Cisco 4500M Software Manual page 119

Chapter 7 Environmental Monitoring and Power Management
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
The Catalyst 4500 series switches support two power management modes:
•
•
Note
Note
Selecting a Power Management Mode
By default, a switch is set to redundant mode. In the show power command, if the power supplies
needed by system is 1, the switch is in redundant mode; if the power supplies needed by system is 2,
the switch is in combined mode.
OL-6696-01
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.
Combined mode—Combined mode uses the power from all installed power supplies to support the
switch configuration power requirements. However, combined mode has no power redundancy. If a
power supply fails, one or more modules might shut down.
On the Catalyst 4510R switch, the 1000 W AC power supply is not enough to support redundant
mode for all possible configurations. It is able to support redundant mode for limited
configurations that require less than 1000 W.
The 1400 W DC power supply supports combined mode for data power. It does not support
combined mode for PoE power.
Status
-----------
good
err-disable
:1
Maximum
Available
---------
1360
0 1400
10 40
Software Configuration Guide—Release 12.2(25)EW
Fan Inline
Sensor Status
------ ------
good good
good n.a.
Power Management
7-5