ieee 802.3af

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Demo 08: Green Plug debuts universal power supply

Demo 08: Green Plug debuts universal power supplyUSB somehow became the "universal" power supplyhttp://blogs.zdnet.com/Ou/?p=467USB somehow became the "universal" power supply. 802.3af is also another "universal" power supply. Oh what I wouldn't give for a laptop that could sip power from 802.3af or full blow 802.3at to get full...

Tags: power supply, Green Plug, IEEE 802.3af

Discussion threads 2008-01-29

The dream of the universal power connector becoming a reality

Ive dreamed of a universal power connector for small electronic devices for years but Ive come to the conclusion that it will never happen because there is simply too much money to be made in selling proprietary power adapters. But in a strange turn of events, I may be...

Tags: Consumer electronics, Networking, Mobile/Wireless, Infrastructure, Hardware, Energy efficiency

Blog posts 2007-04-11

802.3af Power Over Ethernet on the cheap

802.3af Power Over Ethernet on the cheapBeg to differ (of course, what else would you expect?!)"[i]You can't do advanced functions like VLAN separation on a cheap switch like this to separate your Voice devices from your data network[/i]"[url=http://www.geek-pages.com/articles/latest/dd-wrt_-_setting_up_a_separate/isolated_vlan_on_port_4_with_dhcp.html]fyi[/i], you can do VLAN on a cheap ($59) Linksys WRT54GL.But this whole...

Tags: LANs, VLAN, Power over Ethernet, IEEE 802.3af

Discussion threads 2007-02-02

802.3af Power Over Ethernet on the cheap

Anyone interested in IP Telephony or remote video cameras that draw power over an Ethernet cable has to be interested in some cheap 802.3af PoE Power Over Ethernet gear. Well I found just the thing with this AirLink 8 port 10/100 Ethernet switch with 4 802.3af PoE ports on...

Tags: Security, Infrastructure, Networking, Fun Stuff, Hardware, VoIP, IEEE 802.3af, PoE

Blog posts 2007-02-01

Add power with a homemade 802.3af compliant wireless networking device

This chapter excerpt from Wireless Hacks: Tips & Tools for Building, Extending, and Securing Your Network explains how to insert DC voltage into a standard Ethernet cable. Since June 2003, when the IEEE ratified the 802.3af standard for Power over Ethernet PoE, several prominent manufacturers have released...

Tags: IEEE 802.3af, Network, O'Reilly Media Inc., Wireless Networking, Ethernet, Wi-Fi, Wireless, Networking

Book chapters 2006-01-18

Why you should be thinking about Power over Ethernet

We've had non-stop power for our telephones for ages. Thanks to the IEEE 802.3af draft standard, that same functionality is finally working its way into our networking gear. It's about time. If you haven't done so already, perhaps now is a good time to start...

Tags: IEEE 802.3af, Phone, Device, PowerDsine, Network, Power Supply, Power Over Ethernet, Uninterruptible Power Supply, Access Point, DTE, Ethernet, Networking, Wireless And Mobility, David Berlind

News items 2003-01-21

Power Over Ethernet (PoE): The IEEE 802.3af Standard for Power Distribution in Ethernet Networks

Local networks today cannot be imagined without Ethernet anymore. The protocol, developed in the mid 70s in the U.S., is very popular among network administrators thanks to its simple installation, hassle-free maintenance and comparably low costs. However, an increased deployment of wireless transmission technologies like Wireless-LAN, Bluetooth or DECT, let...

Tags: IEEE 802.3af, Network, Power Over Ethernet, Reichle & De-Massari, Ethernet, Networking, Network Technology

White papers 2003-01-09

Additional Resources

Power Over Ethernet Plus

The standard for Power over Ethernet PoE, IEEE Std. 802.3af-2003, helped increase the value of an Ethernet port by connecting and powering devices such as IP Phones using a common network infrastructure. An upcoming PoE standard known as Power over Ethernet Plus PoE Plus or IEEE P802.3at promises to deliver...

Tags: Power Over Ethernet, Ethernet Alliance, Ethernet, Networking

White papers 2008-04-01

Enhanced Power Over Ethernet: Easier Deployment and Improved Mobility

Cisco was the first to develop the capability of providing power to the network end device when it enabled a means of providing power from an Ethernet switch port to its Cisco IP phone. From there, Cisco began work with numerous other vendors within the IEEE to create a standards-based...

Tags: Mobility, Cisco Systems Inc., Power Over Ethernet, Cisco Enhanced Power Over Ethernet, Ethernet, Networking

White papers 2008-02-01

Cable Verification for Power Over Ethernet: Ensuring Service Success

IP and Ethernet link the world. This ubiquitous connectivity supports the services that let businesses do more and be more efficient. Some of the newest and most exciting are Voice over IP VoIP telephony, wireless LANs, network-based security and mobile data capture. These services add devices to the enterprise network,...

Tags: Data Capture, Power Over Ethernet, Cable, Fluke, Telephony, VOIP, Telecommunications, Networking

White papers 2007-01-01

Power Over Ethernet on Cisco Catalyst 6500 Series Switches

This paper describes the Power over Ethernet PoE capabilities for Cisco Catalyst 6500 Series Switches for both Cisco prestandard Inline Power as well as the standards-based IEEE 802.3af inline-power solutions. The Cisco Catalyst 6500 Series from Cisco Systems provides inline power on specific 10/100 and 10/100/1000 Ethernet modules (listed in...

Tags: Cisco Systems Inc., Power Over Ethernet

White papers 2006-03-01

Foundry gear clears up voice services

The network services company's new switches are designed for more reliable voice on local area networks, and a new router is geared for service providers. Foundry Networks will deliver Power on Ethernet versions of all its local area network switches, making voice services on the LANs more reliable. ...

Tags: Peter Judge, Hardware, Warning: DOMDocument::loadXML() [domdocument.loadxml]: Empty string supplied as input in /var/opt/include/classes/traxapi.class.php on line 47, Warning: Invalid argument supplied for foreach() in /var/opt/include/classes/traxapi.class.php on line 55

News items 2003-03-12

Driving down the costs of enterprise WiFi

Symbol's pitch: Move WLAN management out of the access points and into the switch. Although the advantages of this approach appear almost endless, their pitch has one hitch. If you take a minute to listen to the wireless pitchmen at Symbol Technologies, the basic message is...

Tags: Network, Switch, WLAN, Symbol Technologies Inc., VLAN, Access Point, Wireless, ESSID, MAAP, LANs, Wireless And Mobility, Wireless LANs, Wi-Fi, Security Administration, Networking, Security, David Berlind

News items 2002-09-29

South Africa's Coffee Houses Set to Go Wireless in Seattle

Originated in the USA, the international Seattle Coffee Company organisation was taken over by Starbucks in 2003. Retaining the original brand name, Seattle Coffee Company now has 23 outlets. Seattle Coffee Company needed reliable hardware so that it could deploy, and then not have to worry the wireless network. Its...

Tags: Hewlett-Packard Co., Access Point, Wireless, Wi-Fi

Case studies