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

8-3
Planning and Implementation for the HP 2910-PoE+ al Switches
PoE Provisioning
PoE Provisioning
■ The 2910-24G-PoE+ al Switch can supply up to 382 watts of PoE+ power
across ports 1-24 for PoE+ applications that are compatible with the IEEE
802.3at standard.
■ The 2910-48G-PoE+ al Switch can supply up to 382 watts of PoE+ power
across ports 1-48 for PoE+ applications that are compatible with the IEEE
802.3at standard. This reduces the average per port wattage by half as
compared to the 2910al-24G-PoE+ Switch.
An external power supply, the HP 630 Redundant and/or External (HP 630
RPS/EPS) Power Supply (J9443A
) can be connected to either of the 2910-
PoE+ al Switches to provide redundant or extra PoE+ power.
Table 8-1. PoE Power Provisioning for the 2910-PoE+ al Switches
PoE/PoE+ Allocation Using LLDP Information
A PoE port can automatically configure certain PoE+ link partner devices if
the device supports advertising of its PoE needs.
By enabling PoE LLDP detection, available information about the power
requirements of the PD may be used by the switch to configure the power
allocation. The initial configuration for PoE ports may change if more accurate
configuration information is provided by way of LLDP.
For more configuration information, refer to the Management and
Configuration Guide for your switch at www.hp.com/networking/support. Auto
search on “2910”, select your switch model from the list, and click Display
selected. Then click on the links that have “Manuals” in them to get to the web
page that lists the available manuals.
PoE Devices Internal Only Internal and External External Only
PoE for 2910-24G-PoE+
al Switch
382 watts available to
ports 1-24.
770 watts available to ports 1-24
(provided by the internal and
external source). 388 watts
available as backup in case of
failure, provided by the external
source.
If the switch’s internal power
supply has failed, 388 watts
available to ports 1-24 from
the external source.
PoE for 2910-48G-PoE+
al Switch
382 watts available to
ports 1-48.
770 watts available to ports 1-48
(provided by the internal and
external source).
If the switch’s internal power
supply has failed, 388 watts
available to ports 1-48 from
the external source.