PoE/PoE+ Planning and Implementation Guide 2011-09

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Introduction
PoE Capabilities of the HP Products
For more information, refer to the Management and Configuration Guide
for your switch at www.hp.com/networking/support.
The dual-personality ports have either auto-sensing 10/100/1000Base-T RJ-45
or mini-GBIC connectivity. The mini-GBIC ports do not support PoE. If any of
the mini-GBIC ports are used the corresponding RJ-45 port will not be supplied
with PoE power.
Power Redundancy for the 3500yl PoE+ Switches
The internal power supply in these switches provides both the 12V (RPS) and
54V (EPS) circuits. If the 54V portion of the power supply fails, it will only shut
down the PoE connections. However, if the 12V portion of the power supply
fails, it will shut down the entire switch. Therefore it is important to provide
a redundant power supply for both the 12V and 54V circuits. It is recommended
that both EPS and RPS be connected to provide full redundancy.
The 3500yl-PoE+ Switches can be connected to an HP 630 RPS/EPS (J9443A)
and receive full redundant power from the RPS part of the unit for switch
operation if the internal power supply in the switch fails. The HP 630 RPS/EPS
unit can provide all the power necessary to keep only one switch running.
If maximum PoE+ power is to be used on all 48 ports, it becomes necessary
to connect a HP 630 RPS/EPS, since the internal power supply only has enough
power to supply 24 ports with maximum wattage. In this case, there is no
redundancy.
HP E3800 PoE+ Switches
The HP E3800-48G-PoE+-4SFP+ Switch (J9574A), has 48 Integrated PoE auto-
sensing 10/100/1000Base-T RJ-45 ports with four SFP+ ports for installing HP
transceivers.
The E3800-24G-PoE+-2SFP+ Switch (J9573A), has 24 auto-sensing 10/100/
1000-T RJ-45 ports and two SFP+ ports for installing HP transceivers.