HP PROCURVE 2520 Planning And Implementation Guide

9-6
Planning and Implementation for the 3500yl Switches
Planning Your PoE or PoE+ Configuration
Planning and
Implementation for the
3500yl Switches
The table in this example configuration contains entries that show the PoE
power available for the 3500yl-48G-PWR.
Figure 9-4. Example of two 3500yl-48G-PWR Switches connecting to a HP
ProCurve 620 External and Redundant Power Supply (J8696A)
Each of the two switches can receive full redundant power from the 620 RPS/
EPS should one of the switches internal power supplies fail. 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).
3500yl 48 port
switches
620 RPS/EPS
Source of
Power
Watts
Available
# of Ports Powered and
Average watts/Port
Redundant # of Ports
Powered and Average
watts/Port
Internal PoE
Power Supply
398 25 @ average 15.4 W each
48 @ average 7.5 W each
48 @ average 4.0 W each
None
Internal plus
External PoE
power Supply
398 + 388
1 - 24 25 - 48
48 @ average 15.4 W each 24 @ average 15.4 W each
48 @ average 7.5 W each
External PoE
Power Supply
(failed Internal
Power Supply)
388
(22 W is
reserved for
either ports
1-24 or 25-48)
25 @ average 15.4 W each
48 @ average 7.5 W each
48 @ average 4.0 W each
None

HP PROCURVE 2520 Specifications

General

Brand	HP
Model	PROCURVE 2520
Category	Software
Language	English