Configuring Internal Power Supplies

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Information About Internal Power Supplies

See the switch installation guide for information about the power supplies.

Cisco RPS 2300 in a Mixed Stack Overview

In a mixed stack, one or more switches can be connected to a Cisco Redundant Power System 2300, also known as the RPS 2300. You can configure and manage an RPS 2300 connected to a stack member.

Note
Note

The Catalyst 3750-X and 3560-X switches do not have RPS connectors. These switches can be connected to an XPS-2200 expandable power supply. The Catalyst 3750-X switch also has stack power connectors.

Follow these guidelines when configuring the RSP-2300:

  • The RPS name is a 16-character-maximum string.

  • On a standalone switch, the RPS name applies to the connected RPS 2300.

  • In a switch stack, the RPS name applies to the RPS ports connected to the specified switch.

  • If you do not want the RPS 2300 to provide power to a switch, but do not want to disconnect the RPS cable between the switch and the RPS 2300, use thepower rps switch-number port port rps-port-idmode standby user EXEC command.

  • You can configure the priority of an RPS 2300 port from 1 to 6. Specifying a value of 1 assigns the port and its connected devices the highest priority and specifying a value of 6 assigns the port and its connected devices the lowest priority.

If multiple switches are connected to the RPS 2300 need power, the RPS 2300 provides power to the switches with the highest priority. If the RPS 2300 still has power available, it can then provide power to the switches with lower priorities.

How to Configure Internal Power Supplies

Configuring Internal Power Supply

You can use the power supply EXEC command to configure and manage the internal power supply on the switch. The switch does not support the no power supply EXEC command.

Follow these steps beginning in user EXEC mode:

Procedure

  Command or Action Purpose
Step 1

power supply switch_number slot {A | B } { off | on }

Example:


Switch# power supply 1 slot A on

Sets the specified power supply to off or on by using one of these keywords:

  • A —Selects the power supply in slot A.

  • B —Selects power supply in slot B.

    Note 

    Power supply slot B is the closest to the outer edge of the switch.

  • off —Set the power supply off.

  • on —Set the power supply on.

By default, the switch power supply is on.

Step 2

show environment power

Example:


Switch# show environment power

Verifies your settings.

Configuring the Cisco RPS 2300 in a Mixed Stack

To configure and manage the RPS 2300, follow these steps beginning in user EXEC mode:

Procedure

  Command or Action Purpose
Step 1

power rps switch_number name { string |serialnumber }

Specifies the name of the RPS 2300 by using one of these keywords:

  • switch_number —Specifies the stack member to which the RPS 2300 is connected. The range is 1 to 9, depending on the switch member numbers in the stack.

  • name — Sets the name of the RPS 2300 and enter one of these options:

    • string — Specifies the name such as port1 or “port 1”. Using quotation marks before and after the name is optional, but you must use quotation marks if you want to include spaces in the port name. The name can have up to 16 characters.

    • serialnumber —Configures the switch to use the RPS 2300 serial number as the name.

Step 2

power rps switch_number port rps-port-id mode {active |standby }

Specifies the mode of the RPS 2300 port.

  • switch_number —Specifies the stack member to which the RPS 2300 is connected. The range is 1 to 9, depending on the switch member numbers in the stack.

  • port rps-port-id —Specifies the RPS 2300 port. The range is from 1 to 6.

  • mode —Sets the mode of the RPS 2300 port:

    • active —The RPS 2300 can provide power to a switch when the switch internal power supply cannot.

    • standby —The RPS 2300 cannot provide power to a switch.

Step 3

power rps switch_number port rps-port-id priority priority

Sets the priority of the RPS 2300 port. The range is from 1 to 6, where 1 is the highest priority and 6 is the lowest priority. The default port priority is 6.

Step 4

show env rps

Verifies your settings.

Step 5

copy running-config startup-config

Example:


Switch# copy running-config startup-config

(Optional) Saves your entries in the configuration file.

Monitoring Internal Power Supplies

Table 1. Show Commands for Power Supplies

Command

Purpose

show environment power [ all | switch switch_number ]

(Optional) Displays the status of the internal power supplies for each switch in the stack or for the specified switch. The range is 1 to 9, depending on the switch member numbers in the stack.

The switch keywords are available only on stacking-capable switches.

Configuration Examples for Internal Power Supplies

This example shows how to set the power supply in slot A to off:


Switch# power supply 1 slot A off
Disabling Power supply A may result in a power loss to PoE devices and/or switches ... Continue? (yes/[no]): yes 
Switch#
Jun 10 04:52:54.389: %PLATFORM_ENV-6-FRU_PS_OIR: FRU Power Supply 1 powered off 
Jun 10 04:52:56.717: %PLATFORM_ENV-1-FAN_NOT_PRESENT: Fan is not present
Switch#

This example shows how to set the power supply in slot A to on:


Switch# power supply 1 slot A on
Jun 10 04:54:39.600: %PLATFORM_ENV-6-FRU_PS_OIR: FRU Power Supply 1 powered on

This example shows the output of the show env power command:

Table 2. show env power Status Descriptions
Field Description

OK

The power supply is present and power is good.

Not Present

No power supply is installed.

No Input Power

The power supply is present but there is no input power.

Disabled

The power supply and input power are present, but power supply is switched off by CLI.

Not Responding

The power supply is not recognizable or is faulty.

Failure-Fan

The power supply fan is faulty.

Additional References

Error Message Decoder

Description Link

To help you research and resolve system error messages in this release, use the Error Message Decoder tool.

https://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi

MIBs

MIB MIBs Link

All supported MIBs for this release.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

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