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Power over Ethernet

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ALSO CALLED: PoE
DEFINITION: Power over Ethernet (PoE) is a technology for wired Ethernet LANs (local area networks) that allows the electrical current, necessary for the operation of each device, to be carried by the data cables rather than by power cords. This minimizes the number of wires that must be strung in order to install the network. The result is lower cost, less downtime, easier maintenance, and greater installation  … 
Definition continues below.
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sponsored by Cisco Systems, Inc.
TRIAL SOFTWARE: Download your free trial of Cisco Prime LAN Management Solution, an integrated suite of management functions to help you simplify the configuration, administration, monitoring, and troubleshooting of networks and technologies.
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Cisco Systems, Inc.

Cisco Prime LAN Management Solution 4.2. Virtual Appliance
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TRIAL SOFTWARE: Download your free trial of Cisco Prime LAN Management Solution for Virtual Appliance, an integrated suite of management functions to improve the configuration, administration, monitoring, and troubleshooting of your network.
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Posted: 19 Aug 2009 | Premiered: 01 Aug 2009

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sponsored by Hitachi Data Systems
SOFTWARE DOWNLOAD: Hitachi IT Operations Analyzer delivers all-in-one monitoring for the data center. A single interface provides a view to the availability and performance of servers and network and storage devices on a network. It eases troubleshooting without agents.
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IBM Service Management for Communication Service Providers
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POWER OVER ETHERNET DEFINITION (continued): …  flexibility than with traditional wiring.For PoE to work, the electrical current must go into the data cable at the power-supply end, and come out at the device end, in such a way that the current is kept separate from the data signal so that neither interferes with the other. The current enters the cable by means of a component called an injector. If the device at the other end of the cable is PoE compatible, then that device will function properly without modification. If the device is not PoE compatible, then a component called a picker or tap must be installed to remove the current from the … 
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