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HP ProCurve 2520 Planning And Implementation Manual: Procurve 2650-pwr Configurations

Procurve power over ethernet (poe/poe+).
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Planning and Implementation for the 2600-PWR Switches
Planning the PoE Configuration

ProCurve 2650-PWR Configurations

The tables in the example configurations contain entries that show the PoE
power available when the 2650-PWR is used alone. When used with the 600
RPS/EPS or 610 EPS unit, additional PoE power is available to the PoE ports
and PoE power is available should the switch's internal PoE power supply fail.
Table entries show the PoE power available when the 600 RPS/EPS or the 610
EPS alone provides PoE power.
In the following examples using the ProCurve 2650-PWR switch, reference is
made to two blocks of ports: ports 1-24 and ports 25-48. This applies when
external PoE power is available from an 600 RPS/EPS or 610 EPS unit. In that
case, the internal switch PoE power supply provides 406 watts of power to
ports 1-24 and the 600 RPS/EPS or 610 EPS provides 408 watts of power to
ports 25-48.
If you are using the ProCurve 2650-PWR Switch with external PoE power, the
number of ports with available PoE power when the switch is powered by just
the 600 RPS/EPS or 610 EPS unit may be less than the number of ports
powered when both the switch and the 600 RPS/EPS or 610 EPS unit are
supplying power. In the default configuration the number and location of ports
with redundant PoE power is determined by three factors:
N o t e
It is the ports configured with the highest priority of either bank (1-24 or 25-
48) that will receive PoE power. For example, if the highest priority ports have
been re-configured to be 23, 24 and 47, 48, then they will have PoE power.
If redundant PoE power is required, use the example tables to determine how
much power is available to which ports.
4-6
The number of switches drawing external PoE power from the 600 RPS/
EPS or 610 EPS unit. If only a single switch is using external PoE power
the 600 RPS/EPS or 610 EPS provides 408 watts of PoE power. If two
switches are using external PoE power from the 600 RPS/EPS or two
switches are connected to the same pair on the 610 EPS, a switch receives
204 watts of PoE power. Should the switch's internal PoE power supply
fail, the 600 RPS/EPS or 610 EPS provides power up to the wattage stated
above.
When the internal PoE power supply fails, the 600 RPS/EPS reserves a
minimum of 38 watts for the less-loaded bank of ports. In the default
configuration, at a minimum, the first two ports in the bank (1 and 2 or 25
and 26) will have PoE power.
In the default configuration PoE power priority is determined by port
number, with the lowest numbered port having the highest priority.

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