual Private Network

VRID

Virtual Router ID

VRRP

Virtual Router Redundancy Protocol

VSI

Virtual Switch Interface

VT

Virtual Tributary

VTY

Virtual Type Terminal

W                                                                                                                            Return

WAN

Wide Area Network

WFQ

Weighted Fair Queuing

WINS

Windows Internet Naming Service

WLAN

wireless local area network

WRED

Weighted Random Early Detection

WRR

Weighted Round Robin

WTR

Wait-to-Restore

WWW

World Wide Web

X                                                                                                                             Return

XGE

Ten-GigabitEthernet

Z                                                                                                                             Return

ZBR

Zone Border Router