PoE/PoE+ Planning and Implementation Guide 2011-09

2-14
Operating Rules
Provisioning Power for PoE
Since there is no external power supply available for this switch, PoE power
is limited to 67 watts provisioned across all 8 ports. Therefore, proper
provisioning is very important.
HP E2620-PoE+ Switches
Maximum PoE+ Power
The Switch E2620-24-PPoE+ provisions (allocates power to) ports 1-12 with
126 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
E2620-24-PoE+ provisions ports 1-24 with 382 watts. The Switch E2620-48-
PoE+ provisions ports 1-48 also with 382 watts. This reduces the average per
port wattage by half as compared to the Switch E2620-24-PoE+.
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 E2620-24-
PoE+ or the E2620-48-PoE+ switches to provide redundant or extra PoE+
power. The E2620-24-PPoE+ does not support external PoE+ power.
Table 2-6. Maximum Power Allocations for the E2620 Switches
PoE+ Power Requirements
The Switch E2620-24-PPoE+ has 24 ports of which 1-12 only can be used for
PoE+ power, with an internal PoE power supply that provides 126 watts. The
Switch E2620-24-PoE+ has 24 ports with an internal PoE power supply that
provides 382 watts of power across all 24 ports. The Switch 2620-48-PoE+ has
48 ports with 382 watts of power across all 48 ports. The HP 630 RPS/EPS can
provide an extra 388 watts for a total of 770 watts.
PoE Devices Internal Only Internal and External External Only
PoE for Switch
E2620-24-PPoE+
126 watts available to
ports 1-12.
Internal power only. Internal power only.
PoE for Switch
E2620-24-PoE+
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.
The internal power supply
has failed, 388 watts
available to ports 1-24 from
the external source.
PoE for Switch
E2620-48-PoE+
382 watts available to
ports 1-48.
770watts 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.