HP PROCURVE 2520 Planning And Implementation Guide

2-15
Operating Rules
Provisioning Power for PoE
Operating Rules
HP ProCurve 2910al PoE+ Switches
Maximum PoE Power
The Switch 2910al-24G-PoE+ provisions (allocates power to) ports 1-24 with
382 watts of power for PoE and PoE+ applications compatible with the IEEE
802.3af and the 802.3at standard and some pre-standard devices. The Switch
2910al-48G-PoE+ provisions ports 1-48 with 382 watts. This reduces the
average per port wattage by half as compared to the Switch 2910al-24G-PoE+.
An external power supply, the HP ProCurve 630 Redundant and/or External
(HP ProCurve 630 RPS/EPS) power supply (J9443A
) can be connected to
either of the 2910al PoE+ switches to provide redundant or extra PoE+ power.
Table 2-5. Maximum Power Allocations for the 2910al Switches
PoE Power Requirements
The Switch 2910al-24G-PoE+ has 24 ports with an internal PoE power supply
that provides 382 watts of power across all 24 ports. The Switch 2910al-48G-
PoE+ has 48 ports with 382 watts of power across all 48 ports. The HP
ProCurve 630 RPS/EPS can provide an extra 382 watts for a total of 764 watts.
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 information, see the Management and Configuration Guide on the
ProCurve Web site at www.hp.com/go/procurve/manuals.
PoE Devices Internal Only Internal and External External Only
PoE for Switch
2910al-24G-PoE
382 watts available to
ports 1-24.
764 watts available to ports 1-24
(provided by the internal and
external source). 382 watts
available as backup in case of
failure, provided by the external
source.
The internal power supply
has failed, 382 watts
available to ports 1-24 from
the external source.
PoE for Switch
2910al-48G-PoE
382 watts available to
ports 1-48.
764 watts available to ports 1-48
(provided by the internal and
external source).
The internal power supply
has failed, 382 watts
available to ports 1-48 from
the external source.

HP PROCURVE 2520 Specifications

General

Brand	HP
Model	PROCURVE 2520
Category	Software
Language	English