|
|
|---|
|
|
AAA
|
authentication, authorization, and accounting
|
AAAA
|
authentication, authorization, accounting, and address assignment
|
AAL
|
ATM Adaptation Layer
|
ABR
|
area border router
|
AC
|
alternating current; access concentrator
|
ACCM
|
Async Control Character Map
|
ADSL
|
asymmetric digital subscriber line
|
AESA
|
ATM end system address
|
AF
|
assured forwarding
|
AFI
|
authority and format identifier
|
AH
|
authentication header
|
AIS
|
alarm indication signal
|
AIS-L
|
alarm indication signal – line
|
AIS-P
|
alarm indication signal – path
|
ALG
|
application-level gateway
|
ANSI
|
American National Standards Institute
|
API
|
application programming interface
|
APS
|
Automatic Protection Switching
|
ARP
|
Address Resolution Protocol
|
AS
|
autonomous system; Australia (re standards compliance)
|
AS boundary router
|
autonomous system boundary router
|
ASCII
|
American Standard Code for Information Interchange
|
ASIC
|
application-specific integrated circuit
|
AS number
|
autonomous system number
|
ATM
|
Asynchronous Transfer Mode
|
AVP
|
attribute-value pair
|
|
|
backup DR
|
backup designated router
|
BECN
|
backward explicit congestion notification
|
BER
|
bit error rate
|
BERT
|
bit error rate test
|
BFD
|
Bidirectional Forwarding Detection (protocol)
|
BGP
|
Border Gateway Protocol
|
BMA
|
broadcast multiaccess
|
BOOTP
|
bootstrap protocol
|
B-RAS
|
Broadband Remote Access Server
|
BSD
|
Berkeley Software Distribution
|
|
|
CA
|
certificate authority
|
CAC
|
call admission control (MPLS); connection admission control (ATM)
|
CAM
|
content-addressable memory
|
CAP
|
carrierless amplitude phase
|
CAR
|
committed access rate
|
CARS
|
committed access rate service
|
CBC
|
cipher block chaining
|
CBR
|
constant bit rate
|
CC
|
continuity check
|
CCITT
|
International Telegraph and Telephone Consultative Committee
|
CCP
|
Compression Control Protocol
|
CDV
|
cell delay variation
|
CDVT
|
cell delay variation tolerance
|
CE
|
customer edge device
|
CHAP
|
Challenge Handshake Authentication Protocol
|
CIDR
|
classless interdomain routing
|
CISPR
|
International Special Committee on Radio Interference
|
CLACL
|
classifier control list
|
CLEC
|
competitive local exchange carrier
|
CLI
|
command-line interface
|
CLNP
|
Connectionless Network Protocol
|
CLNS
|
Connectionless Network Service
|
CLP
|
cell loss priority
|
CMDA
|
code division multiple access
|
CMTS
|
cable modem termination system
|
CoA
|
change of authorization
|
cOC
|
channelized optical carrier
|
COPS
|
Common Open Policy Service (protocol)
|
CORBA
|
Common Object Request Broker Architecture
|
CoS
|
class of service
|
CPE
|
customer premises equipment
|
CPU
|
central processing unit
|
CRC
|
cyclic redundancy check
|
CR-LDP
|
Constraint-Based Routed Label Distribution Protocol
|
CR-LSP
|
constraint-based routed label-switched path
|
CSNP
|
complete sequence number PDU (protocol data unit)
|
CSU
|
channel service unit
|
CT1, CT3
|
channelized T1, T3
|
CTI
|
computer telephony integration
|
CTS
|
clear to send
|
CTT
|
connection traffic table
|
CUL
|
agreement between Underwriter Laboratories and Canadian Standards Association for joint product safety approval
|
|
|
DC
|
direct current
|
DCC
|
Data Country Code
|
DCD
|
data carrier detect
|
DCE
|
data communication equipment
|
DCM
|
dynamic configuration manager
|
DE
|
discard eligibility
|
DES; 3DES
|
Data Encryption Standard; triple DES
|
DF
|
don't fragment (bit)
|
DHCP
|
Dynamic Host Configuration Protocol
|
DIS
|
designated intermediate system
|
DLCI
|
data-link connection identifier
|
DLCMI
|
data-link connection management interface
|
DMZ
|
demilitarized zone
|
DNIS
|
dialed number identification service
|
DNS
|
Domain Name System
|
DNS-ALG
|
Domain Name System – Application Level Gateway
|
DOCSIS
|
Data over Cable System Interface Specifications
|
DoS
|
denial of service
|
DPD
|
dead peer detection
|
DR
|
designated router
|
DS
|
digital signal; DiffServ
|
DS-BGP
|
dual-stack Border Gateway Protocol
|
DSI
|
dynamic subscriber interface
|
DSL
|
digital subscriber line
|
DSLAM
|
digital subscriber line access multiplexer
|
DSP
|
domain-specific part
|
DSS
|
Digital Signature Standard
|
DST
|
Daylight Saving Time
|
DSU
|
data service unit
|
DTE
|
data terminal equipment
|
DTR
|
data terminal ready
|
DU
|
downstream unsolicited
|
DVMRP
|
Distance Vector Multicast Routing Protocol
|
DXI
|
data exchange interface (abbreviation pronounced "dixie")
|
|
|
EAP
|
Extensible Authentication Protocol
|
EBGP
|
external Border Gateway Protocol
|
ECC
|
error checking and correction; error-checking code
|
ECMP
|
equal-cost multipath
|
ECP
|
Encryption Control Protocol
|
EEPROM
|
electrically erasable programmable read-only memory
|
EF
|
expedited forwarding
|
EFA
|
egress forwarding ASIC
|
EGP
|
exterior gateway protocol
|
E-LSP
|
EXP-inferred-PSC LSP
|
EN
|
European Norm
|
EPD
|
early packet discard
|
ES
|
end system
|
ESD
|
electrostatic discharge
|
ESF
|
extended superframe
|
ESI
|
end system identifier
|
ESP
|
Encapsulating Security Payload
|
EXP
|
experimental (refers to bits in MPLS shim header)
|
|
|
FAT
|
file allocation table
|
FCC
|
Federal Communications Commission
|
FCS
|
frame check sequence
|
FDL
|
facilities data link
|
FE
|
Fast Ethernet
|
FE-2
|
dual-port Fast Ethernet
|
FEC
|
forwarding equivalence class (abbreviation pronounced "feck")
|
FECN
|
forward explicit congestion notification
|
FERF
|
far-end receive failure
|
FFA
|
frame forwarding ASIC
|
FIB
|
forwarding information base
|
FIFO
|
first-in, first-out
|
FIN
|
finish (bit)
|
FPGA
|
field programmable gate array
|
FQDN
|
fully qualified domain name
|
FRU
|
field-replaceable unit
|
FSM
|
finite state machine
|
FTE
|
forwarding table entry
|
FTP
|
File Transfer Protocol
|
|
|
Gbps
|
gigabits per second
|
GE
|
Gigabit Ethernet
|
giaddr
|
gateway IP address
|
GRE
|
Generic Routing Encapsulation
|
GRxx
|
(refers to Bellcore standards)
|
GUI
|
graphical user interface
|
|
|
HAR
|
hierarchical assured rate
|
HDLC
|
High-Level Data Link Control; High-Speed Data Link Control
|
HMAC
|
Hashed Message Authentication Code
|
HO-DSP
|
high-order domain-specific part
|
HRR
|
hierarchical round-robin
|
HSSI
|
high-speed serial interface (abbreviation pronounced "hissy")
|
|
|
I/O
|
input/output
|
IANA
|
Internet Assigned Numbers Authority
|
IAPP
|
Inter Access Point Protocol
|
IBGP
|
internal Border Gateway Protocol
|
IC CS
|
Industry Canada Communications Section
|
ICD
|
International Code Designator
|
ICMP
|
Internet Control Message Protocol
|
ICRQ
|
incoming-call request
|
ID
|
identification; identifying; identifier
|
I-DAS
|
integrated DHCP access server
|
IDI
|
initial domain identifier
|
IDP
|
initial domain part
|
IDSL
|
ISDN digital subscriber line
|
IEC
|
International Electrotechnical Commission
|
IEEE
|
Institute of Electrical and Electronics Engineers
|
IETF
|
Internet Engineering Task Force
|
IGMP
|
Internet Group Management Protocol
|
IGP
|
interior gateway protocol
|
IIF
|
incoming interface
|
IKE
|
Internet Key Exchange
|
ILEC
|
incumbent local exchange carrier
|
ILMI
|
Integrated Local Management Interface
|
InARP
|
Inverse Address Resolution Protocol
|
IOA
|
input/output adapter
|
IP
|
Internet Protocol
|
IPCP
|
Internet Protocol Control Protocol
|
IPoA
|
Internet Protocol over Asynchronous Transfer Mode
|
IPSec
|
Internet Protocol Security
|
IRDP
|
ICMP Router Discovery Protocol
|
ISAKMP
|
Internet Security Association and Key Management Protocol
|
ISDN
|
Integrated Services Digital Network
|
IS-IS
|
Intermediate System–to–Intermediate System
|
ISM
|
IPSec Service module
|
ISO
|
International Organization for Standardization
|
ISP
|
Internet service provider
|
IS Voice
|
Intelligent Service Voice application
|
ITU-T
|
International Telecommunication Union – Telecommunication Standardization
|
|
|
JATE
|
Japan Approvals Institute for Telecommunications Terminal Equipment
|
JDBC
|
Java Database Connectivity
|
|
|
KB
|
kilobyte(s)
|
Kbps
|
kilobits per second
|
|
|
L2TP
|
Layer 2 Tunneling Protocol
|
LAC
|
L2TP access concentrator
|
LAG
|
link aggregation group
|
LAN
|
local area network
|
LCP
|
Link Control Protocol
|
LDAP
|
Lightweight Directory Access Protocol
|
LDP
|
Label Distribution Protocol
|
LED
|
light-emitting diode
|
LER
|
label edge router
|
LIB
|
label information base
|
LIP
|
Link Integrity Protocol
|
LLC
|
logical link control
|
L-LSP
|
label-only-inferred-PSC LSP
|
LMI
|
local management interface; link management interface
|
LNS
|
L2TP network server
|
LOF
|
loss of frame
|
LOP
|
loss of pointer
|
LOS
|
loss of signal
|
LSA
|
link-state advertisement
|
LSDB
|
link-state database
|
LSP
|
label-switched path; link-state PDU; link-state protocol
|
LSR
|
label-switching router
|
|
|
MAC
|
media access control; Message Authentication Code
|
MAU
|
medium attachment unit
|
MB
|
megabyte(s)
|
MBGP
|
multicast Border Gateway Protocol
|
MBone
|
multicast backbone
|
Mbps
|
megabits per second
|
MBS
|
maximum burst size
|
MD5
|
Message Digest 5
|
MDL
|
maintenance data link
|
MDx
|
Message Digest x (hash algorithm)
|
MED
|
multiple exit discriminator
|
MGTM
|
multicast group table manager
|
MIB
|
Management Information Base
|
MLFR
|
Multilink Frame Relay
|
MLPPP
|
Multilink Point-to-Point Protocol
|
motd
|
message of the day
|
MOTM
|
message of the minute
|
MP-BGP
|
Border Gateway Protocol multiprotocol extensions (sometimes referred to as multiprotocol Border Gateway Protocol)
|
MPLS
|
Multiprotocol Label Switching
|
mrinfo
|
multicast router information
|
MRRU
|
multilink maximum received reconstructed unit
|
MRU
|
maximum receive unit
|
MSDP
|
Multicast Source Discovery Protocol
|
MSO
|
multiple service operator
|
MSP
|
Multiplex Section Protection
|
MSS
|
maximum segment size
|
MTU
|
maximum transmission unit; multitenant unit
|
|
|
NAK
|
negative acknowledgment
|
NAPT
|
Network Address Port Translation
|
NAS
|
network access server
|
NAT
|
Network Address Translation
|
NBMA
|
nonbroadcast multiaccess
|
NCP
|
Network Control Protocol
|
ND
|
Neighbor Discovery
|
NEBS
|
Network Equipment Building System
|
NET
|
network entity title
|
NLRI
|
network layer reachability information
|
NMC
|
Network Management Center
|
NMS
|
network management system
|
NNI
|
network-to-network interface
|
NRZ
|
nonreturn to zero
|
NRZI
|
nonreturn to zero inverted
|
NSAP
|
network service access point
|
NSF
|
nonstop forwarding
|
NSSA
|
not-so-stubby area (refers to OSPF routing)
|
NTP
|
Network Time Protocol
|
NVRAM
|
nonvolatile random-access memory
|
NVS
|
nonvolatile storage
|
|
|
OAM
|
operations, administration, and management
|
OC
|
optical carrier
|
ODBC
|
Open Database Connectivity
|
OID
|
object identifier
|
OIF
|
outgoing interface
|
ORF
|
outbound route filter; outbound route filtering
|
OSI
|
Open Systems Interconnection
|
OSINLCP
|
OSI Internet Link Control Protocol; OSI Network Layer Control Protocol
|
OSPF
|
Open Shortest Path First
|
OSS
|
operations support system
|
|
|
P
|
provider core router
|
PADI
|
PPPoE Active Discovery Initiation
|
PADM
|
PPPoE Active Discovery Message
|
PADN
|
PPPoE Active Discovery Network
|
PADO
|
PPPoE Active Discovery Offer
|
PADR
|
PPPoE Active Discovery Request
|
PADS
|
PPPoE Active Discovery Session
|
PADT
|
PPPoE Active Discovery Termination
|
PAP
|
Password Authentication Protocol
|
PBX
|
private branch exchange
|
PCMCIA
|
Personal Computer Memory Card International Association
|
PCR
|
peak cell rate
|
PDU
|
protocol data unit
|
PE
|
provider edge router
|
PFC
|
Protocol Field Compression
|
PFS
|
perfect forward secrecy
|
PHB
|
per-hop behavior
|
PHP
|
penultimate hop pop
|
PIB
|
Policy Information Base
|
PIM
|
Protocol Independent Multicast; power input module
|
PIM DM
|
Protocol Independent Multicast dense mode
|
PIM S-DM
|
Protocol Independent Multicast sparse-dense mode
|
PIM SM
|
Protocol Independent Multicast sparse mode
|
PIM SSM
|
Protocol Independent Multicast source-specific multicast
|
PKI
|
public key infrastructure
|
PLCP
|
physical layer convergence procedure
|
PM
|
policy manager
|
PNNI
|
private network-to-network interface
|
POP
|
point of presence
|
POS
|
packet over SONET
|
POST
|
power-on self-test
|
PPP
|
Point-to-Point Protocol
|
PPPoE
|
Point-to-Point Protocol over Ethernet
|
pps
|
packets per second
|
PROM
|
programmable read-only memory
|
PSC
|
per-hop scheduling class
|
PSNP
|
partial sequence number PDU (protocol data unit)
|
PVC
|
permanent virtual circuit (or connection)
|
|
|
QoS
|
quality of service
|
|
|
RADIUS
|
Remote Authentication Dial-In User Service
|
RD
|
route distinguisher
|
RDBS
|
relational database system
|
RDI
|
remote defect indication
|
RED
|
random early detection
|
REI
|
remote error indication
|
RESV
|
reservation
|
RFC
|
Request for Comments
|
RIB
|
routing information base
|
RIP
|
Routing Information Protocol
|
RISC
|
reduced instruction set computing
|
RMI
|
Remote Method Invocation (Java)
|
RP
|
rendezvous point (router)
|
RPF
|
reverse-path forwarding
|
RSA
|
Rivest-Shamir-Adleman (encryption algorithm)
|
RSVP
|
Resource Reservation Protocol
|
RSVP-TE
|
Resource Reservation Protocol with traffic engineering extensions
|
RTM
|
resource threshold monitor
|
RTR
|
Response Time Reporter
|
RTSP
|
Real-Time Streaming Protocol
|
RWS
|
receive window size
|
RX
|
receive
|
|
|
SA
|
security association
|
SAFI
|
subsequent address family identifier
|
SAR
|
segmentation and reassembly
|
SC
|
system controller
|
SCCRQ
|
Start-Control-Connection-Request
|
SCEP
|
Simple Certificate Enrollment Protocol
|
SCR
|
sustained cell rate
|
SCSI
|
small computer system interface (abbreviation pronounced "scuzzy")
|
SDH
|
Synchronous Digital Hierarchy
|
SDRAM
|
synchronous dynamic random access memory
|
SDSL
|
symmetric digital subscriber line
|
SDU
|
service data unit
|
SDX
|
Service Deployment System (formerly SSC)
|
SEF
|
severely errored framing
|
SES
|
severely errored second
|
SFP
|
small form-factor pluggable transceiver
|
(S,G)
|
source (S) of the multicast packet and
the destination multicast group address (G)
|
SHA
|
Secure Hash Algorithm
|
SIP
|
SMDS Interface Protocol
|
SLA
|
service level agreement
|
SLARP
|
Serial Line Address Resolution Protocol
|
SM
|
Service line module
|
SMF
|
single-mode fiber
|
SMM
|
switch management module
|
SNAP
|
Subnetwork Access Protocol; subnetwork attachment point
|
SNI
|
SMDS network interface
|
SNMP
|
Simple Network Management Protocol
|
SNPA
|
subnet point of attachment
|
SNTP
|
Simple Network Time Protocol
|
SODIMM
|
small outline dual inline memory module
|
SONET
|
Synchronous Optical Network
|
SPD
|
security policy database
|
SPF
|
shortest path first
|
SPI
|
security parameter index
|
SPQ
|
strict-priority queues
|
SPVC
|
soft permanent virtual circuit
|
SQL
|
Structured Query Language
|
SRP
|
switch route processor
|
SRT
|
source-rooted tree
|
SSC
|
Service Selection Center (no longer used; see SDX)
|
SSH
|
Secure Shell
|
SSN
|
short sequence number
|
STM
|
Synchronous Transport module
|
SVC
|
switched virtual circuit
|
S-VLAN
|
stacked virtual local area network
|
SYN
|
synchronize (bit)
|
|
|
TAC
|
Technical Assistance Center
|
TACACS
|
Terminal Access Controller Access Control System
|
TC
|
transmission convergence
|
TCP
|
Transmission Control Protocol
|
TE
|
traffic engineering
|
TFTP
|
Trivial File Transfer Protocol
|
TIP
|
terminal interface processor
|
TLV
|
type-length-value
|
ToS
|
type of service
|
TPID
|
Tag Protocol Identifier
|
TSM
|
Tunnel Service line module
|
TTL
|
time-to-live
|
TU
|
tributary unit
|
TUG
|
tributary unit group
|
TX
|
transmit
|
|
|
U
|
unit of measurement for rack-mounted equipment (a U is 1.75 in., or 4.44 cm)
|
UBR
|
unspecified bit rate
|
UDP
|
User Datagram Protocol
|
UI
|
user interface
|
UL
|
Underwriter Laboratories
|
UMTS
|
universal mobile telecommunications system
|
UNI
|
user-network interface (ATM usage); user-to-network interface
|
UPC
|
user parameter control
|
URL
|
Uniform Resource Locator
|
USM
|
user-based security model
|
UTC
|
Coordinated Universal Time
|
|
|
VAC
|
volts alternating current
|
VBR
|
variable bit rate
|
VBR-NRT
|
variable bit rate, non–real time
|
VBR-RT
|
variable bit rate, real time
|
VC
|
virtual circuit (or connection)
|
VCC
|
virtual channel connection
|
VCCI
|
Voluntary Control Council for Interference
|
VCD
|
virtual circuit descriptor
|
VCI
|
virtual channel identifier
|
VDC
|
volts direct current
|
VDSL
|
very-high-bit-rate digital subscriber line
|
VLAN
|
virtual local area network
|
VoIP
|
voice over Internet Protocol
|
VOQL
|
virtual output queue length
|
VP
|
virtual path
|
VPC
|
virtual path connection
|
VPI
|
virtual path identifier
|
VPN
|
virtual private network
|
VR
|
virtual router
|
VRF
|
VPN routing and forwarding instance
|
VRID
|
virtual router identifier
|
VRRP
|
Virtual Router Redundancy Protocol
|
VSA
|
vendor-specific attribute (RADIUS)
|
VT
|
virtual tributary
|
VTS
|
VPN Tunnel Server
|
vty
|
virtual terminal
|
|
|
WAN
|
wide area network
|
WAP
|
wireless access point
|
WEP
|
Wired Equivalent Privacy
|
WFQ
|
weighted fair queuing
|
WINS
|
Windows Internet Name Service (Microsoft)
|
WLAN
|
wireless local area network
|
WLL
|
wireless local loop
|
WRED
|
weighted random early detection
|
WRR
|
weighted round-robin
|
|
|
xDSL
|
combined term used to refer to ADSL, HDSL, SDSL, and VDSL
|
XFP
|
10-gigabit small form-factor pluggable transceiver
|