3Com 16985ua.bk manual Broadcast, Collision, Endstation, Fast Ethernet, Forwarding, Filtering

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50GLOSSARY

 

information to forward packets based on their destination address. This

 

process is known as filtering.

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.

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.

CSMA/CD

Carrier-sense Multiple Access with Collision Detection. The protocol

 

defined in Ethernet and IEEE 802.3 standards in which devices transmit

 

only after finding a data channel clear for a period of time. When two

 

devices transmit simultaneously, a collision occurs and the colliding

 

devices delay their retransmissions for a random length of time.

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 use CSMA/CD to transmit

 

packets at a rate of 10Mbps over a variety of cables.

Ethernet address

See MAC address.

Fast Ethernet

An Ethernet system that is designed to operate at 100Mbps.

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 inhibits devices from generating more traffic

 

until the period of congestion ends.

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Contents SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents PIN -OUTS Page Page About this Guide Convention Description ConventionsIcon Description Related DocumentationComments YearCompliance ProductIntroducing the Switch 3300 MM About SuperStack Switch 3300 MM Summary of FeaturesSwitch 3300 MM Front View Detail Switch 3300 MM front viewUnit LEDs Power/Self Test LEDColor Indicates Port Status LEDs Switch 3300 MM Rear View Detail Power SocketUnits on Network ConfigurationSwitch 3300 MM as a ExamplesSwitch Using the Switch as a collapsed backboneUsing the Switch in a desktop environment Fast Ethernet configuration rules Configuration Rules with Full Duplex Introducing the Switch 3300 MM Installing the Switch Rack-mounting Repeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack mountingStacking Units Treated as a single manageable unit with one IP addressStacking Units Stack of three units Switch 3300 MM Power-upPowered-up and ready for operation SequencePort, you need a cross-over cable. Most of the 10BASE-T ChoosingCorrect Cables Color StateProblem Managing SwitchNetwork. For information on managing the Switch using GuideSafety Information Personnel only Important SafetyInformation Important Safety Information Personnel qualifié ’information deSécurité Importante Étroites’information de Sécurité Importante Wichtige Sicherheitsinformat ionen Pin to RS-232 25-pin Null Modem CablePC-AT Serial Cable Pin to 9-pinModem Cable ConnectorsPin Number Signal Function RJ45 PinPin Number Signal Function Appendix B PIN-OUTS Power Supply Physical DimensionsSafety Environmental RequirementsVlan MIB RFC Services Online TechnicalUsername anonymous Europe, South Africa, and Middle East Country Telephone Number Asia, Pacific RimCountry Telephone Number Fax Number Glossary Endstation BroadcastCollision EthernetLine speed See baud Protocol LoopMulticast RepeaterSuperStack ServerStack TelnetGlossary Index Index 3Com Corporation Limited Warranty Page Disclaimer Regulatory Notices

16985ua.bk specifications

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