Power Management Modes For The Catalyst 4500 Switch - Cisco Catalyst 4500 Series Configuration Manual

Power Management
All Catalyst 4500 series switch AC-input power supplies require single-phase source AC. The source AC
Note
can be out of phase between multiple power supplies or multiple AC-power plugs on the same power
supply because all AC power supply inputs are isolated. Each chassis power supply should ideally have
its own dedicated branch circuit sized to local and national codes.
When you insert power supplies in your switch, use power supplies that are of the same wattage.
Multi-input power supplies such as 1400 W DC triple-input, 4200 W AC, and 6000 W AC have
additional restrictions. Read the sections on special considerations for these power supplies. If you mix
power supplies, the switch uses the one with the higher wattage and ignores the other power supply. The
power supply status displays as err-disable and the summary displays as all zeros (0) for wattage values
in the output for the show power command.
The following example shows the output for the show power command for mixed power supplies:
Switch# show power
Power
Supply
------
PS1
PS2
*** Power Supplies of different type have been detected***
Power supplies needed by system
Power supplies currently available :1
Power Summary
(in Watts)
----------------------
System Power (12V)
Inline Power (-50V)
Backplane Power (3.3V)
----------------------
Total Used
Switch#

Power Management Modes for the Catalyst 4500 Switch

The Catalyst 4500 series switches support two power management modes:
•
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
12-8
1400 W DC—Supports up to 1400 W of system power and variable amounts of PoE, depending
–
on the input feed to the power supply. See
Supply" section on page 12-18
– 1400 W DC Service Provider—Uses up to three lines (12.5 A, 15 A, 15 A) of DC input and
delivers varying amounts of system power ranging from 400 W to 1400 W depending on the
lines powered. See "Special Considerations for the 1400 W DC SP Triple Input Power Supply"
section on page 12-19
4200 W AC and 6000 W AC—Supports varying amounts of system power and PoE depending
–
on the number of inputs powered and input voltage.
Model No Type
---------------- ---------
PWR-C45-2800AC AC 2800W
PWR-C45-1000AC AC 1000W
Used
----
328
----
338 (not to exceed Total Maximum Available = 750)
Redundant mode—Redundant mode uses one power supply as a primary power supply and the
second power supply as a back-up. If the primary power supply fails, the second power supply
immediately supports the switch without any disruption in the network. Both power supplies must
be the same wattage. A single power supply must have enough power to support the switch
configuration.
Chapter 12
"Special Considerations for the 1400 W DC Power
for more information.
for more information. (PoE not supported)
Status
-----------
good
err-disable
:1
Maximum
Available
---------
1360
0 1400
10 40
Environmental Monitoring and Power Management
Fan Inline
Sensor Status
------ ------
good good
good n.a.
OL-25340-01