The following command is used to implement power supply
redundancy:
Switch(config)#power redundancy-mode
mode
- Combined mode disables redundancy. The power available to the system is the
combined power capability of both power supplies. The system powers up as many
modules as the combined capacity allows. If one supply should fail and there is
not enough power for all previously powered-up modules, the system powers down
those modules for which there is not enough power.
- Redundant mode enables redundancy. In a redundant configuration, the total
power drawn is at no time greater than the capability of one supply. If one
supply malfunctions, the other supply can take over the entire system load.
During normal operation with two power supplies, each provides approximately
half of the required power to the system. Load sharing and redundancy are
enabled automatically; no software configuration is required.
The show power command displays the current state
of modules and the total power available:
Switch#show
power
Turn Off or Cycle a Power to
Modules
Power to a given module can be removed using this command;
Switch(config)#no power enable module slot
 |
NOTE:
When the no power enable module slot command is
used to power down a module, the module configuration is not saved.
|
To turn power back on for a module that was previously powered down,
issue this command:
witch(config)#power enable module
slot
he power to a module can be cycled (reset). The
power cycle will turn the module power off for 5 seconds and then back on. To
power cycle a module, issue this command:
witch(config)#power cycle module
slot