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

14-19
Planning and Implementation for the HP 5400R zl2 Switches
Configuration Examples
Figure 14-5. Example of a HP 5406R zl2 with two power supplies, J9829A
The following table shows the label and description for HP 5406R zl2 with two
power supplies, J8929A:
Alternatively, one power supply could be used to supply PoE power at 900
watts and the other power supply could be used as a secondary power supply.
If both power supplies are connected to different power sources, one could
backup the other in case of failure. With this option the user must manage the
PoE usage in order to maintain redundancy.
In this example the threshold command could be set at 50%, and if the switch
begins to use more than 900 watts an event message would be logged, allowing
you to adjust the PoE load or add a Power Supply Shelf for additional power
as required to obtain the best power balance for your operation.
Connecting a fully loaded external power supply can double the available PoE
power. See page 14-28.
Label Description
1 Front
2 Power Supply, J9829A
Source of Power
(PoE/PoE+)
Watts Available Number of Ports Powered and
Average watts/Port
Redundant Number of Ports Powered
and Average watts/Port
Two Internal PoE
Power Supplies
(J9829A)
1664 (without
redundancy)
55 @ average 30 W each
107 @ average 15.4 W each
144 @ average 7.5 W each
144 @ average 4.0 W each
27 @ average 30 W each
53 @ average 15.4 W each
109 @ average 7.5 W each
144 @ average 4.0 W each