Prestige 642 PPPoE Modem

 

 

attached. A LAN, as its name implies, is limited to a local area. This has to do more

 

 

 

with the electrical characteristics of the medium than the fact that many early LANs

 

 

 

were designed for departments, although the latter accurately describes a LAN as well.

 

 

 

LANs have different topologies, the most common being the linear bus and the star

 

 

 

configuration.

 

 

 

 

 

LED

 

Light Emitting Diode. LEDs are visual indicators that relay information about the

 

 

 

status of specific MI1951 functions to the user by lighting up, turning off or blinking.

 

 

 

LEDs are usually found on the front panel of the physical device. Examples include

 

 

 

Status, Power and System LEDS.

 

 

 

 

 

LLC-

 

One VC carries multiple protocols with protocol identifying information being

 

Multiplexing

 

contained in each packet header. Despite the extra bandwidth and processing overhead,

 

 

 

this method my be advantageous if it is not practical to have a separate VC for each

 

 

 

carried protocol, eg., if charging heavily depends on the number of simultaneous VCs.

 

 

 

 

 

Loop-reach

 

Loop reach defines speed that can be attained at various distances. This is very

 

 

 

important for DSL technology as distance from the CO (Central Office) influences

 

 

 

attainable speeds.

 

 

 

 

 

MAC

 

On a local area network (LAN) or other network, the MAC (Media Access Control)

 

 

 

address is a computer's unique hardware number. (On an Ethernet LAN, it's the same

 

 

 

as your Ethernet address). The MAC layer frames data for transmission over the

 

 

 

network, then passes the frame to the physical layer interface where it is transmitted as

 

 

 

a stream of bits.

 

 

 

 

 

Multiplexor

 

Multiplexors or MUXs, as they are often called, are devices that combine signals from

 

 

 

various sources such as PBX (Private Branch Exchange), asynchronous terminals or a

 

 

 

bridge connected to a WAN. A multiplexor transmits these signals as a single data

 

 

 

stream over a digital line. Multiplexors, among other tasks, conserve bandwidth.

 

 

 

 

 

NAT

 

Network Address Translation is the translation of an Internet Protocol address used

 

 

 

within one network to a different IP address known within another network - see also

 

 

 

SUA.

 

 

 

 

 

Network

 

Any time you connect two or more computers together, allowing them to share

 

 

 

resources, you have a computer network. Connect two or more networks together and

 

 

 

you have an internet.

 

 

 

 

 

NIC

 

Network Interface Card. A board that provides network communication capabilities to

 

 

 

and from a computer system. Also called an adapter.

 

 

 

 

 

Node

 

Any single computer connected to a network.

 

 

 

 

 

PAP

 

Password Authentication Protocol is a security protocol that requires users to enter a

 

 

 

password before accessing a secure system. The user’s name and password are sent

 

 

 

over the wire to a server where they are compared with a database of user account

 

Glossary

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