166GLOSSARY

IP

Internet Protocol. IP is a layer 3 network protocol that is the standard

 

for sending data through a network. IP is part of the TCP/IP set of

 

protocols that describe the routing of packets to addressed devices.

IPX

Internetwork Packet Exchange. IPX is a layer 3 and 4 network protocol

 

designed for networks that use Novell® Netware®.

IP address

Internet Protocol address. A unique identifier for a device attached to a

 

network using TCP/IP. The address is written as four octets separated

 

with periods (full-stops), and is made up of a network section, an

 

optional subnet section and a host section.

LAN

Local Area Network. A network of endstations (such as PCs, printers,

 

servers) and network devices (hubs and switches) that cover a relatively

 

small geographic area (usually not larger than a floor or building). LANs

 

are characterized by high transmission speeds over short distances (up

 

to 1000m).

LLC

Logical Link Control. A sublayer of the IEEE data link layer that is

 

located above the MAC sublayer. The LLC sublayer is responsible for

 

MAC sublayer addressing, flow control, error control, and framing.

latency

The delay between the time a device receives a packet and the time the

 

packet is forwarded out of the destination port.

line speed

See baud.

load sharing

Load sharing allows a user to increase the bandwidth and resilience

 

between switches by using a group of ports to carry traffic between

 

the switches.

loop

An event that occurs when two network devices are connected by

 

more than one path, thereby causing packets to repeatedly cycle

 

around the network and not reach their destination.

MAC

Media Access Control. A protocol specified by the IEEE for determining

 

which devices have access to a network at any one time.

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3Com 9100 manual IP address, Latency, Line speed, Loop