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Configuring Power Over Ethernet
December 2005
© Foundry Networks, Inc.
6 - 5
Cabling Requirements
The 802.3af standard currently supports POE on 10/100/1000 Mbps Ethernet ports operating over standard
Category 5 unshielded twisted pair (UTP) cable or better. If your network uses cabling categories less than 5, you
cannot implement POE without first upgrading your cables to CAT 5 UTP or better.
Supported Powered Devices
Foundry’s FSX POE devices support the following types of IP powered devices:
•
Voice over IP (VoIP) phones
•
Wireless LAN access points
•
IP surveillance cameras
The following sections briefly describe these IP powered devices.
VoIP
Voice over IP (VoIP) is the convergence of traditional telephony networks with data networks, utilizing the existing
data network infrastructure as the transport system for both services. Traditionally, voice is transported on a
network that uses circuit-switching technology, whereas data networks are built on packet-switching technology.
To achieve this convergence, technology has been developed to take a voice signal, which originates as an analog
signal and transport it within a digital medium. This is done by devices, such as VoIP Telephones, which receive
the originating tones and place them in UDP packets, the size and frequency of which is dependant on the Coding
/ Decoding (CODEC) technology that has been implemented in the VoIP Telephone / device. The VoIP control
packets use the TCP/IP format.
Wireless LAN Access Points
Wireless LANs enable you to establish and maintain a wireless network connection within or between buildings,
without the constraints of wires or cables as imposed by a wired LAN. Wireless LAN access points provide the link
between the wired LAN and the wireless LAN.
Foundry’s IronPoint™ Access Point allows wireless clients to connect to your enterprise network. It is a full-
featured access point that can be managed as a single device or by IronView Network Manager, a network
management tool that manages several Foundry devices on a network. For more information about Foundry’s
IronPoint Access Point, see
the IronPoint documentation on the Foundry technical support website.
One of the main concerns with wireless LAN access points is the additional protection needed to secure the
network. To help ensure continuous security against unauthorized Wireless LAN Access Points deployment, and
deliver advanced security for entry-level WLAN Access Points, the Foundry’s POE devices include IEEE 802.1x
support for a flexible and dynamic security implementation. All switch ports can be configured as secured,
requiring 802.1x authentication, or unsecured, requiring no authentication. For more information about this
feature, refer to the
Foundry Security Guide
.
IP Surveillance Cameras
IP surveillance technology provides digital streaming of video over Ethernet, providing real-time, remote access to
video feeds from cameras.
The main benefit of using IP surveillance cameras on the network is that you can view surveillance images from
any computer on the network. If you have access to the Internet, you can securely connect from anywhere in the
world to view a chosen facility or even a single camera from your surveillance system. By using a Virtual Private
Network (VPN) or the company intranet, you can manage password-protected access to images from the
surveillance system. Similar to secure payment over the Internet, images and information are kept secure and can
be viewed only by approved personnel.
Enabling or Disabling Power over Ethernet
To enable a port to receive in-line power for 802.3af-compliant and non-compliant power consuming devices, enter
commands such as the following:
FastIron SuperX Router# config t
Summary of Contents for FastIron Edge Switch X424
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