HP ProCurve 2520 Planning And Implementation Manual: Hp Procurve 3500yl-48g-poe+ Configuration
Procurve power over ethernet (poe/poe+).
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HP ProCurve 3500yl-48G-PoE+ Configuration
PoE+ power requirements are figured differently for the 3500yl-48G-PoE+
switch. In the default configuration PoE+ power priority is determined by port
number, with the lowest numbered port (port 1) having the highest priority,
and the highest numbered port (port 48) having the lowest priority.
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 first. For example, if the highest priority
ports have been re-configured to be 23, 24 and 47, 48, then they will receive
PoE+ power before the lower priority ports.
All 25 ports can receive up to 15.4
watts of PoE power
Figure 9-7. Example of a 3500yl-48G-PoE+ Switch
Internal PoE
Power
Supply
■
For example, the switch starts with 398 watts. Then it reserves 22 watts per
bank leaving 354 watts total for allocation. If ports 1-24 are chosen to be used
then the 22 watts that was held in reserve for that bank of ports will be added
back in for a total of 376 watts.
or
Source of
Watts
Power
Available
398
12 @ average 30 W each
25 @ average 15.4 W each
48 @ average 7.5 W each
48 @ average 4.0 W each
The lowest loaded bank of ports (1-24 or 25-48) has 22 watts reserved.
That power is available for use by the two highest priority ports in the
bank, (in a default configuration ports 1 and 2, or 25 and 26).
Planning and Implementation for the 3500yl Switches
Planning Your PoE or PoE+ Configuration
48 ports can receive up to 7.5
watts of PoE power
# of Ports Powered and
Average watts/Port
Powered and Average watts/
None
Redundant # of Ports
Port
9-9
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