HP 5300 Informacje Techniczne Pobierz pdf (Strona 192)

Power Over Ethernet (PoE) Operation

Introduction

Overview of Operation

A J8161A xl PoE module is a PSE device that receives PoE power from an

external HP 600 RPS/EPS and distributes this power to the PDs connected to

the xl PoE module’s RJ-45 ports. The xl PoE module receives either 204 watts

or 408 watts from the HP 600 RPS/EPS, depending on whether the RPS/EPS

is supporting one or two PSE devices.

Note You can connect either a PoE device (PD) or a non-PoE device to a port

configured for PoE operation on a J8161A xl PoE module.

Regarding Cat-5 cabling for PoE, the 802.3af standard allows either the spare

pin/wire pairs or the data pin/wire pairs for PoE power transmission. A PoE

module installed in a series 5300xl device supplies PoE power over the data

pin/wire pairs. For more on this topic, refer to the PoE Planning and Imple-

mentation Guide (p/n 5990-6045, Nov. 2003 or later) available on the HP

ProCurve website. (See

“Getting Documentation From the Web” on page 1-5.)

Using the commands described in this chapter, you can:

■ Configure a non-default power threshold for SNMP and Event Log

reporting of PoE consumption on either all PoE ports on the switch

or on all PoE ports in one or more PoE modules.

■ Specify the port priority you want each xl PoE module to use for

provisioning PoE power in the event that a given module’s PoE

resources become oversubscribed.

■ Enable or disable PoE operation on individual ports. (In the default

configuration, and with software release E.08.XX or greater installed,

each xl PoE module installed in the switch enables PoE power on all

10/100-TX ports in the module, subject to PoE priority if the PoE

resources on a given PoE xl module are oversubscribed.)

■ Monitor PoE status and performance per module.

Related Publications

This chapter introduces general PoE operation, PoE configuration and mon-

itoring commands, and Event Log messages related to PoE operation on an

HP ProCurve Switch Series 5300xl device with one or more PoE modules

installed and supported by the necessary external power supplies. The follow-

ing two manuals provide further information:

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HP 5300 Informacje Techniczne Strona 192