PoE/PoE+ Planning and Implementation Guide 2011-09

12-1

Planning and Implementation for the E3800

Switches

This chapter discusses the planning process a user should follow to

successfully implement PoE and PoE+ using a E3800 Switch. After

understanding what PoE is and its operating rules, the next step to

implementation is planning. See “General Considerations” page A-1, for an

example list of considerations during the planning phase.

Note In the stacked environment, the PoE/PoE+ will still be managed at the member

level. This means that power available to one member cannot be shared with

other members. The PoE features will have to be configured member-by-

member.

Note By default, LLDP on each switch is enabled. PoE+ (802.3at) Powered Devices

(PD) that only support 2-event class signature may not be able to negotiate

for additional power when connected to the switch. In such cases, the LLDP

option on the switch port must be disabled to enable the 2-event classification

so that such PoE+ PDs may be detected. For information on CLI commands

to disable LLDP, see the Management and Configuration Guide for your

switch.

Planning Your PoE or PoE+

Configuration

This section assists you in building a PoE or PoE+ configuration. Using the

following examples you can plan, build, and connect PoE or PoE+ devices

quickly and easily.

There are four configurations for HP E3800 Switches:

■ HP E3800-24G-PoE+-2SFP+ Switch, or HP E3800-24G-PoE+-2XG Switch,

with one power supply

■ HP E3800-24G-PoE+-2SFP+ Switch, or HP E3800-24G-PoE+-2XG Switch,

with two power supplies