HP J8697A Planning And Implementation Guide

4-19
Planning and Implementation for the Series 5400zl Switch
Planning Your PoE Configuration
Planning and
Implementation for the
Series 5400zl Switch
Figure 4-14. Example of a 5412zl with three power supplies (one J8712A and two
J8713A)
This configuration is an example of three power supplies one J8712A
supplying 273 watts and two J8713As supplying 1800 watts for a maximum of
2073 watts. Therefore a total of 134 ports can be powered at 15.4 watts each.
In this example, one J8713A could be held in reserve to provide redundant
power for the other J8713A since they are equal in power. However if the
J8712A should fail there would be no redundancy for that power supply.
Unless you wanted to borrow power from the reserve J8713A. If this is done
though and the primary J8713A fails, there will not be enough power left over
to fully backup the failed J8713A.
BackFront
900 Watts
for PoE
900 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
Three Internal
PoE Power
Supplies: one
J8712A two
J8713As
2073 (without
redundancy)
• 134 @ average 15.4 W each
• 288 @ average 7.0 W each
• 288 @ average 4.0 W each
• 58 @ average 15.4 W each with a J8713A in reserve
• 128 @ average 7.0 W each with a J8713A in reserve
• 225 @ average 4.0 W each with a J8713A in reserve

HP J8697A Specifications

General

Ports	24
Form Factor	Rack-mountable
Power Supply	Internal
Management	Managed
VLAN Support	Yes
Jumbo Frame Support	Yes
Switching Capacity	48 Gbps
Forwarding Rate	35.7 Mpps
Model	HP J8697A
Port Type	10/100/1000BASE-T
Layer	Layer 2