Cisco 4500M Software Manual page 128

Power Management
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This configuration requires less than the maximum that a single power supply can provide in 1+1
redundancy mode.
The following configuration requires more power than a single 400 W power supply can provide:
•
•
•
•
This configuration requires 445 W and cannot be used in 1+1 redundancy mode for a 400 W power
supply. A single 650 W power supply provides enough power for 1+1 redundancy mode for this
configuration.
The following configuration requires more power than either a single 400 W or 650 W power supply can
provide:
•
•
•
This configuration requires 735 W and cannot be used in 1+1 redundancy mode for either a 400 W or
650 W power supply.
Remember, when considering the 1+1 redundancy mode, you must carefully plan the configuration of
the module power usage of your chassis. An incorrect configuration will momentarily disrupt your
system during the evaluation cycle. To avoid this disruption, carefully plan your configuration to ensure
that it is within the power limits, or return to the default 2+1 redundancy configuration by installing a
third power supply in your switch and setting the power redundancy to 2+1 redundancy mode.
Use the power supplies required 2 command to set the power redundancy to the 2+1 redundancy mode.
Setting the Power Redundancy Mode
To configure the power redundancy mode on a Catalyst 4006 switch, perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# power supplies required
Step 3
Switch(config)# end
Step 4
Switch# show power
The power supplies required command is not supported on a Catalyst 4500 series switch.
Note
The default power redundancy mode is 2 (2+1) redundancy mode.
The following example shows how to set the power redundancy mode to 1 (1+1 redundancy mode).
Switch (config)# power supplies required 1
Switch (config)# end
Software Configuration Guide—Release 12.2(25)EW
7-14
Fan tray—25 W
WS-X4014 supervisor engine—110 W
Two WS-X4148-RJ modules in slots 2 and 3—65 W each (130 W total)
Two WS-X4448-GB-LX modules in slots 4 and 5—90 W each (180 W total)
Fan tray—25 W
WS-X4014 supervisor engine—110 W
Five 48-port 100BASE-FX modules in slots 2 through 6—120 W each (600 W total)
Fan box—25 W
Chapter 7 Environmental Monitoring and Power Management
Purpose
Enters configuration mode.
{ Sets the power redundancy mode.
1 | 2}
Exits configuration mode.
Verifies the power redundancy mode and the
current power usage for the switch.
OL-6696-01