Glossary

Ethernet

A type of network that supports high-speed communication among systems. It is a

 

widely-implemented standard for LANs. All hosts are connected to a coaxial cable where

 

they contend for network access using a Carrier Sense, Multiple Access with Collision

 

Detection (CSMA/CD) paradigm.

Ethernet address

A six-part hexadecimal number in which a colon separates each part (for example,

 

8:0:20:1:2f:0). This number identifies the Ethernet communications board installed in a PC

 

and is used to identify the PC as a member of the network.

filter

A rule or set of rules applied to a specific interface to indicate whether a packet can be

 

forwarded or discarded.

FTP

File Transfer Protocol. A TCP/IP standard protocol that allows a user on one host to

 

access and transfer files to and from another host over a network, provided that the client

 

supplies a login identifier and password to the server.

gateway address

The subnet that the end-user system is on.

GranDSLAM

A high-density DSLAM supporting a variety of DSL transport types and network services.

HDLC

High-Level Data Link Control. A communications protocol defined by the International

 

Standards Organization (ISO).

host

A computer attached to a network that shares its information and devices with the rest of

 

the network.

host route

An IP address having a subnet mask of 255.255.255.255.

ICMP

Internet Control Message Protocol. An Internet protocol that allows for the generation of

 

error messages, test packets, and information messages related to IP.

Internet

The worldwide internetwork that predominantly uses the TCP/IP protocol.

intranet

A private network or internet using Internet standards and software, but protected from

 

public access.

IP

Internet Protocol. An open networking protocol used for internet packet delivery.

IP address

Internet Protocol Address. The address assigned to an Internet host.

ISP

Internet Service Provider. A vendor who provides direct access to the Internet.

LAN

Local Area Network. A privately owned and administered data communications network

 

limited to a small geographic area.

MAC

Media Access Control. The lower of the two sublayers of the data link layer, the MAC

 

sublayer controls access to shared media.

MAC address

Media Access Control Address. The unique fixed address of a piece of hardware, normally

 

set at the time of manufacture, and used in LAN protocols.

margin (DSL)

The additional noise, measured in dB, that would need to be added to the existing noise on

 

a given DSL loop to bring the Bit Error Rate to IE–7 (107).

MCC Card

Management Communications Controller. The DSLAM circuit card used to configure and

 

monitor the DSLAM.

MIB

Management Information Base. A database of managed objects used by SNMP to provide

 

network management information and device control.

NAP

Network Access Provider. The provider of the physical network that permits connection of

 

service subscribers to NSPs.

NMS

Network Management System. A computer system used for monitoring and controlling

 

network devices.

GL-2

April 2000

8000-A2-GB20-50

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Paradyne 8546 Ethernet address, Filter, Gateway address, GranDSLAM, Host route, Internet, Intranet, MAC address