10-21
Planning and Implementation for the 5400zl/8200zl Switches
Configuration Examples
Planning and
Implementation for the
5400zl/8200zl Switches
Figure 10-13.Example of a 5412zl with four power supplies, J8712A
In this example (Figure 10-13) there are four power supplies supplying 273
watts each for a maximum of 1092 watts.
All three modules can be used or six and a half modules (145 ports) at 7.5 watts
per port.
Two power supplies could be used to supply PoE power at 546 watts and the
other two power supplies could be held in reserve as redundant power
supplies if the primary power supplies fail. If two power supplies are
connected to different power sources, they could backup the other two in case
of failure. With this option the user must manage the PoE usage in order to
maintain redundancy.
71 ports can receive up to
15.4 watts of PoE power
Back
Front
273 watts
for PoE
273 watts
for PoE
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
Four Internal
Power Supplies
(J8712A)
1092 (without
redundancy)
71 @ average 15.4 W each
145 @ average 7.0 W each
273 @ average 4.0 W each
35 @ average 15.4 W
72 @ average 7.5 W each
136 @ average 4.0 W each
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