Motorola SVG2500 User Manual page 136

This document is uncontrolled pending incorporation in PDM
17 GLOSSARY
TERM
MHz
MPDU
MSDU
MSO
MTU
Multicast
mW
N
TERM
NAS
NAT
NAPT
NEC
network
network driver
network layer
DEFINITION
Megahertz — one million cycles per second. A measure of
radio frequency.
MAC protocol data unit (PDU)
MAC service data unit.
Multiple Systems Operator. A company that owns and operates
more than one cable system. Also called a group operator.
The Maximum Transmission Unit is the largest amount of data
that can be transmitted in one discrete message on a given
physical network. The MTU places an upper bound on the size
of a message that can be transferred by the network in a single
frame. Messages exceeding the MTU must be fragmented
before transmission and reassembled at the destination.
A data transmission sent from one sender to multiple
receivers. See also broadcast and unicast.
milliwatts
DEFINITION
Network access server
Network Address Translation is an Internet standard for a LAN to
use one set of IP addresses for internal traffic and a second set
of IP addresses for external traffic.
Network Address Port Translation is the most common form of
address translation between public and private IP addresses.
NAPT is a mapping of one public IP address to many private
IP addresses. If NAPT is enabled on the Basic Setup Page,
one public IP address is mapped to an individual private IP
address for up to 245 LAN clients.
National Electrical Code (United States) — The regulations
for construction and installation of electrical wiring and
apparatus, suitable for mandatory application by a wide range of
state and local authorities.
Two or more computers connected to communicate with each
other. Networks have traditionally been connected using some
kind of wiring.
Software packaged with a NIC that enables the computer to
communicate with the NIC.
Layer 3 in the OSI architecture that provides services to
150