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Last modified: Wednesday, September 22, 2004 

(swich) (n.) (1) In networks, a device that filters and forwards packets between LAN segments. Switches operate at the data link layer (layer 2) and sometimes the network layer (layer 3) of the OSI Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs.

(2) A small lever or button. The switches on the back of printers and on expansion boards are called DIP switches. A switch that has just two positions is called a toggle switch.

(3) Another word for option or parameter -- a symbol that you add to a command to modify the command's behavior.

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For pages about switch . Also check out the following links!

Related Links

Network Switching Tutorial 
How can you tell if your network will benefit from switching? And how do you add switches to your network design for the most benefit? This tutorial is written to answer these questions.

Switch Buyer's Directory
LAN Times site with information finding the right switches for your needs and budget. The directory features switches in nearly all categories: ATM, ethernet, Fast Ethernet, Gigabit Ethernet, FDDI, and token ring.

Sponsored listings

Audio Showcase: Serial Switch Boxes - Provides serial switch boxes, audio and video cable and accessories online, including VGA splitters, F coaxial splitters, and Monster RF splitters.

IBM: SAN Switch F32 - Official website for SAN switch F32 products manufactured by IBM.

IBM: SAN Switch M12 - Official website for SAN switch M12 products manufactured by IBM. Industrial Switch Magnets - Provides database of suppliers for Industrial Switch Magnets. Browse catalogs and view technical information.

eBay: Serial Switch Boxes - Online marketplace for buying and selling serial switch boxes.

related categories

Business Computing


Networking Hardware

related terms




DIP switch



routing switch

switched Ethernet


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