Symbol Technologies manual GL-2ES3000 User Guide

GL-2ES3000 User Guide

Backbone	The part of a network used as a primary path for transporting traffic between network
	segments.
Bandwidth	The information capacity, measured in bits per second, that a channel could transmit.
	Bandwidth examples include 10 Mbps for Ethernet, 100 Mbps for Fast Ethernet, and
	1000 Mbps (I Gbps) for Gigabit Ethernet.
Baud	The signaling rate of a line, that is, the number of transitions (voltage or frequency
	changes) made per second. Also known as line speed.
Broadcast	A packet sent to all devices on a network.
Broadcast storm	Multiple simultaneous broadcasts that typically absorb all the available network
	bandwidth and can cause a network to fail. Broadcast storms can be due to faulty
	network devices or network loops.
Capacity planning	Determining whether current solutions can satisfy future demands. Capacity planning
	includes evaluating potential workload and infrastructure changes.
Class of Service	A term to describe treating different types of traffic with different levels of service
	priority. Higher priority traffic gets faster treatment during times of switch congestion
Collision	A term used to describe two colliding packets in an Ethernet network. Collisions are
	a part of normal Ethernet operation, but a sudden prolonged increase in the number
	of collisions can indicate a problem with a device, particularly if it is not accompanied
	by a general increase in traffic.
Endstation	A computer, printer, or server that is connected to a network.
Ethernet	A LAN specification developed jointly by Xerox, Intel and Digital Equipment
	Corporation. Ethernet networks transmit packets at a rate of 10 Mbps.
Fast Ethernet	An Ethernet system that is designed to operate at 100 Mbps.
Gigabit Ethernet	An Ethernet system that is designed to operate at 1000 Mbps (1 Gbps).
Fault isolation	A technique for identifying and alerting administrators about connections (such as
	those associated with switch ports) that are experiencing congestion or failure, or
	exceeding an administrator-defined threshold.
Forwarding	The process of sending a packet toward its destination using a networking device.
Filtering	The process of screening a packet for certain characteristics, such as source address,
	destination address, or protocol. Filtering is used to determine whether traffic is to
	be forwarded, and can also prevent unauthorized access to a network or network
	devices.
Flow control	A congestion- control mechanism. Congestion is caused by devices sending traffic to
	already overloaded port on a switch. Flow control prevents packet loss and
	temporarily inhibits devices from generating more traffic until the period of
	congestion ends.