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Power Over Ethernet (PoE) Operation

Contents

PoE Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

Introduction to PoE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4

Overview of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5

Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6

General PoE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

PD Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

Determining the Amount of PoE Power Available . . . . . . . . . . . . . . 11-10

PoE Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10

Power Priority Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10

When Is Power Allocation Prioritized? . . . . . . . . . . . . . . . . . . . . 11-10

How Is Power Allocation Prioritized? . . . . . . . . . . . . . . . . . . . . . 11-11

PoE Priority With Two or More Modules . . . . . . . . . . . . . . . . . . 11-12

Configuring PoE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14

Changing the PoE Port Priority Level . . . . . . . . . . . . . . . . . . . . . . . . . 11-14

Disabling or Re-Enabling PoE Port Operation . . . . . . . . . . . . . . . . . 11-15

Enabling Support for Pre-Standard Devices . . . . . . . . . . . . . . . . . . . 11-15

Changing the Threshold for Generating a Power Notice . . . . . . . . . 11-16

Configuring Optional PoE Port Identifiers . . . . . . . . . . . . . . . . . . . . . 11-17

Viewing PoE Configuration and Status . . . . . . . . . . . . . . . . . . . . . . . 11-19

Displaying the Switch’s Global PoE Power Status . . . . . . . . . . . . . . 11-19

Displaying an Overview of PoE Status on All Ports . . . . . . . . . . . . . 11-20

Displaying the PoE Status on Specific Ports . . . . . . . . . . . . . . . . . . . 11-21

Planning and Implementing a PoE Configuration . . . . . . . . . . . . . . 11-23

Assigning PoE Ports to VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-23

Applying Security Features to PoE Configurations . . . . . . . . . . . . . 11-23

Assigning Priority Policies to PoE Traffic . . . . . . . . . . . . . . . . . . . . . 11-24

11-1

HP ProCurve Management And Configuration Guide

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