List of acronyms

Table 1. Acronyms

Acronym

Expansion

2G

second-generation wireless telephone technology

3DES

triple DES (data encryption standard)

3G

third-generation mobile telephone technology

6VPE

IPv6 on Virtual Private Edge Router

7705 SAR

7705 Service Aggregation Router

7750 SR

7750 Service Router

8 PSK

eight phase shift keying

16 QAM

16-state quadrature amplitude modulation

32 QAM

32-state quadrature amplitude modulation

64 QAM

64-state quadrature amplitude modulation

128 QAM

128-state quadrature amplitude modulation

256 QAM

256-state quadrature amplitude modulation

ABR

area border router

available bit rate

AC

alternating current

attachment circuit

ACK

acknowledge

ACL

access control list

ACR

adaptive clock recovery

AD

auto-discovery

ADM

add/drop multiplexer

ADP

automatic discovery protocol

AES

advanced encryption standard

AFI

authority and format identifier

AIGP

accumulated IGP

AIS

alarm indication signal

ALG

application level gateway

AMP

active multipath

ANSI

American National Standards Institute

Apipe

ATM VLL

APS

automatic protection switching

ARP

address resolution protocol

A/S

active/standby

AS

autonomous system

ASAP

any service, any port

ASBR

autonomous system boundary router

ASM

any-source multicast

autonomous system message

ASN

autonomous system number

ATM

asynchronous transfer mode

ATM PVC

ATM permanent virtual circuit

AU

administrative unit

AUG

administrative unit group

B3ZS

bipolar with three-zero substitution

Batt A

battery A

B-bit

beginning bit (first packet of a fragment)

BBE

background block errors

Bc

committed burst size

Be

excess burst size

BECN

backward explicit congestion notification

Bellcore

Bell Communications Research

BFD

bidirectional forwarding detection

BGP

border gateway protocol

BGP-LS

border gateway protocol link state

BGP-LU

border gateway protocol labeled unicast

BITS

building integrated timing supply

BTCA

best timeTransmitter clock algorithm

BMU

broadcast, multicast, and unknown traffic

Traffic that is not unicast. Any nature of multipoint traffic:

  • broadcast (that is, all 1s as the destination IP to represent all destinations within the subnet)

  • multicast (that is, traffic typically identified by the destination address, uses special destination address); for IP, the destination must be 224.0.0.0 to 239.255.255.255

  • unknown (that is, the destination is typically a valid unicast address but the destination port/interface is not yet known; therefore, traffic needs to be forwarded to all destinations; unknown traffic is treated as broadcast)

BNM

bandwidth notification message

BOF

boot options file

BoS

bottom of stack

BPDU

bridge protocol data unit

BRAS

Broadband Remote Access Server

BSC

Base Station Controller

BSM

bootstrap message

BSR

bootstrap router

BSTA

Broadband Service Termination Architecture

BTS

base transceiver station

CA

certificate authority

CAS

channel associated signaling

CBN

common bonding networks

CBS

committed buffer space

CC

continuity check

control channel

CCM

continuity check message

CCTV

closed-circuit television

CE

circuit emulation

customer edge

CEM

circuit emulation

CES

circuit emulation services

CESoPSN

circuit emulation services over packet switched network

CFM

connectivity fault management

cHDLC

Cisco high-level data link control protocol

CIDR

classless inter-domain routing

CIR

committed information rate

CLI

command line interface

CLP

cell loss priority

CMP

certificate management protocol

C-multicast

customer multicast

CoS

class of service

CPE

customer premises equipment

Cpipe

circuit emulation (or TDM) VLL

CPM

Control and Processing Module (CPM is used instead of CSM when referring to CSM filtering to align with CLI syntax used with other SR products). CSM management ports are referred to as CPM management ports in the CLI.

CPROTO

C prototype

CPU

central processing unit

C/R

command/response

CRC

cyclic redundancy check

CRC-32

32-bit cyclic redundancy check

CRL

certificate revocation list

CRON

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

CRP

candidate RP

CSM

Control and Switching Module

CSNP

complete sequence number PDU

CSPF

constrained shortest path first

C-tag

customer VLAN tag

CV

connection verification

customer VLAN (tag)

CW

control word

CWDM

coarse wavelength-division multiplexing

DA/FAN

distribution automation and field area network

DC

direct current

DC-C

DC return - common

DCE

data communications equipment

DC-I

DC return - isolated

DCO

digitally controlled oscillator

DCR

differential clock recovery

DDoS

distributed DoS

DE

discard eligibility

DER

distinguished encoding rules

DES

data encryption standard

DF

do not fragment

designated forwarder

DH

Diffie-Hellman

DHB

decimal, hexadecimal, or binary

DHCP

dynamic host configuration protocol

DHCPv6

dynamic host configuration protocol for IPv6

DIS

designated intermediate system

DLCI

data link connection identifier

DLCMI

data link connection management interface

DM

delay measurement

DNS

domain name server

DNU

do not use

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

DPD

dead peer detection

DPI

deep packet inspection

DPLL

digital phase locked loop

DR

designated router

DSA

digital signal algorithm

DSCP

differentiated services code point

DSL

digital subscriber line

DSLAM

digital subscriber line access multiplexer

DTE

data termination equipment

DU

downstream unsolicited

DUID

DHCP unique identifier

DUS

do not use for synchronization

DV

delay variation

DVMRP

distance vector multicast routing protocol

e911

enhanced 911 service

EAP

Extensible Authentication Protocol

EAPOL

EAP over LAN

E-bit

ending bit (last packet of a fragment)

E-BSR

elected BSR

ECMP

equal cost multipath

EE

end entity

EFM

Ethernet in the first mile

EGP

exterior gateway protocol

EIA/TIA-232

Electronic Industries Alliance/Telecommunications Industry Association Standard 232 (also known as RS-232)

EIR

excess information rate

EJBCA

Enterprise Java Bean Certificate Authority

E-LAN

Ethernet local area network

E-Line

Ethernet virtual private line

EL

entropy label

eLER

egress label edge router

ELI

entropy label indicator

E&M

ear and mouth

earth and magneto

exchange and multiplexer

eMBMS

evolved MBMS

EOP

end of packet

EPC

evolved packet core

EPD

early packet discard

Epipe

Ethernet VLL

EPL

Ethernet private line

EPON

Ethernet Passive Optical Network

EPS

equipment protection switching

ERO

explicit route object

ES

Ethernet segment

errored seconds

ESD

electrostatic discharge

ESI

Ethernet segment identifier

ESMC

Ethernet synchronization message channel

ESN

extended sequence number

ESP

encapsulating security payload

ESPI

encapsulating security payload identifier

ETE

end-to-end

ETH-BN

Ethernet bandwidth notification

ETH-CFM

Ethernet connectivity fault management (IEEE 802.1ag)

EVC

Ethernet virtual connection

EVDO

evolution - data optimized

EVI

EVPN instance

EVPL

Ethernet virtual private link

EVPN

Ethernet virtual private network

EXP bits

experimental bits (currently known as TC)

FC

forwarding class

FCS

frame check sequence

FD

frequency diversity

FDB

forwarding database

FDL

facilities data link

FEAC

far-end alarm and control

FEC

forwarding equivalence class

FECN

forward explicit congestion notification

FeGW

far-end gateway

FEP

front-end processor

FF

fixed filter

FFD

fast fault detection

FIB

forwarding information base

FIFO

first in, first out

FIPS-140-2

Federal Information Processing Standard publication 140-2

FM

fault management

FNG

fault notification generator

FOM

figure of merit

Fpipe

frame relay VLL

FQDN

fully qualified domain name

FR

frame relay

FRG bit

fragmentation bit

FRR

fast reroute

FTN

FEC-to-NHLFE

FTP

file transfer protocol

FXO

foreign exchange office

FXS

foreign exchange subscriber

GFP

generic framing procedure

GigE

Gigabit Ethernet

GLONASS

Global Navigation Satellite System (Russia)

GNSS

global navigation satellite system (generic)

GPON

Gigabit Passive Optical Network

GPRS

general packet radio service

GPS

Global Positioning System

GRE

generic routing encapsulation

GRT

global routing table

GSM

Global System for Mobile Communications (2G)

GTP-U

GPRS tunneling protocol user plane

GW

gateway

HA

high availability

HCM

high capacity multiplexing

HDB3

high density bipolar of order 3

HDLC

high-level data link control protocol

HEC

header error control

HMAC

hash message authentication code

Hpipe

HDLC VLL

H-QoS

hierarchical quality of service

HSB

hot standby

HSDPA

high-speed downlink packet access

HSPA

high-speed packet access

H-VPLS

hierarchical virtual private line service

IANA

Internet Assigned Numbers Authority

IBN

isolated bonding networks

ICB

inter-chassis backup

ICMP

Internet control message protocol

ICMPv6

Internet control message protocol for IPv6

ICP

IMA control protocol cells

IDS

intrusion detection system

IDU

indoor unit

IED

intelligent end device

IEEE

Institute of Electrical and Electronics Engineers

IEEE 1588v2

Institute of Electrical and Electronics Engineers standard 1588-2008

IES

Internet Enhanced Service

IETF

Internet Engineering Task Force

IGMP

Internet group management protocol

IGP

interior gateway protocol

IID

instance ID

IKE

Internet key exchange

iLER

ingress label edge router

ILM

incoming label map

IMA

inverse multiplexing over ATM

IMET-IR

inclusive multicast Ethernet tag—ingress replication

INVARP

inverse address resolution protocol

IOM

input/output module

IP

Internet Protocol

IPCP

Internet Protocol Control Protocol

IPIP

IP in IP

Ipipe

IP interworking VLL

I-PMSI

inclusive PMSI

IPoATM

IP over ATM

IPS

intrusion prevention system

IPSec

Internet Protocol security

IR

ingress replication

IRB

integrated routing and bridging

ISA

integrated services adapter

ISAKMP

Internet security association and key management protocol

IS-IS

Intermediate System-to-Intermediate System

IS-IS-TE

IS-IS-traffic engineering (extensions)

ISO

International Organization for Standardization

IW

interworking

JP

join prune

KG

key group

LB

loopback

lbf-in

pound force inch

LBM

loopback message

LBO

line buildout

LBR

loopback reply

LCP

link control protocol

LDP

label distribution protocol

LER

label edge router

LFA

loop-free alternate

LFIB

label forwarding information base

LIB

label information base

LLDP

link layer discovery protocol

LLDPDU

link layer discovery protocol data unit

LLF

link loss forwarding

LLID

loopback location ID

LM

loss measurement

LMI

local management interface

LOS

line-of-sight

loss of signal

LSA

link-state advertisement

LSDB

link-state database

LSP

label switched path

link-state PDU (for IS-IS)

LSPA

LSP attributes

LSR

label switch router

link-state request

LSU

link-state update

LT

linktrace

LTE

long term evolution

line termination equipment

LTM

linktrace message

LTN

LSP ID to NHLFE

LTR

link trace reply

MA

maintenance association

MAC

media access control

MA-ID

maintenance association identifier

MBB

make-before-break

MBGP

multicast BGP

multiprotocol BGP

multiprotocol extensions for BGP

MBMS

multimedia broadcast multicast service

MBS

maximum buffer space

maximum burst size

media buffer space

MBSP

mobile backhaul service provider

MCAC

multicast connection admission control

MC-APS

multi-chassis automatic protection switching

MC-MLPPP

multi-class multilink point-to-point protocol

MCS

multicast server

multi-chassis synchronization

MCT

MPT craft terminal

MD

maintenance domain

MD5

message digest version 5 (algorithm)

MDA

media dependent adapter

MDDB

multidrop data bridge

MDL

maintenance data link

MDT

multicast distribution tree

ME

maintenance entity

MED

multi-exit discriminator

MEF

Metro Ethernet Forum

MEG

maintenance entity group

MEG-ID

maintenance entity group identifier

MEN

Metro Ethernet network

MEP

maintenance association end point

MFC

multi-field classification

MHD

multi-homed device

MHF

MIP half function

MHN

multi-homed network

MIB

management information base

MI-IS-IS

multi-instance IS-IS

MIR

minimum information rate

MLD

multicast listener discovery

mLDP

multicast LDP

MLPPP

multilink point-to-point protocol

mLSP

multicast LSP

MoFRR

multicast-only fast reroute

MP

merge point

multilink protocol

multipoint

MP-BGP

multiprotocol border gateway protocol

MPLS

multiprotocol label switching

MPLSCP

multiprotocol label switching control protocol

MPP

MPT protection protocol

MPR

see Wavence

MPR-e

Microwave Packet Radio (standalone mode)

MPT-HC V2/9558HC

Microwave Packet Transport, High Capacity version 2

MPT-HLC

Microwave Packet Transport, High-Capacity Long-Haul Cubic (ANSI)

MPT-HQAM

Microwave Packet Transport, High Capacity (MPT-HC-QAM) or Extended Power (MPT-XP-QAM) with 512/1024 QAM

MPT-MC

Microwave Packet Transport, Medium Capacity

MPT-XP

Microwave Packet Transport, High Capacity (very high power version of MPT-HC V2/9558HC)

MRAI

minimum route advertisement interval

MRRU

maximum received reconstructed unit

MRU

maximum receive unit

MSDP

Multicast Source Discovery Protocol

MSDU

MAC Service Data Unit

MSO

multi-system operator

MS-PW

multi-segment pseudowire

MSS

maximum segment size

Microwave Service Switch

MTIE

maximum time interval error

MTSO

mobile trunk switching office

MTU

maximum transmission unit

multi-tenant unit

M-VPLS

management virtual private line service

MVPN

multicast VPN

MVR

multicast VPLS registration

MW

microwave

MWA

microwave awareness

N·M

newton meter

NAT

network address translation

NAT-T

network address translation traversal

NBMA

non-broadcast multiple access (network)

ND

neighbor discovery

NE

network element

NET

network entity title

NFM-P

Network Functions Manager - Packet (formerly 5620 SAM)

NGE

network group encryption

NG-MVPN

next generation MVPN

NH

next hop

NHLFE

next hop label forwarding entry

NHOP

next-hop

NLOS

non-line-of-sight

NLPID

network level protocol identifier

NLRI

network layer reachability information

NNHOP

next next-hop

NNI

network-to-network interface

Node B

similar to BTS but used in 3G networks — term is used in UMTS (3G systems) while BTS is used in GSM (2G systems)

NOC

network operations center

NPAT

network port address translation

NRC-F

Network Resource Controller - Flow

NRC-P

Network Resource Controller - Packet

NRC-T

Network Resource Controller - Transport

NRC-X

Network Resource Controller - Cross Domain

NSAP

network service access point

NSD

Network Services Director

NSP

native service processing

Network Services Platform

NSSA

not-so-stubby area

NTP

network time protocol

NTR

network timing reference

OADM

optical add/drop multiplexer

OAM

operations, administration, and maintenance

OAMPDU

OAM protocol data units

OC3

optical carrier level 3

OCSP

online certificate status protocol

ODU

outdoor unit

OIF

outgoing interface

OLT

optical line termination

OMC

optical management console

ONT

optical network terminal

OOB

out-of-band

OPX

off premises extension

ORF

outbound route filtering

OS

operating system

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

OSSP

organization specific slow protocol

OTP

one time password

OWAMP

one-way active measurement protocol

P2MP

point to multipoint

PADI

PPPoE active discovery initiation

PADR

PPPoE active discovery request

PAE

port authentication entities

PSB

path state block

PBO

packet byte offset

PBR

policy-based routing

PBX

private branch exchange

PCAP

packet capture

PCC

Path Computation Element Client

PCE

Path Computation Element

PCEP

Path Computation Element Protocol

PCM

pulse code modulation

PCP

priority code point

PCR

proprietary clock recovery

PDU

power distribution unit

protocol data units

PDV

packet delay variation

PDVT

packet delay variation tolerance

PE

provider edge router

PEAPv0

protected extensible authentication protocol version 0

PEM

privacy enhanced mail

PFoE

power feed over Ethernet

PFS

perfect forward secrecy

PHB

per-hop behavior

PHP

penultimate hop popping

PHY

physical layer

PIC

prefix independent convergence

PID

protocol ID

PIM SSM

protocol independent multicast—source-specific multicast

PIR

peak information rate

PKCS

public key cryptography standards

PKI

public key infrastructure

PLAR

private line automatic ringdown

PLCP

Physical Layer Convergence Protocol

PLR

point of local repair

PLSP

path LSP

PM

performance monitoring

PMSI

P-multicast service interface

P-multicast

provider multicast

PoE

power over Ethernet

PoE+

power over Ethernet plus

POH

path overhead

POI

purge originator identification

PoP

point of presence

POS

packet over SONET

PPP

point-to-point protocol

PPPoE

point-to-point protocol over Ethernet

PPS

pulses per second

PRC

primary reference clock

PRS

primary reference source

PRTC

primary reference time clock

PSE

power sourcing equipment

PSK

pre-shared key

PSN

packet switched network

PSNP

partial sequence number PDU

PTA

PMSI tunnel attribute

PTM

packet transfer mode

PTP

performance transparency protocol

precision time protocol

PuTTY

an open-source terminal emulator, serial console, and network file transfer application

PVC

permanent virtual circuit

PVCC

permanent virtual channel connection

PW

pseudowire

PWE

pseudowire emulation

PWE3

pseudowire emulation edge-to-edge

Q.922

ITU-T Q-series Specification 922

QL

quality level

QoS

quality of service

QPSK

quadrature phase shift keying

RADIUS

Remote Authentication Dial In User Service

RAN

Radio Access Network

RBS

robbed bit signaling

RD

route distinguisher

RDI

remote defect indication

RED

random early discard

RESV

reservation

RIB

routing information base

RIP

routing information protocol

RJ45

registered jack 45

RMON

remote network monitoring

RNC

Radio Network Controller

RP

rendezvous point

RPF RTM

reverse path forwarding RTM

RPS

radio protection switching

RPT

rendezvous-point tree

RR

route reflector

RRO

record route object

RS-232

Recommended Standard 232 (also known as EIA/TIA-232)

RSA

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

RSHG

residential split horizon group

RSTP

rapid spanning tree protocol

RSVP-TE

resource reservation protocol - traffic engineering

RT

receive/transmit

RTC

route target constraint

RTM

routing table manager

RTN

battery return

RTP

real-time protocol

R&TTE

Radio and Telecommunications Terminal Equipment

RTU

remote terminal unit

RU

rack unit

r-VPLS

routed virtual private LAN service

SA

security association

source-active

SAA

service assurance agent

SAFI

subsequent address family identifier

SAP

service access point

SAToP

structure-agnostic TDM over packet

SCADA

surveillance, control and data acquisition

SC-APS

single-chassis automatic protection switching

SCP

secure copy

SCTP

Stream Control Transmission Protocol

SD

signal degrade

space diversity

SDH

synchronous digital hierarchy

SDI

serial data interface

SDN

software defined network

SDP

service destination point

SE

shared explicit

SeGW

secure gateway

SES

severely errored seconds

SETS

synchronous equipment timing source

SF

signal fail

SFP

small form-factor pluggable (transceiver)

SFTP

SSH file transfer protocol

(S,G)

(source, group)

SGT

self-generated traffic

SHA-1

secure hash algorithm

SHG

split horizon group

SIR

sustained information rate

SLA

Service Level Agreement

SLARP

serial line address resolution protocol

SLID

subscriber location identifier of a GPON module

SLM

synthetic loss measurement

SNMP

Simple Network Management Protocol

SNPA

subnetwork point of attachment

SNR

signal to noise ratio

SNTP

simple network time protocol

SONET

synchronous optical networking

S-PE

switching provider edge router

SPF

shortest path first

SPI

security parameter index

S-PMSI

selective PMSI

SPT

shortest path tree

SR

service router (7750 SR)

segment routing

SRLG

shared risk link group

SRP

stateful request parameter

SRRP

subscriber routed redundancy protocol

SR-ISIS

segment routing IS-IS

SR-OSPF

segment routing OSPF

SR-TE

segment routing traffic engineering

SSH

secure shell

SSM

source-specific multicast

synchronization status messaging

SSU

system synchronization unit

S-tag

service VLAN tag

STM

synchronous transport module

STM1

synchronous transport module, level 1

STP

spanning tree protocol

STS

synchronous transport signal

SVC

switched virtual circuit

SVEC

synchronization vector

SYN

synchronize

TACACS+

Terminal Access Controller Access-Control System Plus

TC

traffic class (formerly known as EXP bits)

TCP

transmission control protocol

TDA

transmit diversity antenna

TDEV

time deviation

TDM

time division multiplexing

TE

traffic engineering

TEDB

traffic engineering database

TEID

tunnel endpoint identifier

TEP

tunnel endpoint

TFTP

trivial file transfer protocol

T-LDP

targeted LDP

TLS

transport layer security

TLV

type length value

TM

traffic management

ToD

time of day

ToS

type of service

T-PE

terminating provider edge router

TPID

tag protocol identifier

TPIF

IEEE C37.94 teleprotection interface

TPMR

two-port MAC relay

TPS

transmission protection switching

TSoP

Transparent SDH/SONET over Packet

TTL

time to live

TTLS

tunneled transport layer security

TTM

tunnel table manager

TU

tributary unit

TUG

tributary unit group

TWAMP

two-way active measurement protocol

U-APS

unidirectional automatic protection switching

UAS

unavailable seconds

UBR

unspecified bit rate

UDP

user datagram protocol

UFD

unidirectional forwarding detection

UMH

upstream multicast hop

UMTS

Universal Mobile Telecommunications System (3G)

UNI

user-to-network interface

uRPF

unicast reverse path forwarding

V.11

ITU-T V-series Recommendation 11

V.24

ITU-T V-series Recommendation 24

V.35

ITU-T V-series Recommendation 35

VC

virtual circuit

VCB

voice conference bridge

VCC

virtual channel connection

VCCV

virtual circuit connectivity verification

VCI

virtual circuit identifier

VID

VLAN ID

VLAN

virtual LAN

VLL

virtual leased line

VM

virtual machine

VoIP

voice over IP

Vp

peak voltage

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

VRF

virtual routing and forwarding table

VRRP

virtual router redundancy protocol

V-SAP

virtual service access point

VSE

vendor-specific extension

VSI

virtual switch instance

VSO

vendor-specific option

VT

virtual trunk

virtual tributary

VTG

virtual tributary group

Wavence

formerly 9500 MPR (Microwave Packet Radio)

WCDMA

wideband code division multiple access (transmission protocol used in UMTS networks)

WRED

weighted random early discard

WTR

wait to restore

X.21

ITU-T X-series Recommendation 21

XOR

exclusive-OR

XRO

exclude route object