HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide

5-9
Planning and Implementation for the HP 2610-PoE Switches
Planning the PoE Configuration
HP 2610-48-PoE Switch Configurations
The tables in the example configurations contain entries that show the PoE
power available when the HP 2610-48-PoE Switch is used alone. When used
with the HP 600 RPS/EPS or HP 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 HP 600 RPS/EPS or the HP 610 EPS alone provides PoE power.
In the following examples using the HP 2610-48-PoE 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 HP 600 RPS/EPS or HP 610 EPS unit. In that
case, the internal switch PoE power supply provides 406 watts of power to
ports 1-24 and the HP 600 RPS/EPS or HP 610 EPS provides 408 watts of power
to ports 25-48.
If you are using the HP 2610-48-PoE Switch with external PoE power, the
number of ports with available PoE power when the switch is powered by just
the HP 600 RPS/EPS or HP 610 EPS unit may be less than the number of ports
powered when both the switch and the HP 600 RPS/EPS or HP 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:
1. The number of switches drawing external PoE power from the HP 600
RPS/EPS or HP 610 EPS unit:
• If only a single switch is using external PoE power, the HP 600 RPS/
EPS or HP 610 EPS provides 408 watts of PoE power.
• If two switches are using external PoE power from the HP 600 RPS/
EPS or two switches are connected to the same pair on the HP 610
EPS, a switch receives 204 watts of PoE power. Should the switch’s
internal PoE power supply fail, the HP 600 RPS/EPS or HP 610 EPS
provides power up to the wattage stated above.
2. When the internal PoE power supply fails, the HP 600 RPS/EPS reserves
a minimum of 22 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.
Note 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.
3. In the default configuration PoE power priority is determined by port
number, with the lowest numbered port having the highest priority.