HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide

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Planning Considerations
This appendix is divided into five sections:
■ General Considerations
■ Specific Considerations for the HP 2910al-PoE Switches
■ Specific Considerations for the HP 3500-PoE Switches
■ Specific Considerations for the HP 3500yl-PWR Switches
■ Specific Considerations for the HP 5400zl/E8200zl Switches
These lists are in no way exhaustive, however answers to these and other
questions will help define how many and what types of switches are needed
to implement a PoE configuration.
General Considerations
The following is an example list of considerations during the planning phase
no matter which series of switches are being installed:
■ How many devices need PoE power?
■ What devices will need PoE power?
■ How much power will each device require, in watts?
■ What is the total of all their wattages?
■ Will the devices be connected to a 2910al, 3500yl, 5400zl or to a 8200zl
switch?
■ How many ports are needed?
■ How many ports are available?
■ Are the devices to be powered by PoE power supported?
The HP Switches covered in this manual support any products that meet
the IEEE 802.3at standard and the IEEE 802.3af PoE standard and some
pre-standard PoE devices. For a current list, see the FAQ page for your
switch, which can be found at
www.hp.com/networking/support.
■ How many PDs per Switch?