Appendix D: Glossary
The Glossary section defines the terms used in this User Manual
Term
Definition
Ethernet
Local Area
Network technology, originally developed by
Xerox Corporation,
can link up to 1,024 nodes in a bus
network.
Ethernet provides raw data
transfer in a
rate of 10 megabits/sec. with actual throughputs in 2 to 3
megabits/sec. using a baseband (single-channel) communication technique.
Ethernet uses carrier sense multiple access collision detection (CSMA/CD)
that prevents network failures when
two devices attempt to access the
network at the same time.
LAN hardware manufacturers use Ethernet
protocol; their products
may always not be
compatible.
Gateway
A computer that attaches to a number of networks and routes packets
between them.
The packets can be different protocols at higher levels.
IP
Internet Protocol – The TCP/IP standard protocol
defines the IP datagram
as a
unit of information passed across a network.
IP
Address
Internet Protocol Address – A 32-bit
address assigned to hosts participating in
a TCP/IP network.
The IP address consists
of network and host portions.
It is assigned to an interconnection
of a host to
a physical network.
MAC
Medium Access Control
- The network layer between the physical and the
data link
layers.
Specifically, the physical (hardware) address exists in this
layer.
MIB
Management Information Base – The database, i.e. set of variables
maintained by a gateway running SNMP
NMS
Network Management Station
OID
Object Identifier – The variables defined in a MIB
Router
A computer that manages traffic between different network segments or
different network topologies.
It directs the destination IP address.
The
network media can be different, but the higher-level protocols must be the
same.
SNMP
Simple Network Management Protocol – A standard protocol used to monitor
IP hosts, networks, and
gateways.
SNMP defines a set of
simple
operations that can be performed on the OIDs of the MIBs managed by the
monitored Agents.
It employs the UDP/IP transport layer to move its object
between the Agents and the NMS
TCP/IP
Transmission Control Protocol/ Internet Protocol – A protocol suite used
by
more than 15 million users with a UNIX association and widely used to link
computers of different kinds.
IP Camera Manual 63
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