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Catalyst 3750-X and 3560-X Switch Command Reference
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Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
power xps (privileged EXEC)
Usage Guidelines A power supply in RPS mode can supply power to only one failed power supply, regardless of the power
level of the supply or the failed power supply. The smallest power supply in RPS mode must be equal to
or greater than the largest switch power supply connected to an XPS port in RPS mode.
When a failed power supply is repaired or replaced, the XPS automatically backs off from supplying
power.
When a power supply is in SP mode, the available power from the power supply is added to the power
stack budget, along with the available power from all switches in the power stack.
When both power supplies are in SP mode, any connections from the XPS to nonstackable switches are
disabled, and connections to stackable switches are put in SP mode.
In mixed mode, with one power supply in RPS mode and one in SP mode, if two power supplies in a
single switch fail, because the XPS can back up only one of them, it denies power to both power supplies,
and the switch shuts down. This occurs only in mixed power mode.
You can verify your settings by entering the show env xps power or show env xps configuration
privileged EXEC command.
Examples This example shows how to set power supply A to RPS mode:
Switch# power xps supply A mode RPS
This example shows how to set power supply B to stack power mode when the XPS is connected to stack
member 2:
Switch# power xps 2 supply B mode SP
This example shows the switch messages when you begin a software upgrade:
Switch# power xps upgrade start
This will begin the upgrade of the XPS firmware. Do not power off or reset the XPS until
this process has completed. Continue? (yes/[no]): yes
XPS 0022.bdd7.9b14 will now reload and prepare for an upgrade using
Xmodem or Xmodem-1K protocol through the Service Port.
Switch#
*Mar 22 03:12:29.753: %PLATFORM_XPS-6-UPGRADE_READY: XPS 0022.bdd7.9b14 is in a
non-operational state and is waiting for an upgrade using Xmodem or Xmodem-1K protocol
through the Service Port.
Related Commands Command Description
power xps (global
configuration
command)
Configures XPS and XPS port names.
show env xps [system] Displays the status of the XPS connected to a switch or switch stack, or
displays the status of the power system.