Maximum Poe Power; Poe Power With And Without Eps - HP ProCurve Planning And Implementation Manual

Operating Rules
External Switch Power

Maximum PoE Power

The Switch 2626-PWR provisions (allocates power to) ports 1-24 with 406
watts of power for PoE applications compatible with the IEEE 802.3af stan-
dard. The Switch 2650-PWR provisions ports 1-48 with 406 watts. This reduces
the per port wattage by half as compared to the Switch 2626-PWR.
However, by connecting an HP 600 RPS/EPS or an HP 610 EPS, you can
optionally provision ports 25-48 with 408 watts of external PoE power, thereby
bringing the per port wattage up to 15.4 watts per port, unless you have the
other EPS port of the HP 600 RPS/EPS or the other port of a pair on the HP
610 EPS connected to an HP ProCurve PoE device. In this case you cannot
provision the full 408 watts to the Switch 2650-PWR, only half, 204 watts.
Table 2-1.
PoE Power PoE for Switch 2626-PWR
Sources
Internal 406 watts available to ports
Only 1-24.
Internal redundant 408/204* watts
and EPS available to ports 1-24. Only if
the internal power supply
fails.
EPS Only 408/204* watts available to
ports 1-24. (The EPS provides
PoE power to ports 1-24 only
if the internal power supply
fails.)
* If both EPS ports on the HP 600 RPS/EPS or both ports of a pair on the HP 610
EPS are connected to switches, each switch can receive 204 watts of power. If
a single switch is connected to the EPS ports, that switch can receive 408 watts.

PoE Power With and Without EPS

It is important to understand the PoE power requirements of these switch
devices because if the PoE power is not planned and implemented correctly,
end devices connected to the PoE switch ports may not receive power if an
internal switch PoE power source failure occurs.
2-4
Maximum Power Allocations
PoE for Switch 2650-PWR
406 watts available to ports 1-48.
406 watts available to ports 1-24
(provided by the internal source).
408/204* watts available to ports
25-48 (provided by the EPS source).
The internal power supply has
failed, and the EPS provides 408/
204* watts to ports 1-48. Note that
38 watts of this power are always
allocated exclusively to ports 1-24
or 25-48.) See page 3-5.
HP ProCurve Switch xl
PoE Module
No internal PoE power.
408/204* watts available to ports
1-24 from the EPS only.
408/204* watts available to ports
1-24.