HP PROCURVE 2520 Planning And Implementation Guide

10-10
Planning and Implementation for the 5400zl/8200zl Switches
Configuration Examples
Planning and
Implementation for the
5400zl/8200zl Switches
To achieve the 16 ports at 15.4 watts the PoE devices must be divided up and
connected to two different modules. Remember, as soon as a module is
installed into the switch, 22 watts are reserved for its use.
In order to use those watts, devices must be connected to that module or PoE
power must be disabled to all ports on that module.
If PoE power is disabled to all ports on a module the 22 watts that was reserved
for that module is returned to the pool of available watts and can be used by
another module’s ports.
In this example (Figure 10-3) there are three modules in the chassis; 22 watts
is reserved for each module. In order to use the 22 watts, PDs must be
connected to each module, or all ports on one module could have the PoE
power disabled.
Figure 10-3. Example of a 5406zl with two power supplies, J8712A
There are two power supplies supplying 273 watts each for a maximum of 546
watts.
35 ports can receive up to
15.4 watts of PoE power
The PoE power for all ports on
this module has been disabled
Power Supply
J8712A
273 watts
for PoE
273 watts
for PoE
Source of Power Watts Available # of Ports Powered and Average watts/
Port
Redundant # of Ports Powered and
Average watts/Port
Two Internal
Power Supplies
(J8712A)
546 (without
redundancy)
35 @ average 15.4 W each
72 @ average 7.5 W each
136 @ average 4.0 W each
17 @ average 15.4 W
34 @ average 7.5 W each
68 @ average 4.0 W each
Two External
Power Supplies
(J8712A)
Additional 546 70 @ average 15.4 W each
144 @ average 7.5 W each
144 @ average 4.0 W each
35 @ average 15.4 W
72 @ average 7.5 W each
136 @ average 4.0 W each

HP PROCURVE 2520 Specifications

General

Brand	HP
Model	PROCURVE 2520
Category	Software
Language	English