PoE/PoE+ Planning and Implementation Guide 2011-09

2-20
Operating Rules
Provisioning Power for PoE
Table 2-11. Maximum Power Allocations for the 3500yl-PoE+ Switches
PoE Power Requirements
The Switch 3500yl-24G-PoE+ has 24 ports with an internal PoE power supply
that provides 398 watts of power across all 24 ports. The Switch 3500yl-48G-
PoE+ has 48 ports with 398 watts of power across all 48 ports. The HP
ProCurve 630 RPS/EPS can provide an extra 388 watts for a total of 786 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 for
your switch at www.hp.com/networking/support.
HP E3800 PoE+ Switches
Maximum PoE Power
HP E3800 PoE+ switches provision (allocates power to) ports 1-24 or 1-48 with
up to 1080 watts of power depending on how many power supplies are
installed and to what voltage the power supply is connected to, either 110 or
220 volts, for PoE and PoE+ applications compatible with IEEE 802.3af and
802.3at standards, including some pre-standard devices.
PoE Devices Internal Only Internal and External External Only
PoE for Switch
3500yl-24G-PoE+
398 watts available
to ports 1-24.
786 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.
The internal power supply has
failed, 388 watts available to ports
1-24 from the external source.
PoE for Switch
3500yl-48G-PoE+
398 watts available
to ports 1-48.
786 watts available to ports 1-48
(provided by the internal and
external source).
The internal power supply has
failed, 388 watts available to ports
1-48 from the external source.