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, you can optionally provision ports 25-48 with 368 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 connected to an HP ProCurve PoE device. In this case you cannot provision the full 368 watts to the Switch 2650-PWR, only half, 184 watts.

Table 2-1. Maximum Power Allocations

PoE Power PoE for Switch 2626-PWR

PoE for Switch 2650-PWR

HP ProCurve Switch xl

Sources

 

PoE Module

Rules Operating

Internal

406 watts available to ports

Only

1-24.

Internal

redundant 368/184* watts

and EPS

available to ports 1-24. Only if

 

the internal power supply

 

fails.

EPS Only

368/184* watts available to

 

ports 1-24. (The EPS provides

 

PoE power to ports 1-24 only

 

if the internal power supply

 

fails.)

406 watts available to ports 1-48.

406 watts available to ports 1-24 (provided by the internal source). 368/184* watts available to ports 25-48 (provided by the EPS source).

The internal power supply has failed, and the EPS provides 368/ 184* watts to ports 1-48. Note that 38 watts of this power are always allocated exclusively to ports 1 and 2, or 25 and 26.) See page 3-5.

No internal PoE power.

368/184* watts available to ports 1-24 from the EPS only.

368/184* watts available to ports 1-24.

*If both EPS ports on the HP 600 RPS/EPS are connected to switches, each switch can receive 184 watts of power. If a single switch is connected to the EPS ports, that switch can receive 368 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.

2-3