HP PROCURVE 2520 Planning And Implementation Guide

8-6
Planning and Implementation for the 3500 Switches
Planning Your PoE Configuration
Planning and
Implementation for the 3500
Switches
The table in this example configuration shows the PoE power available for
the HP ProCurve 3500-48-PoE switch.
Figure 8-4. Example of two HP ProCurve 3500-48-PoE Switches connecting to a
HP ProCurve 620 External and Redundant Power Supply (J8696A)
Each of the switches can receive full redundant power from the HP ProCurve
620 RPS/EPS should one of the 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).
3500- 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 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

Web Interface	Yes
CLI Support	Yes
IPv6 Support	Yes
Auto-MDIX	Yes
SNMP Support	Yes
Quality of Service (QoS)	Yes
VLAN Support	Yes
Jumbo Frame Support	Yes