20-13
Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
78-13315-02
Chapter 20 Administering the Switch
Power Management
Using the CLI to Power Modules Up or Down
You can power down a properly working module from the command-line interface (CLI) by entering the
set module power down
mod
command. The module is marked as
power-down
in the
show module
Status field. Enter the
set module power up
mod
command to check if adequate power is available in
the system to turn the power on for a module that was previously powered down. If not enough power is
available, the module status changes from
power-down
to
power-deny
.
Lower wattage power
supply is inserted with
redundancy enabled
•
System log and syslog messages are generated.
•
The system disables the lower wattage power supply; the higher
wattage supply powers the system.
Higher or lower wattage
power supply is inserted
with redundancy disabled
•
System log and syslog messages are generated.
•
System power is increased to the combined power capability of both
supplies.
•
The modules marked as
power-deny
in the
show module
Status field
are brought up if there is sufficient power.
Power supply is removed
with redundancy enabled
•
System log and syslog messages are generated.
•
If the power supplies are of equal wattage, there is no change in the
module status because the power capability is unchanged.
If the power supplies are of unequal wattage and the lower wattage
supply is removed, there is no change in the module status.
If the power supplies are of unequal wattage and the higher wattage
supply is removed, and if there is not enough power for all previously
powered-up modules, some modules are powered down and marked
as
power-deny
in the
show module
Status field.
Power supply is removed
with redundancy disabled
•
System log and syslog messages are generated.
•
System power is decreased to the power capability of one supply.
•
If there is not enough power for all previously powered-up modules,
some modules are powered down and marked as
power-deny
in the
show module
Status field.
System is booted with
power supplies of different
wattage installed and
redundancy enabled
•
System log and syslog messages are generated.
•
The lower wattage supply is disabled.
System is booted with
power supplies of equal or
different wattage installed
and redundancy disabled
•
System log and syslog messages are generated.
•
System power equals the combined power capability of both
supplies.
•
The system powers up as many modules as the combined capacity
allows.
Table 20-1 Effects of Power Supply Configuration Changes (continued)
Configuration Change
Effect
