17 GLOSSARY

 

TERM

DEFINITION

bridge

An OSI layer 2 networking device that connects two LANs using

 

similar protocols. It filters frames based on the MAC address

 

to reduce the amount of traffic. A bridge can be placed

 

between two groups of hosts that communicate a lot

 

together, but not so much with the hosts in the other group.

 

The bridge examines the destination of each packet to

 

determine whether to transmit it to the other side. See also

 

switch.

broadband

High bandwidth network technology that multiplexes

 

multiple, independent carriers to carry voice, video, data, and

 

other interactive services over a single cable. A communications

 

medium that can transmit a relatively large amount of data in a

 

given time period. A frequently used synonym for cable TV

 

that can describe any technology capable of delivering multiple

 

channels and services.

broadcast

Simultaneous transmission to multiple network devices; a

 

protocol mechanism supporting group and universal

 

addressing. See also multicast and unicast.

C

 

TERM

DEFINITION

CableHome

A project of CableLabs and technology suppliers to develop

 

interface specifications for extending high-quality, cable-based

 

services to home network devices. It addresses issues such as

 

device interoperability, QoS, and network management.

 

CableHome will enable cable service providers to offer more

 

services over HFC. It will improve consumer convenience by

 

providing cable-delivered services throughout the home.

CableLabs

A research consortium that defines the interface

 

requirements for cable modems and acknowledges that tested

 

equipment complies with DOCSIS.

cable modem

A device installed at a subscriber location to provide data

 

communications over an HFC network. Unless otherwise

 

specified, all references to “cable modem” in this

 

documentation refer to DOCSIS or Euro-DOCSIS cable

 

modems only.

cable modem configuration file

File containing operational parameters that a cable modem or gateway downloads from the Internet Service provider TFTP server during registration.

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Motorola SVG2500 manual Bridge, Broadband, Broadcast, CableHome, CableLabs, Cable modem configuration file