Power over Ethernet White Papers ( PoE ) Software Downloads, Definition and Webcasts

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Dec 4, 2009

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IT Systems > Communications Networks > LAN > Ethernet Networks >
Power over Ethernet
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.
Power over Ethernet Reports
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eGuide: 10Gb Ethernet-- What You Need to Know sponsored by Gigamon EGUIDE: Read this eGuide to learn the latest information about 10Gb Ethernet networks and to get useful insight into how to select the best components to optimize your network, traffic, and data center. Posted: 22 Sep 2009 \| Published: 22 Sep 2009 TOPICS: 10 Gigabit Ethernet \| Data Center Management \| Ethernet Cable \| Ethernet Networks \| Ethernet Switches \| iSCSI SAN \| Network Management \| Network Traffic Analysis \| Network Traffic Management \| Networking

Ethernet 10/100/1000 Copper Taps, Passive or Active? sponsored by Gigamon WHITE PAPER: This article presents an overview of the various Ethernet 10/100/1000 physical layer technologies for the copper medium. It discusses the pros and cons of active versus passive tapping and why active tapping is preferred for Gigabit Ethernet running over the copper medium. The switch-over behavior of active relay-based tapping is also presented. Posted: 01 Jul 2009 \| Published: 01 Jul 2009 TOPICS: Ethernet Networks \| Gigabit Ethernet \| Network Management \| Network Monitoring \| Network Performance \| Network Processing \| Network Traffic Analysis

How a Spanning Tree Works sponsored by Global Knowledge WHITE PAPER: The way a switch learns Ethernet (MAC) addresses is by inspecting the Ethernet frame and recording the source MAC address in a dynamic table. The switch will also associate a learned MAC address with a port. It can then make intelligent forwarding decisions based on the destination MAC address. This white paper illustrates the process. Posted: 29 Jun 2009 \| Published: 29 Jun 2009 TOPICS: CAM-I \| Content Addressable Memory \| Ethernet Networks \| Ethernet Switches \| Switched Ethernet \| Switches \| Switching

Power Monitoring 101 sponsored by Eaton Corporation WHITE PAPER: Read this white paper to learn how the right power monitoring system can protect your organization's data and applications while optimizing the power delivery infrastructure for efficiency and lower cost. Posted: 04 Aug 2009 \| Published: 04 Aug 2009 TOPICS: Data Center Infrastructure Efficiency \| Data Center Management \| Data Center Power Management \| Ethernet Networks \| IT Infrastructure \| IT Systems \| LAN \| Power Consumption Monitoring

Router Essentials sponsored by Global Knowledge WHITE PAPER: Build a basic foundation of knowledge about routers, the devices that allow you to move packets between networks, by reading this white paper. Posted: 10 Dec 2008 \| Published: 10 Dec 2008 TOPICS: Ethernet Networks \| Network Infrastructure \| Network Management \| Network Protocols \| RAM \| Routers \| Switches \| Training and Educational Services

Secure and Cost-Effective Data Transport- Presentation slides sponsored by Thales PRESENTATION: Do you know what data transport technology options are available in today's market? This paper will help you assess economic, operational, and security factors involved in selecting data transport technology and present Ethernet carrier services as an attractive data transport option. Posted: 13 May 2009 \| Published: 13 May 2009 TOPICS: Data Encryption \| Data Governance \| Data Integration \| Data Management \| Data Migration \| Data Security \| Database Administration \| Database Management \| Databases \| Ethernet Networks \| Information Management \| Information Security \| Knowledge Management \| LAN \| WAN

The Case for Virtual Local Area Networks (VLANs) sponsored by Global Knowledge WHITE PAPER: In this whitepaper you will learn about the evolution of Ethernet, the reasons VLANs were introduced, and the ways that VLANs can be used. Posted: 10 Dec 2008 \| Published: 10 Dec 2008 TOPICS: Ethernet Networks \| Manufacturing \| VLAN \| WAN \| WAN Hardware \| WAN Switches \| WAN Switching

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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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