Acronyms

A
 

ACE

access control entry

ACL

access control list

AFI

authority and format identifier

Agport

aggregation port

AMP

Active Monitor Present

APaRT

Automated Packet Recognition and Translation

ARP

Address Resolution Protocol


B
 

BEM

best effort method

BGP

Border Gateway Protocol

BPDU

bridge protocol data unit

BRF

bridge relay function

BSC

Bisync

BSTUN

Block Serial Tunnel

BUS

broadcast and unknown server

BVI

bridge-group virtual interface


C
 

CAM

content-addressable memory

CAR

committed access rate

CCA

circuit card assembly

CDP

Cisco Discovery Protocol

CEF

Cisco Express Forwarding

CHAP

Challenge Handshake Authentication Protocol

CIR

committed information rate

CLI

command-line interface

CLNS

Connection-Less Network Service

CMNS

Connection-Mode Network Service

COPS

Common Open Policy Server

COPS-DS

Common Open Policy Server Differentiated Services

CoS

class of service

CPLD

Complex Programmable Logic Device

CRC

cyclic redundancy check

CRF

concentrator relay function

CST

Common Spanning Tree


D
 

DAI

Dynamic ARP Inspection

DBL

Dynamic Buffer Limiting

DCC

Data Country Code

dCEF

distributed Cisco Express Forwarding

DDR

dial-on-demand routing

DE

discard eligibility

DEC

Digital Equipment Corporation

DFI

Domain-Specific Part Format Identifier

DFP

Dynamic Feedback Protocol

DISL

Dynamic Inter-Switch Link

DLC

Data Link Control

DLSw

Data Link Switching

DMP

data movement processor

DNS

Domain Name System

DoD

Department of Defense

DOS

denial of service

DRAM

dynamic RAM

DRiP

Dual Ring Protocol

DSAP

destination service access point

DSCP

differentiated services code point

DSPU

downstream SNA Physical Units

DTP

Dynamic Trunking Protocol

DTR

data terminal ready

DVMRP

Distance Vector Multicast Rotuing Protocol

DXI

data exchange interface


E
 

EAP

Extensible Authentication Protocol

EARL

Enhanced Address Recognition Logic

EEPROM

electrically erasable programmable read-only memory

EHSA

enhanced high system availability

EIA

Electronic Industries Association

ELAN

Emulated Local Area Network

EOBC

Ethernet out-of-band channel

ESI

end-system identifier


F
 

FECN

forward explicit congestion notification

FM

feature manager

FRU

field replaceable unit

FSM

feasible successor metrics


G
 

GARP

General Attribute Registration Protocol

GMRP

GARP Multicast Registration Protocol

GVRP

GARP VLAN Registration Protocol


I
 

ICC

Inter-card Communication

ICD

International Code Designator

ICMP

Internet Control Message Protocol

IDB

interface descriptor block

IDP

initial domain part or Internet Datagram Protocol

IDPROM

ID Programmable Read-Only Memory

IFS

IOS File System

IGMP

Internet Group Management Protocol

IGRP

Interior Gateway Routing Protocol

ILMI

Integrated Local Management Interface

IP

Internet Protocol

IPC

interprocessor communication

IPX

Internetwork Packet Exchange

IS-IS

Intermediate System-to-Intermediate System Intradomain Routing Protocol

ISL

Inter-Switch Link

ISO

International Organization of Standardization

ISR

Integrated SONET router

ISSU

In Service Software Upgrade


L
 

L2

Layer 2

L3

Layer 3

L4

Layer 4

LAN

local area network

LANE

LAN Emulation

LAPB

Link Access Procedure, Balanced

LDA

Local Director Acceleration

LCP

Link Control Protocol

LEC

LAN Emulation Client

LECS

LAN Emulation Configuration Server

LEM

link error monitor

LER

link error rate

LES

LAN Emulation Server

LLC

Logical Link Control

LTL

Local Target Logic


M
 

MAC

Media Access Control

MCL

Mismatched Command List

MD5

Message Digest 5

MET

Multicast Expansion Table

MFIB

Multicast Forwarding Information Base

MIB

Management Information Base

MII

media-independent interface

MLS

Multilayer Switching

MLSE

maintenance loop signaling entity

MOP

Maintenance Operation Protocol

MOTD

message-of-the-day

MRM

multicast routing monitor

MRQ

Multicast Replication Queue

MSDP

Multicast Source Discovery Protocol

MST

Multiple Spanning Tree

MTU

maximum transmission unit

MVAP

multiple VLAN access port


N
 

NBP

Name Binding Protocol

NCIA

Native Client Interface Architecture

NDE

NetFlow Data Export

NET

network entity title

NetBIOS

Network Basic Input/Output System

NFFC

NetFlow Feature Card

NMP

Network Management Processor

NSAP

network service access point

NTP

Network Time Protocol

NVRAM

nonvolatile RAM


O
 

OAM

Operation, Administration, and Maintenance

OSI

Open System Interconnection

OSPF

open shortest path first


P
 

PAE

port access entity

PAgP

Port Aggregation Protocol

PBD

packet buffer daughterboard

PC

Personal Computer (formerly PCMCIA)

PCM

pulse code modulation

PCR

peak cell rate

PDP

policy decision point

PDU

protocol data unit

PEM

Power Entry Module

PEP

policy enforcement point

PGM

Pragmatic General Multicast

PHY

physical sublayer

PIB

policy information base

PIM

Protocol Independent Multicast

PM

Port manager

PPP

Point-to-Point Protocol

PRC

Parser Return Code

PRID

Policy Rule Identifiers

PVLAN

Private VLAN

PVST+

Per VLAN Spanning Tree+


Q
 

QM

QoS manager

QoS

quality of service


R
 

RACL

router interface access control list

RADIUS

Remote Access Dial-In User Service

RAM

random-access memory

RCP

Remote Copy Protocol

RGMP

Router Group Management Protocol

RIF

Routing Information Field

RMON

remote network monitor

ROM

read-only memory

RP

route processor or rendezvous point

RPC

remote procedure call

RPF

reverse path forwarding

RPR

Router Processor Redundancy

RSPAN

remote SPAN

RST

reset

RSVP

ReSerVation Protocol

Rx

Receive


S
 

SAID

Security Association Identifier

SAP

service access point

SCM

service connection manager

SCP

Switch-Module Configuration Protocol

SDLC

Synchronous Data Link Control

SGBP

Stack Group Bidding Protocol

SIMM

single in-line memory module

SLB

server load balancing

SLCP

Supervisor Line-Card Processor

SLIP

Serial Line Internet Protocol

SMDS

Software Management and Delivery Systems

SMF

software MAC filter

SMP

Standby Monitor Present

SMRP

Simple Multicast Routing Protocol

SMT

Station Management

SNAP

Subnetwork Access Protocol

SNMP

Simple Network Management Protocol

SPAN

Switched Port Analyzer

SRB

source-route bridging

SRT

source-route transparent bridging

SSTP

Cisco Shared Spanning Tree

STP

Spanning Tree Protocol

SVC

switched virtual circuit

SVI

switched virtual interface


T
 

TACACS+

Terminal Access Controller Access Control System Plus

TARP

Target Identifier Address Resolution Protocol

TCAM

Ternary Content Addressable Memory

TCL

table contention level

TCP/IP

Transmission Control Protocol/Internet Protocol

TFTP

Trivial File Transfer Protocol

TIA

Telecommunications Industry Association

TLV

type-length-value

TopN

Utility that allows the user to analyze port traffic by reports

TOS

type of service

TrBRF

Token Ring Bridge Relay Function

TrCRF

Token Ring Concentrator Relay Function

TTL

Time To Live

TVX

valid transmission

Tx

Transmit


U
 

UDLD

UniDirectional Link Detection Protocol

UDP

User Datagram Protocol

UNI

User-Network Interface

UTC

Coordinated Universal Time


V
 

VACL

VLAN access control list

VCC

virtual channel circuit

VCD

virtual circuit descriptor

VCI

virtual circuit identifier

VCR

Virtual Configuration Register

VINES

Virtual Network System

VLAN

virtual LAN

VMPS

VLAN Membership Policy Server

VTP

VLAN Trunking Protocol

VVID

voice VLAN ID


W
 

WFQ

weighted fair queueing

WRED

weighted random early detection

WRR

weighted round-robin


X
 

XNS

Xerox Network System