Acronyms

1DM

One-way Delay Measurement

6PE

IPv6 Provider Edge router. An MPLS IPv4 core network that supports IPv6 domains which communicate over an IES service.

6VPE

IPv6 Provider Edge router with IP-VPN Services. An MPLS IPv4 core network that supports the communication using IPv6 VPRN services.

2G

Second-generation wireless telephone technology

3DES

Triple DES (data encryption standard)

3G

Third-generation mobile telephone technology

4G

Fourth-generation mobile telephone technology

5G

Fifth-generation mobile telephone technology

NSP NFM-P

Network Services Platform Network Functions Manager - Packet

1830 PSS

1830 Photonic Service Switch

7705 SAR

7705 Service Aggregation Router

7210 SAS

7210 Service Access Switch

7450 ESS

7450 Ethernet Service Switch

7705 SAR

7705 Service Aggregation Router

7705 SAR-Hm

7705 Service Aggregation Router (vSR-based)

7750 SR

7750 Service Router

7950 XRS

7950 eXtensible Routing System

AA

Application Assurance

AA-ISA

Application Aware Integrated Service Adapter

AAA

AA-Answer

AAL

ATM Adaptation Layer

AAL5

ATM Adaptation Layer 5

AAR

AA-Request

AARP

AA Redundancy Protocol

ABM

Asynchronous Balanced Mode

ABR

Area Border Router

Available Bit Rate

AC

Alternating Current

Attachment Circuit

ACA

Accounting-Answer

ACCM

Async-Control-Character-Map

ACFC

Address and Control Field Compression

ACH

Associated Channel

ACK

Acknowledgment

ACL

Access Control List, also called filter policy

ACR

Accounting-Request

Adaptive Clock Recovery

ADC

Application Detection and Control

ADI

Ad Insertion

ADI-LZ

Ad Insertion Local and Zoned

ADM

Add/Drop Multiplexer

ADP

Active Diameter Proxy

Automatic Discovery Protocol

AFI

Address Family Identifier

Authority and Format Identifier

AFTR

Address Family Transition Router

AGI

Address Group Identifier

AIGP

Accumulated IGP

AII

Attachment Individual Identifier

AIS

Alarm Indication Signal

ALE

Access-Loop-Encapsulation

ALG

Application-Level Gateway

ALMP

Auto-Learn-Mac-Protect

ALTO

Application Layer Traffic Optimiser

AMI

Alternate Mark Inversion

AN

Association Number

AMO

Any Mode of Operation

ANSI

American National Standards Institute

ANCP

Access Node Control Protocol

ANL

Access Network Location

API

Application Programming Interface

APN

Access Point Name

Apipe

ATM VLL

AP

Access Point

APN

Access Point Name

APS

Automatic Protection Switching

AQP

Application QoS Policies

ARFCN

Absolute Radio-Frequency Channel Number

ARP

Address Resolution Protocol

A/S

Active/Standby

AS

Autonomous System

ASAP

Any Service Any Port

ASAM

Advanced Services Access Manager

ASBR

AS Boundary Routers

ASID

Acct-Session-Id

ASM

Any-Source Multicast

ASN

Autonomous System Number

ASO

Application Service Option

AT

ATtention

ATM

Asynchronous Transfer Mode

AVP

Attribute Value Pair

B-bit

Beginning bit (first packet of a fragment)

BBF

Broadband Forum

BC

Bandwidth Constraint

BCB

Backbone Core Bridge

BCG

Burst Control Group

BCP

Bridging Control Protocol

B-DA

Backbone Destination MAC Address

BEB

Backbone Edge Bridge

BECN

Backward Explicit Congestion Notification

Bellcore

Bell Communications Research

BER

Basic Encoding Rules

BER

Bit Error Rate

BERT

Bit Error Rate Test

BFD

Bi-directional Forwarding Detection

BGP

Border Gateway Protocol

BITS

Building Integrated Timing Source

Building Integrated Timing Supply

B-MAC

Backbone source and destination MAC address fields defined in the 802.1ah provider MAC encapsulation header

BMCA

Best Master Clock Algorithm

BMU

Broadcast, Multicast, and Unknown traffic

BNG

Broadband Network Gateway

BOF

Boot Option File

BOOTP

Bootstrap Protocol

BPDU

Bridge Protocol Data Unit

BPG or BPGRP

Bundle Protection Group

BR

Border Router

BRAS

Broadband Remote Access Server

BRG

Bridged Residential Gateway

BSA

Broadband Service Aggregator

BSAN

Broadband Service Access Node

BSC

Base Station Controller

BSD

Berkeley Software Distribution

BSM

Basic Subscriber Management

BSR

Bootstrap Router

Broadband Service Router

BTS

Base Transceiver Station

BTSH

BGP TTL Security Hack

BTV

Broadcast Television

BUM

Broadcast, Unicast unknown and Multicast

B-VPLS

Backbone VPLS

BVID

Backbone VLAN ID

BVPLS

See B-VPLS

BVS

Business VPN Service

BW

Bandwidth

CA

Certificate Authority

Connectivity Association

CAC

Call Admission Control

CAK

Connectivity Association Key

CAM

Content Addressable Memory

CAS

Channel Associated Signaling

CBC

Cipher Block Chaining

CBF

Class-Based Forwarding

CBR

Constant Bit rate

CBRS

Citizens Broadband Radio Systems

CBS

Committed Buffer Size

Committed Buffer Space

Committed Burst Size

CC

Content of Communication

Continuity Check

Control Channel

CCA

Credit Control Answer

Cross Connect Adapter

CCA-I

Credit Control Answer-Initial

CCA-T

Credit Control Answer-Terminate

CCA-U

Credit Control Answer-Update

CCAG

Cross Connect Aggregation Group

CCFH

Credit Control Failure Handling

CCID

Cross Connect Identifier

CCM

Chassis Control Module

Continuity Check Message

CCR

Credit Control Request

CCR-I

Credit Control Request-Initiate

CCR-T

Credit Control Request-Terminate

CCR-U

Credit Control Request-Update

CCS

Common Channel Signaling

CDMA

Code Division Multiple Access

CDN

Call Disconnect Notify

CDP

Cisco Discovery Protocol

CDVT

Cell Delay Variation Tolerance

CE

Circuit Emulation

Customer Edge

Customer Equipment

CEA

Capability Exchange Answer

CEC

Circuit Emulation Concentrator

CEM

Circuit-Emulation

CER

Capability Exchange Request

CES

Circuit Emulation Services

CESoPSN

Circuit Emulation Services over Packet Switched Network

CF

Compact Flash

CFHP

Class Fair Hierarchical Policing

CFM

Connectivity Fault Management

Control Forwarding Module

CFP

C form-Factor Pluggable

CGA

Cryptographically Generated Address

CGI

Cell Global Identification

CGN

Carrier Grade NAT

CHAP

Challenge Handshake Authentication Protocol

cHDLC

Cisco High-Level Data Link Control protocol

CHLI

Consecutive High Loss Intervals

CHV1

Card Holder Verification

CIDR

Classless Inter-Domain Routing

CIR

Committed Information Rate

CIST

Common and Internal Spanning Tree

CKN

Connectivity association Key Name

CLEI

Common Language Equipment Identification

CLI

Command Line Interface

CLLI

Common Language Location Identifier

CLP

Cell Loss Priority

CMA

Compact Media Adapter

CMAC

Customer MAC

CMP

Certificate Management Protocol

CMTS

Cable Modem Termination System

CO

Central Office

CoA

Change of Authorization

confed-EBGP

Confederation External BGP

CoS

Class of Service

CP

Connection-Profile

CPE

Customer Premises Equipment

Cpipe

Circuit Emulation Pipe

CPM

Control Processing Module

CP/SFM

Control Processor/Switch Fabric Module

CPU

Control Processing Unit

CRC

Cyclic Redundancy Check

CRC-32

32-bit Cyclic Redundancy Check

CRL

Certificate Revocation List

CRMF

Certificate Request Message Format

CRON

a time-based scheduling service (from chronos = time)

CRP

Candidate RP

CSC

Carrier Supporting Carrier

CSC-CE

Carrier Supporting Carrier – Customer Edge Router

CSC-PE

Carrier Supporting Carrier – Provider Edge Router

CSF

Client Signal Fail

CSM

Control and Switching Module

CSN

Complete Sequence Number

CSNP

Complete Sequence Number PDU

CSP

Cloud Service Provider

CSPF

Constraint-based Shortest Path First

CSR

Cellsite Service Router

CSU

Channel Service Unit

CSV

Certificate Status Verification

C-TAG

Customer VLAN tag

CV

Connection Verification

Customer VLAN (tag)

CVID

Customer VLAN ID

CW

Control Word

DACS

Digital Access Cross-connect System

DAD

Duplicate Address Detection

DA/FAN

Distribution Automation/Field Area Network

DC

Direct Current

DCCA

Diameter Credit Control Application

DCD

Data Carrier Detect

DCE

Data Circuit-terminating Equipment

Data Communications Equipment

DCI

Client Defect Clear Indication

Data Center Interconnect

DCP

Distributed CPU Protection

DCSC

Digital Channel Switch Capable

DDM

Digital Diagnostics Monitoring

DDMAP

Downstream Detailed Mapping

DDoS

Distributed DoS

DDP

Dynamic Data Persistency

DDR

Dial On Demand Routing

DDS

Dynamic Data Services

DE

Discard-Eligible

DEM

Dynamic Experience Management

DES

Data Encryption Standard

DEI

Drop Eligibility Indicator

DER

Distinguished Encoding Rules

DF

Delivery Function

Do not Fragment

DF

Designated Forwarder

DH

Diffie-Hellman

DHB

Decimal, Hexadecimal, or Binary

DHCP

Dynamic Host Configuration Protocol

DHCPv6

Dynamic Host Configuration Protocol for IPv6

DHT

Distributed Hash Protocol

DLC

Data Link Control

DLCI

Data Link Connection Identifier

DLCMI

Data Link Connection Management Interface

DM

Delay Measurement

DMM

Delay Measurement Message

DMR

Delay Measurement Reply

DN

Domain Name

DNAT

Destination-based Network Address Translation

DNS

Domain Name System

DNSSEC

DNS Security

DNU

Do Not Use

DOD

Downstream On Demand

DORA

Discovery/Offer/Request/Ack

DoS

Denial of Service

dot1p

IEEE 802.1p bits, in Ethernet or VLAN ingress packet headers, used to map traffic to up to eight forwarding classes

dot1q

IEEE 802.1q encapsulation for Ethernet interfaces

DPA

Disconnect Peer Answer

DPD

Dead Peer Detection

DPI

Digital Program Insertion

DPL

Delegated Prefix Length

DPLL

Digital Phase Locked Loop

DPR

Disconnect Peer Request

DPV

Designated Priority Vector

DR

Designated Router

DRA

Diameter Routing Agent

DRM

Digital Rights Management

DSA

Digital Signal Algorithm

Direct System Agent

DSAP

Destination Service Access Point

DSC

Dynamic Services Controller

DSCP

Differentiated Services Code Point

DSFS

Data SAP Forwarding State

DSL

Digital Subscriber Line

DSLAM

Digital Subscriber Line Access Multiplexer

DSM

Distributed Subscriber Management

DSMAP

Downstream Mapping

DSS

Digital Signature Standard

DTC

DHCP Transaction Cache

DTD

Dynamic Topology Discovery

DTE

Data Terminal Equipment

DTP

Digital Trunking Protocol

DU

Downstream Unsolicited

DUID

DHCP Unique Identifier

DUS

Do not Use for Synchronization

DVB

Digital Video Broadcasting

DVMRP

Distance Vector Multicast Routing Protocol

DWA

Device Watchdog Answer

DWDM

Dense Wavelength Division Multiplexing

DWR

Device Watchdog Request

e2e

End-to-End

EAP

Extensible Authentication Protocol

EAPOL

EAP over LAN

E-bit

Ending bit (last packet of a fragment)

eBGP or EBGP

External Border Gateway Protocol

EBS

Error Burst Size

E-BSR

Elected BSR

ECID

Emulated Circuit Identifiers

ECGI

E-UTRAN Cell Global Identifier

ECMP

Equal Cost Multipath

ECT

Equal Cost Tree

EEPROM

Electronically Erasable Programmable Read-Only Memory

EFCI

Explicit Forward Congestion Indication

EFEC

Enhanced Forward Error Correction

EFH

Extended Failure Handling

EFM

Ethernet in the First Mile

EGP

Exterior Gateway Protocol

EHS

Event Handling System

EIC

Ethernet Interface Counters

EIGRP

Enhanced Interior Gateway Routing Protocol

EIR

Excess Information Rate

E-LAN

Ethernet Local Area Network

eLER

Egress Label Edge Router

E-Line

Ethernet Virtual Private Line

eLMI

Ethernet Local Management Interface

EMR

Efficient Multicast Replication

EMS

Enhanced Subscriber Management

eNB

Evolved Node B

EOOL

End of Options List

EOM

End-of-Message

EOR

End-of-RIB

EPC

Evolved Packet Core

EPD

Ethernet Port Damping

Epipe

Ethernet Pipe

Ethernet VLL

EPL

Ethernet Private Line

EPS

Equipment Protection Switching

ERO

Explicit Router Object

ERP

Ethernet Ring Protection

ES

Elementary Stream

ESF

Extended Super Frame

ESI

Ethernet Segment Identifier

ESM

Enhanced Subscriber Management

ESMC

Ethernet Synchronization Messaging Channel

ESN

Electronic Serial Number

ESP

Encapsulating Security Payload

ESR

Extended Services Router

ETE

End-to-End

ETH

Ethernet

ETH-CFM

Ethernet Configuration and Fault Management

Ethernet Connectivity Fault Management (IEEE 802.1ag)

ETH-TST

Ethernet Test

ETR

Extended Temperature Range

ETSI

European Telecommunications Standards Institute

ETYPE

EtherType

EUI-64

64-bit Extended Unique Identifier

EVC

Ethernet Virtual Connections

EVI

EVPN Instance

EVPL

Ethernet Virtual Private Link

EVPN

Ethernet VPN

EXEC

Execute

EXP bits

Experimental bits (currently known as TC)

FAP

Femto Access Point

FASTE

FastE SFP type

FC

Forwarding Class

FCC

Fast Channel Change

FCS

Frame Check Sequence

FD

Frame Delay

Frequency Diversity

FDB

Forwarding Database

FDDI

Fiber Distributed Data Interface

FDI

Forward Defect Indication

FDL

Facilities Data Link

FDR

Frame Delay Range

FEAC

Far-End Alarm and Control

FEBE

Far-End Block Error

FEC

Forwarding Equivalence Class

Forward Error Correction

FECN

Forward Explicit Congestion Notification

FENT

Fast Ethernet Network Termination

FEPL

Far-End Protection-Line

FF

Fixed Filter

FIB

Forwarding Information Base

FID

Forwarding ID

FIFO

First In, First Out

FIN

Finish Bit Set

FIPS

Federal Information Processing Standards

FIR

Fair Information Rate

FIX

Financial Information eXchange

FLR

Frame Loss Ratio

FOM

Figure of Merit

FPE

Forwarding Path Extension

FPGA

Field Programmable Gate Array

Fpipe

Frame-Relay VLL

F-PLMN

Forbidden PLMN

FPP

Floor Packet Percentage

FPRI

Fine-grained Priority

FQDN

Fully Qualified Domain Name

FQF

Fully Qualified Flows

FR

Frame Relay

FRG

Fragmentation bit

FRR

Fast Reroute

FSG

Fate Sharing Group

FSM

Finite State Machine

FTN

FEC-to-NHLFE

FTP

File Transfer protocol

FTTH

Fiber to the Home

G-ACh

Generic Associated Channel

GAL

Generic ACH Label

GARP

Gratuitous ARP

GBMAC

Group BMAC

GBR

Guaranteed Bit Rate

GFEC

G.709 FEC

GFP

Generic Framing Procedure

GGSN

Gateway GPRS Support Node

GID

Global-ID

GigE

Gigabit Ethernet

GIGE

GigE SFP type

GIGX

GigX SFP

gLSP

GMPLS LSP

GMPLS

Generalized Multi-Protocol Label Switching

GMR

IGMP Group-specific Membership Report

GMRE

GMPLS Routing Engine

GNSS

Global Navigation Satellite System

GOP

Group of Pictures

GPON

Gigabit Passive Optical Network

GPRS

General Packet Radio Service

GPS

Global Positioning System

GR

Graceful Restart

Guaranteed Restoration

GRACE

Graceful restart

GRE

Generic Routing Encapsulation

GRT

Global Routing Table

GSMP

General Switch Management Protocol

GSU

Granted Service Unit

GTP

GPRS Tunneling Protocol

GUA

Global Unicast Address

GVRP

GARP VLAN Registration Protocol

HA

High Availability

HD

High Definition

HDLC

High-level Data Link Control protocol

HEC

Header Error Control

HGW

Home Gateway

HLI

High Loss Interval

HLR

Home Location Register

HMAC

Hash-based Message Authentication Code

Hash Message Authentication Code

HLE

Home LAN Extension

H-OFS

Hybrid OpenFlow Switch

H-POL

Hierarchical Policing

H-QoS

Hierarchical Quality of Service

HSDPA

High-Speed Downlink Packet Access

HSDSL

High Speed Digital Subscriber Line

HSI

High Speed Internet

HSMDA

High Scale MDA

HSPA

High-Speed Packet Access

HSS

Home Subscriber Service

HTTP

Hyper-Text Transfer Protocol

HTTPS

HTTP Secure

HVPLS

Hierarchical Virtual Private Line Service

IAD

Integrated Access Device

IAID

Identity Association Identification

IANA

Internet Assigned Numbers Authority

IA-NA

Identity Association for Non-Temporary Addresses

IA-PD

Identity Association for Prefix Delegation

IAPP

Inter Access Point Protocol

IBGP

Interior Border Gateway Protocol

IBN

Isolated Bonding Network

IB-RCC

In-Band Ring Control Connection

ICAP

Internet Content Adaptation Protocol

ICB

Inter-Chassis Backup

ICC

Inter-Card Communication

ICCID

Integrated Circuit Card Identifier

ICCN

Incoming Call Connected

ICK

Integrity Connection Value Key

ICL

Inter-Chassis Link

ICMP

Internet Control Message Protocol

ICMPv6

Internet Control Message Protocol for IPv6

ICP

IMA Control Protocol

ICRQ

Incoming Call Request

ICV

Integrity Connection Value

Integrity Check Value

IDi

Identification Indicator (an IKEv2 protocol payload)

IDr

Identification Responder

IDS

Intrusion Detection System

IDU

InDoor Unit

IEEE

Institute of Electrical and Electronics Engineers

I-ES

Interconnect Ethernet-Segment

IES

Internet Enhanced Service

IETF

Internet Engineering Task Force

IFDV

InterFrame Delay Variation

IFF

Inbound FEC Filtering

IFG

Inter-Frame Gap

IGD

Internet Gateway Device

IGH

Interface Group Handler

IGMP

Internet Group Management Protocol

IGP

Interior Gateway Protocol

IGRP

Interior Gateway Routing Protocol

IID

Instance ID

IIH

IS-IS Hello

IIN

Issuer Identification Number

IKE

Internet Key Exchange

iLDP

Interface Label Distribution Protocol

ILER

Ingress Label Edge Router

ILM

Incoming Label Map

ILMI

Integrated Local Management Interface

IMA

Inverse Multiplexing over ATM

IME

Interface Management Entity

IMEI

International Mobile Equipment Identity

IMEISV

International Mobile Equipment Identity and its Software Version

IMET

Inclusive Multicast Ethernet Tag

IMM

Integrated Media Module

IMPM

Ingress Multicast Path Management

IMSI

International Mobile Subscriber Identification

IOM

Input/Output Module

IOTA

Internet Over the Air (CDMA)

IP

Internet Protocol

IP-CAN

IP Connectivity Access Network

IPCC

IP Communication Channel

IP Control Channel

IPCP

Internet Protocol Control Protocol

IPFIX

IP Flow Information Export

IPG

Inter-Packet Gap

Ipipe

IP Pipe

IP Interworking VLL

IPL

IP Length

I-PMSI

Inclusive Provider Multicast Service Interface

IPOE

IP over Ethernet

IPS

Intrusion Prevention System

IPsec

IP Security

IPTV

Internet Protocol Television

IP-VPN

Internet Protocol Virtual Private Network

IRB

Integrated Routing and Bridging

IRI

Intercept Related Information

ISA

Integrated Service Adapter

ISA-AA

Integrated Service Adapter - Application Assurance

ISAKMP

Internet Security Association and Key Management Protocol

ISAM

Intelligent Services Access Manager

ISID

I-component Service ID

I-Service Instance Identifier

IS-IS

Intermediate System to Intermediate System

ISO

International Organization for Standardization

ISP

Internet Service Provider

ISSU

In-Service Software Upgrade

IST

Internal Spanning Tree

I-TAG

Service Instance TAG

ITU-T

International Telecommunications Union - Telecommunications

IWF

Interworking Function

JID

JabberID

JOLT

Java OnLine Transactions

JP

Join Prune

KAT

Keepalive Timer

KPI

Key Performance Indicators

L2TP

Layer 2 Tunneling Protocol

LA

Location Area

LAA

Local Address Assignment

LAC

L2TP Access Concentrator

LACP

Link Aggregation Control Protocol

LAG

Link Aggregation Group

LAI

Local Area Identity

L-AIS

Line Alarm Indication Signal

LAN

Local Area Network

LAND

Local Area Network Denial

LB

Label Base

Loopback

LBM

Loopback Message

LBR

Loopback Reply

Loopback Response

LCD

Loss of Cell Delineation

LCP

Link Control Protocol

LDAP

Lightweight Directory Access Protocol

LDAPS

LDAP over SSL/STL

LDP

Label Distribution Protocol

LDPoRSVP

LDP over RSVP

LDRP

Lightweight DHCPv6 Relay Agent

LER

Label Edge Router

LFA

Loop-Free Alternate

LFI

Link Fragmentation and Interleaving

LIB

Label Information Base

LIF

Loss of IMA Frame

LIG

Lawful Intercept Gateway

LLA

Link Local Address

LLC

Link Layer Control

Logical Link Control

LLDP

Link Layer Discovery Protocol

LLDPDU

Link Layer Discovery Protocol Data Unit

LLF

Link Loss Forwarding

LLGR

Long Lived Graceful Restart

LLID

Loopback Location ID

LM

Loss Measurement

LMM

Loss Measurement Message

LMI

Local Management Interface

LMR

Loss Measurement Response

LMP

Link Management Protocol

LNS

L2TP Network Server

LOC

Loss of Continuity

LODS

Link Out of Delay Synchronization

LOF

Loss of Frame

LOP

Loss of Packets

LOS

Loss of Signal

LoT

Loss of Transmission

LPM

Longest Prefix Match

LPN

Label per Next hop

LPP

Label per Prefix

LPT

Logical Port Type

LPT-S

Logical Port Type Subtype

LPT-V

Logical Port Type Value

LQR

Link Quality Report

LR

Label Route

LSA

Link-State Advertisement

LSB

Least Significant Bit

LSDB

Link-Sate Database

LSN

Large-Scale NAT

LSP

Link-State PDU (for IS-IS)

Label-Switched Path

LSR

Link-state Request

Label Switch Router

LSU

Link-State Update

LT

Linktrace

LTE

Line Termination Equipment

Long Term Evolution

LTM

Linktrace Message

LTN

LSP ID to NHLFE

LTR

Linktrace Reply

Linktrace Response

LTS

L2TP Tunnel Switching

LUB

Limit Unused Bandwidth

LUDB

Local User Data Base

MA

Maintenance Association

MA-ID

Maintenance Association Identifier

MAC

Media Access Control

MACsec

Media Access Control Security

MAF

Management Access Filter

MAM

Maximum Allocation Model

MAN

Metropolitan Area Network

MAR

Mobile Aggregation Router

MAT

MAC Address translation

MBB

Make-Before-Break

MBGP

Border Gateway Protocol with Multi-protocol extensions

MBH

Mobile BackHaul

MBR

Maximum Bit Rate

MBS

Maximum Buffer Size

Maximum Burst Size

Media Buffer Space

MBZ

Must Be Zero

MCAST

Multicast

MC-APS

Multi-Chassis Automatic Protection Switching

MC-CTL

Multi-Chassis Control Link

MC-EP

Multi-Chassis Endpoint

MC-IPSec

Multi-Chassis IPSec redundancy

MC-LAG

Multi-Chassis Link Aggregation

MC-MLPPP

Multi-Chassis Multilink Point-to-Point Protocol

Multi-Class Multilink Point-to-Point Protocol

MCAB

Maximum Configurable ATM Bandwidth

MCAC

Multicast Connection Admission Control

MCC

Mobile Country Code

MCLT

Maximum Client Lead Time

MCM

MDA Carrier Module

MCR

Mobile Core Router

MC-RING

Multi-Chassis Ring

MCS

Multi-Chassis Synchronization

MD

Maintenance Domain

MD5

Message Digest version 5 (algorithm)

MDA

Media Dependent Adapter

MDI

Media Dependent Interface

MDL

Maintenance Data Link

MDN

Mobile Directory Number

MDT

Multicast Distribution Tree

MDU

Multiple Dwelling Unit

MDX

Media Dependent Interface with crossovers

ME

Maintenance Entity

MED

Multi-Exit Discriminator

MEF

Metro Ethernet Forum

MEG

Maintenance Entity Group

MEP

Maintenance Association Endpoint

Maintenance Endpoint

MEP-ID

Maintenance Association Endpoint Identifier

MFD

Mean Frame Delay

MFIB

Multicast Forwarding Information Base

MHD

Multi-Homed Device

MHF

MIP Half Function

MHN

Multi-Homed Network

MHV

Mirror Header Version

MI

Member Identifier

MIB

Management Information Base

MIMO

Multiple Input/Multiple Output

MIMP

MC-IPSec Mastership Protocol

MIP

Maintenance Domain Intermediate Point

Maintenance Intermediate Points

MIR

Minimum Information Rate

MKA

MACSec Key Agreement

MLD

Multicast Listener Discovery

MLDP

Multicast Label Distribution Protocol

MLFR

Multi-Link Frame Relay

MLPPP

Multilink Point-to-Point Protocol

MME

Mobility Management Entity

MLT

Multi-Link Trunk

MMRP

Multiple MAC Registration Protocol

MNC

Mobile Network Code

MNO

Mobile Network Operator

MOP

Maintenance Operational Procedure

MOS

Mean Opinion Score

MP

Merge Point

Multilink Protocol

MPBGP

Multi-Protocol Border Gateway Protocol

MPLS

Multiprotocol Label Switching

MPLS-TP

Multiprotocol Label Switching - Transport Profile

MPLSCP

Multiprotocol Label Switching Control Protocol

MPTS

Multi-Program Transport Stream

MRAI

Minimum Route Advertisement Interval

MRIB

Multicast Routing Information Base

MRP

Multi-service Route Processor

MRRU

Maximum Received Reconstructed Unit

MRU

Maximum Receive Unit

MSAN

Multi-Service Access Node

MSAP

Managed Service Access Point

MSB

Most Significant Bit

MSCC

Multiple Services Credit Control

MSDP

Multicast Source Discovery Protocol

MSDU

MAC Service Data Unit

MSFP

Multicast Switch Fabric Plane

MSID

Mobile Station Identifier

MSIN

Mobile Subscriber Identification Number

MS-ISM

Multi-Service Integrated Services Module

MSK

Master Session Key

MS-PW

Multi-Segment Pseudowire

MSR

Mobile Service Router

MSS

Multi-Service Site

Maximum Segment Size

MSTI

Multiple Spanning Tree Instances

MSTP

Multiple Spanning Tree Protocol

MSTV

Microsoft Television

MTBF

Mean Time Between Failures

MTSO

Mobile Telephony Switching Office

MTTR

Mean Time To Repair

MTU

Multi-Tenant Unit

Maximum Transmission Unit

M-VPLS

Management Virtual Private Line Service

MVPN

Multicast VPN

MVR

Multicast VPLS Registration

MVRP

Multiple VLAN Registration Protocol

NAPT

Network Address and Port Translation

NAS

Network Access Server

NAT

Network Address Translation

NBMA

Non-Broadcast Multiple Access network

NBNS

NetBios Name Server

NDF

Non-Designated Forwarder

NET

Network Entity Title

NETCONF

Network Configuration Protocol

NG-MVPN

Next-Generation Multicast VPN

NGE

Network Group Encryption

NH

Next-Hop

NHLFE

Next-Hop Label Forwarding Entry

NHOP

Next-Hop

NID

Network Interface Demarcation

NIST

National Institute of Standards and Technology

NLPID

Network Level Protocol Identifier

NLRI

Network Layer Reachability Information

NMS

Network Management System

NNI

Network-to-Network Interface

NPA

Network Processor Array

NPAT

Network and Port Address Translation

NRT-VBR

Non-Real-Time Variable Bit Rate

NSAP

Network Service Access Point

NSH

Next Signaling Hop

NSP

Network Services Platform

NSR

Nonstop Routing

NSSA

Not-So-Stubby Area

NTP

Network Time Protocol

NVE

Network Virtualization Edge

OAM

Operation, Administration and Management

OAMPDU

OAM Protocol Data Units

OC3

Optical Carrier level 3

OCD

Out-of-Cell Delineation

OCS

Online Charging Server

OCSP

Online Certificate Status Protocol

ODSA

On-Demand Subnet Allocation

OF

OpenFlow

OFS

OpenFlow Switch

OID

Object Identifier

OIF

Outgoing Interfaces

OIL

Outgoing Interface List

OLT

Optical Line Termination

OMCR

Oversubscribed Multi-Chassis Redundancy

ONT

Optical Network Terminal

OOB

Out-of-Band

OOP

Out-of-Profile

OPDL

Option Data structure List

OPS

On-Path Support

ORF

Outbound Route Filtering

ORR

Optimal Route Reflection

OS

Operating System

OSF

Oversubscription Factor

OSI

Open Systems Interconnection (reference model)

OSINLCP

OSI Network Layer Control Protocol

OSPF

Open Shortest Path First

OSPF-TE

OSPF-Traffic Engineering (extensions)

OSS

Operations Support System

OTASP

Over the Air Services Provisioning (CDMA)

OTN

Optical Transport Network

OTU

Optical Transport Unit

OWAMP

One-Way Active Measurement Protocol

OXC

Optical Cross-connect

P2MP

Point-to-Multipoint

PAA

PDN Address Allocation

PADI

PPPoE Active Discovery Initiation

PADO

PPPoE Active Discovery Offer

PADR

PPPoE Active Discovery Request

PADS

PPPoE Active Discovery Session-confirmation

PADT

PPPoE Active Discovery Terminate

PAE

Port Authentication Entities

PAGP

Port Aggregation Protocol

PAP

Password Authentication Protocol

PASTE

Provider Architecture for Differentiated Services and Traffic Engineering

PBB

Provider Backbone Bridging

PBF

Policy-Based Forwarding

PBO

Packet-Byte-Offset

PBR

Policy-Based Routing

PBT

Port-Based Timestamping

PCC

Path Computation Element Client

PCC

Policy and Charging Control

PCE

Path Computation Element

PCEF

Policy and Charging Enforcement Function

PCEP

Path Computation Element Protocol

PCM

Pulse Code Modulation

PCO

Protocol Configuration Options

PCP

Priority Code Point

PCR

Peak Cell Rate

Proprietary Clock Recovery

PCRF

Policy and Rule Charging Function

PDN

Packet Data Network

PDP

Packet Data Protocol

PDU

Protocol Data Units

PDV

Packet Delay Variation

PE

Provider Edge Router

PFC

Protocol Field Compression

PFS

Perfect Forward Secrecy

PFSG

Pool Fate Sharing Group

PHB

Per-Hop Behavior

PHP

Penultimate Hop Popping

PHY

Physical layer

PIC

Prefix Independent Convergence

PID

Packet Identifier

Protocol Identifier

PIM

Protocol Independent Multicast

PIM-DM

Protocol Independent Multicast-Dense Mode

PIM-SM

Protocol Independent Multicast – Sparse Mode

PIN

Personal Identification Number

PIP

Picture-in-Picture

PIR

Peak Information Rate

PKI

Public Key Infrastructure

PLMN

Public Land Mobile Network

PLR

Point of Local Repair

PMSI

P-Multicast Service Interface

PMSTP

Provider Multi-Instance Spanning Tree Protocol

PMT

Program Map Table

PN

Packet Number

POA

Program Off Air

POI

Purge Originator Identification

PON

Passive Optical Network

POP

Points of Presence

POS

Packet over SONET

PPID

Payload Protocol Identifier

PPP

Point-to-Point Protocol

PPPOE

Point-to-Point Protocol over Ethernet

PPS

Packets per Second

PPTP

Point-to-Point Tunneling Protocol

PRC

Path Restoration Combined

Primary Reference Clock

PRF

Pseudorandom Function

PRI

Packet Priority

PSB

Path State Block

PSC

Protection Switching Coordination

PSCP

Programmable Subscriber Configuration Policy

PSD

Protection Switching Duration

PSI

Payload Structure Identifier

PSK

Pre-Shared Key

PSM

Peer State Machine

PSN

Packet-Switched Network

PSNP

Partial Sequence Number PDU

PTA

PMSI Tunnel Attribute

PPP Termination Aggregation

PTB

Packet Too Big

P-TMSI

packet TMSI

PTP

Performance Transparency Protocol

Precision Time Protocol

PUK

Personal Unblocking Code

PVC

Permanent Virtual Circuit

PVCC

Permanent Virtual Channel Connection

PVST

Per VLAN STP

PW

Pseudowire

PWE

Pseudowire Emulation

PWE3

Pseudowire Emulation Edge-to-Edge

PXC

Port Cross-Connect

Q.922

ITU-T Q-series Specification 922

QCI

QoS Class Identifier

QL

Quality Level

QoS

Quality of Service

QPPB

QoS Policy Propagation via BGP

QSFP

Quad Small Form-factor Pluggable

RAA

Re-Authentication Answer

RADIUS

Remote Authentication Dial In User Service

RAI

Routing Area Identity

RAM

Reporting and Analysis Manager

RAN

Radio Access Network

R-APS

Ring Automatic Protection Switching

RAR

Re-Authentication Request

RC

Result Code

RCO

Routed Central Office

RD

Route Distinguisher

RDI

Remote Defect Indication

RDM

Russian Doll Model

RDNSS

Recursive DNS Server

RED

Random Early Discard

RESV

Reservation

RET

Retransmission

RFD

Route Flap Damping

RG

Routed Gateway

RGW

Residential Gateway

RIB

Routing Information Base

RIP

Routing Information Protocol

RNC

Radio Network Controller

RNCV

Ring Node Connectivity Verification

ROA

Route Origin Authorization

RP

Rendezvous Point

RPC

Remote Procedure Call

RPA

RP Address

RPF

Reverse Path Forwarding

RPL

Ring Protection Link

RPS

Radio Protection Switching

RR

Reporting Reason

Route Reflector

RRC

Radio Resource Control Protocol

RRO

Record Route Object

RSA

Rivest, Shamir, and Adleman (authors of the RSA encryption algorithm)

RSB

Reservation State Block

RSC

Return Sub-Code

RSCP

Received Signal Code Power

RSHG

Residential Split Horizon Group

RSSI

Received Signal Strength Indicator

RSTP

Rapid Spanning Tree Protocol

RSU

Requested Service Unit

RSVP

Resource Reservation Protocol

RSVP-TE

Resource Reservation Protocol – Traffic Engineering

RT

Receive/Transmit

RT-VBR

Real-Time Variable Bit Rate

RTCP

RTP Control Protocol

RTM

Routing Table Manager

RTMP

Real-Time Messaging Protocol

RTMPE

Encrypted Real Time Messaging Protocol

RTMPT

Tunneled Real Time Messaging Protocol

RTP

Real-Time Transport Protocol

RTSP

Real-Time Streaming Protocol

RVPLS

Routed Virtual Private LAN Service

S2L

Source-to-leaf

S-A

Source-Active

SA

Security Association

SAA

Service Assurance Agent

SAC

State Advertisement Control

SAFI

Subsequent Address Family Identifier

SAI

Service Area Identity

Secure Association Identifier

SAII

Source Access Individual Identifier

Source Attachment Individual Identifier

SAK

Security Association Key

SAP

Service Access Point

Subscriber Access Point

SASE

Stand Alone Synchronization Equipment

SAToP

Structure-Agnostic TDM over Packet

SBAU

Shared Buffer Average Utilization

SBR

Source-Based Reroute

SBU

Shared Buffer Utilization

SC

Security Channel

SCI

Secure Channel Identifier

SCP

Secure Copy

SCR

Sustained Cell Rate

SCTE

Society of Cable Telecommunications Engineers

SCUR

Session Charging with Unit Reservation

SD

Signal Degrade

Space Diversity

SDH

Synchronous Digital Hierarchy

SDN

Software Defined Network

SDP

Service Destination Point

Service Distribution Point

SE

Shared Explicit

SecTAG

Security TAG

SecY

MAC Security Entity

SeGW

Secure Gateway

SeND

Secure Neighbor Discovery

SETS

Synchronous Timing Equipment Subsystem

SF

Signal Fail

SFF

Small Form Factor

SFM

Switch Fabric Module

SFP

Small Form-factor Pluggable (transceiver)

SGSN

Serving GPRS Support Node

SHA

Secure Hash Algorithm

SHCV

Subscriber Host Connectivity Verification

SHG

Split Horizon Group

SI

Strategic Industries

SID

Segment ID

SIM

Subscriber Identification Module

SIP

Session Initiation Protocol

SIR

Sustained Information Rate

SL

Synthetic Loss

Short Length

SLA

Service Level Agreement

SLAAC

Stateless Address Auto-Configuration

SLARP

Serial Line Address Resolution Protocol

SLIP

Serial Line Internet Protocol

SLM

Synthetic Loss Message

SLR

Synthetic Loss Reply

SMGR

Service Manager

SNAPT

Source Network Address and Port Translation

SNCP

Sub-Network Connection Protection

SNI

Server Name Indicator

SNMP

Simple Network Management Protocol

SNPA

Subnetwork Point of Attachment

SNR

Signal to Noise Ratio

SNTP

Simple Network Time Protocol

SOAM

Service OAM

SONET

Synchronous Optical Network

SOO

Site of Origin

SPB

Shortest Path Bridging

SPBM

Shortest Path Bridging MAC Mode

SPF

Shortest Path First

SPI

Security Parameter Index

S-PMSI

Selective Provider Multicast Service Interface

SPT

Shortest Path Tree

SR

Segment Routing

Service Router (7750 SR)

SRGB

Segment Routing Global Block

SRLG

Shared Risk Link Group

SRRP

Subscriber Routed Redundancy Protocol

SR-MS

Segment Routing Mapping Server

SR-TE

Segment Routing Traffic Engineering

SSD

Solid State Drive

SSH

Secure Shell

SSL

Secure Socket Layer

SSM

Source-Specific Multicast

Synchronization Status Messages

Synchronization Status Messaging

SSRC

Synchronization Source

SSU

System Synchronization Unit

Synchronization Supply Unit

STA

Session-Termination-Answer

S-TAG

Service VLAN tag

STB

Set Top Box

STM1

Synchronous Transport Module, level 1

STP

Spanning Tree Protocol

STR

Session-Termination-Requests

SVC

Switched Virtual Circuit

SVID

Stacked VLAN ID

SYN

Synchronize

TAC

Technical Assistance Center

TACACS+

Terminal Access Controller Access-Control System Plus

TAF

Time Average Factor

TAII

Target Attachment Individual Identifier

TC

Traffic Class (formerly known as EXP bits)

TCA

Threshold Crossing Alert

Traffic Crossing Alert

TCI

TAG Control Information

TCN

Topology Change Notification

TCP

Transmission Control Protocol

TCSB

Traffic Control State Block

TDF

Traffic Detection Function

TDM

Time Division Multiplexing

TDP-ID

Time Descriptor Policy Identifier

TE

Traffic Engineering

TED

Traffic Engineering Database

TEID

Tunnel Endpoint Identifier

TFN

Tribe Flood Network

TFTP

Trivial File Transfer Protocol

TLDP

Targeted LDP

TLS

Transport Layer Security

TLV

Type Length Value

TM

Traffic Management

TMSI

Temporary Mobile Subscriber Identity

TNC

Technically Non-Conformant

TNS

Transparent Network Substrate

ToD

Time of Day

TOS

Type-of-Service

T-PE

Terminating Provider Edge router

TPID

Tag Protocol Identifier

TPMR

Two-Port MAC Relay

TPSDA

Triple Play Service Delivery Architecture

TS

Transport Stream

TSH

TTL Security Hack

TTI

Trail Trace Identifier

TTL

Time to Live

TTLS

Tunneled Transport Layer Security

TTM

Tunnel Table Manager

TWAMP

Two-Way Active Measurement Protocol

U-APS

Unidirectional Automatic Protection Switching

UBR

Unspecified Bit Rate

UDP

User Datagram Protocol

UE

User Equipment

UICC

Universal Integrated Circuit Card — SIM card

ULD

Uni-directional Link Detection

UMTS

Universal Mobile Telecommunications System (3G)

UNI

User-to-Network Interface

UPnP

Universal Plug and Play

uRPF

Unicast Reverse Path Forwarding

USIM

Universal Subscriber Identity Module — application

USM

User-based Security Model

USU

Used Service Unit

UTC

Coordinated Universal Time

VACM

View-based Access Control Model

VAS

Value Added Service

VBO

VE Block Offset

VBS

VE Block Size

VC

Virtual Circuit

VCC

Virtual Channel Connection

VCCV

Virtual Circuit Connectivity Verification

VCI

Virtual Circuit Identifier

VCP

Virtual Core Port

VE

VPLS Edge

VE-ID

VPWS Edge Identifier

V-GW

Visited WLAN-GW

VID

VLAN ID

VLAN

Virtual LAN

VLL

Virtual Leased Line

vMEPs

Virtual MEPS

VNI

VXLAN Network Identifier

VoD

Video on Demand

VoIP

Voice over IP

VP

Virtual Path

VPC

Virtual Path Connection

VPI

Virtual Path Identifier

VPLS

Virtual Private LAN Service

VPN

Virtual Private Network

VPRN

Virtual Private Routed Network

VPWS

Virtual Private Wire Service

VQM

Video Quality Monitoring

VRF

Virtual Routing and Forwarding table

vRGW

Virtual Residential Gateway

VRID

Virtual Router ID

VRP

Validated ROA Payload

VRRP

Virtual Router Redundancy Protocol

VSA

Vendor Specific Attribute

VSC

Virtual Services Controller

VSD

Virtual Services Directory

VSI-ID

Virtual Switch Instance identifier

VSM

Vendor-Specific Message

Versatile Service Module

VSO

Vendor-Specific Option

VSP

Virtual Services Platform

VT

Validity Time

Virtual Trunk

VTEP

VxLAN Tunnel Endpoint

VTP

Virtual Trunk Protocol

VxLAN

Virtual eXtensible Local Area Network

WAC

WiiMAX Access Controller

WAN

Wide Area Network

WAP

Wireless Application Protocol

WLAN

Wireless Local Area Network

WLAN-GW

WLAN Gateway

WPP

Web Authentication Protocol

Wireless Portal Protocol

WRED

Weighted Random Early Detection

Weighted Random Early Discard

WRR

Weighted-Round-Robin

XML

Extensible Markup Language

X.21

ITU-T X-series Recommendation 21

XMPP

eXtensible Messaging and Presence Protocol