Power Management and Environmental Monitoring

Understanding How Power Management Works

Enabling or Disabling Power Redundancy

Using the CLI to Power Modules Off and On

Using the CLI to View System Power Status

Using the CLI to Power Cycle Modules

Determining System Power Requirements

Nine-Slot Chassis

Six-Slot Chassis

Understanding How Environmental Monitoring Works

Environmental Monitoring Using CLI Commands

LED Indications

Power Management and Environmental Monitoring

This chapter describes the power management and environmental monitoring features in the Catalyst 6000 family switches.

Note For complete syntax and usage information for the commands used in this chapter, refer to the Catalyst 6000 Family Command Reference publication.

This chapter consists of these sections:

Understanding How Power Manage ment Works

These sections describe power management in the Catalyst 6000 family switches:

Note The 1300W power supply can be used in both six- and nine-slot chassis. The 1000W supply can be used in the six-slot chassis only. In systems with redundant power supplies, both power supplies must be of the same wattage.

The Catalyst 6000 family modules have different power requirements, and certain switch configurations require more power than a single power supply can provide. Although the power management feature allows you to power all installed modules with two power supplies, redundancy is not supported in this configuration. Redundant and nonredundant power configurations are discussed in the following sections.

To determine the power requirements for your system, see the "Determining System Power Requirements" section.

Enabling or Disabli ng Power Redundancy

From global configuration mode, use the power redundancy-mode combined | redundant commands to disable or enable redundancy (redundancy is enabled by default). You can change the configuration of the power supplies to redundant or nonredundant at any time.

Specifying the combined keyword disables redundancy. In a nonredundant configuration, 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. However, if one supply should fail and there is not enough power for all previously powered up modules, the system will power down those modules for which there is not enough power.

Specifying the redundant keyword enables redundancy. In a redundant configuration, the total power drawn from both supplies 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. When you install and turn on two power supplies, each concurrently provides approximately half of the required power to the system. Load sharing and redundancy are enabled automatically; no software configuration is required.

Use the show power command to view the current state of modules and the total power available for modules (see the "Using the CLI to View System Power Status" section).

Table 23-1 describes how the system responds to changes in the power supply configuration.

Table 23-1: Effects of Power Supply Configuration Changes

Configuration Change Effect

Redundant to nonredundant

System log and syslog messages are generated.

System power is increased to the combined power capability of both supplies.

Modules marked power-deny in the show power oper state field are brought up if there is sufficient power.

Nonredundant to redundant (both supplies must be of equal wattage)

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 will be powered down and marked as power-deny in the show power oper state field.

Equal wattage power supply is inserted with redundancy enabled

System log and syslog messages are generated.

System power equals the power capability of one supply.

No change in module status since power capability is unchanged.

Equal 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.

Modules marked power-deny in the show power oper state field are brought up if there is sufficient power.

Higher or lower wattage power supply is inserted with redundancy enabled

System log and syslog messages are generated.

The system does not allow you to operate a power supply of different wattage even if the wattage is higher than the installed supply. The inserted supply is shut down.

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.

Modules marked power-deny in the show power oper state field are brought up if there is sufficient power.

Power supply is removed with redundancy enabled

System log and syslog messages are generated.

No change in module status since power capability is unchanged.

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 will be powered down and marked as power-deny in the show power oper state field.

System is booted with power supplies of different wattage installed and redundancy enabled

System log and syslog messages are generated.

The system does not allow you to have power supplies of different wattage installed in a redundant configuration. The lower wattage supply is shut down.

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.

Configuration Change	Effect
Redundant to nonredundant	System log and syslog messages are generated. System power is increased to the combined power capability of both supplies. Modules marked power-deny in the show power oper state field are brought up if there is sufficient power.
Nonredundant to redundant (both supplies must be of equal wattage)	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 will be powered down and marked as power-deny in the show power oper state field.
Equal wattage power supply is inserted with redundancy enabled	System log and syslog messages are generated. System power equals the power capability of one supply. No change in module status since power capability is unchanged.
Equal 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. Modules marked power-deny in the show power oper state field are brought up if there is sufficient power.
Higher or lower wattage power supply is inserted with redundancy enabled	System log and syslog messages are generated. The system does not allow you to operate a power supply of different wattage even if the wattage is higher than the installed supply. The inserted supply is shut down.
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. Modules marked power-deny in the show power oper state field are brought up if there is sufficient power.
Power supply is removed with redundancy enabled	System log and syslog messages are generated. No change in module status since power capability is unchanged.
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 will be powered down and marked as power-deny in the show power oper state field.
System is booted with power supplies of different wattage installed and redundancy enabled	System log and syslog messages are generated. The system does not allow you to have power supplies of different wattage installed in a redundant configuration. The lower wattage supply is shut down.
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.

Using the CLI to Pow er Modules Off and On

You can power down a module from the command-line interface (CLI) using the no power enable module slot command.

Note When you use the no power enable module slot command to power down a module, the module's configuration is not saved.

From global configuration mode, use the power enable module slot command to turn the power on for a module that was previously powered down.

Using the CLI to View System Power Status

Use the show power command to view the current power status of system components, as follows:

Router# show power
system power redundancy mode = redundant
system power total = 27.460A
system power used = -6.990A
system power available = 20.470A
FRU-type       #    current   admin state oper
power-supply   1    27.460A   on          on
module         1    -4.300A   on          on
module         2    -4.300A   off         off (admin request)
module         5    -2.690A   on          on
Router#

Using the CLI to Power Cycle Modules

From global configuration mode, use the power cycle module slot command to power cycle (reset) a module; the module powers off for 5 seconds and then powers on.

Determining System Power R equirements

This section provides system power requirements for six- and nine-slot chassis.

Note Use the show power command to display current system power usage.

Nine-Slot Chassis

There are no configuration limitations when using the supervisor engine with the Multilayer Switch Feature Card (MSFC) and Policy Feature Card (PFC) (WS-X6K-SUP1A-MSFC) in a nine-slot chassis with a 1300W power supply. With single or redundant supervisor engines, you can have any combination of other modules and be within the system power capacity.

Six-Slot Chassis

There are no configuration limitations when using the supervisor engine with MSFC and PFC (WS-X6K-SUP1A-MSFC) in a six-slot chassis with a 1000W power supply. With single or redundant supervisor engines, you can have any combination of other modules and be within the system power capacity.

Understanding How Environ mental Monito ring Works

Environmental monitoring of chassis components provides early warning indications of possible component failure to ensure safe and reliable system operation and avoid network interruptions. This section describes the monitoring of these critical system components, enabling you to identify and rapidly correct hardware-related problems in your system.

The following sections describe these environmental monitors: CLI commands and LED indications.

Environmental Monitoring Using CLI Commands

This section describes the show environment CLI command.

Use the show environment [alarm | status | temperature] command to display system status information. Keyword descriptions follow:

alarm---Displays environmental alarms
- status---Displays alarm status
- thresholds---Displays alarm thresholds
status---Displays FRU operational status and power and temperature information.
temperature---Displays FRU temperature information.

LED Indic ations

There are two alarm types, major and minor. Major alarms indicate a critical problem that could lead to the system being shut down. Minor alarms are for informational purposes only, giving you notice of a problem that could turn critical if corrective action is not taken.

When the system has an alarm (major or minor), indicating an overtemperature condition, the alarm is not canceled or any action taken (such as module reset or shutdown) for 5 minutes. If the temperature falls 5°C (41°F) below the alarm threshold during this period, the alarm is canceled.

Table 23-2 lists the environmental indicators for the supervisor engine and switching modules.

Note Refer to the Catalyst 6000 Family Module Installation Guide for additional information on LEDs, including the supervisor engine SYSTEM LED.

Table 23-2: Environmental Monitoring for Supervisor Engine and Switching Modules

Component Alarm Type LED Indication Action

Supervisor engine temperature sensor exceeds major threshold¹

Major

STATUS² LED red³

Syslog message and SNMP trap generated.

If redundancy, system switches to redundant supervisor engine and the active supervisor engine shuts down.

If there is no redundancy and the overtemperature condition is not corrected, the system shuts down after 5 minutes.

Supervisor engine temperature sensor exceeds minor threshold

Minor

STATUS LED orange

Syslog message and SNMP trap generated.

Monitor the condition.

Redundant supervisor engine temperature sensor exceeds major or minor threshold

Major

Minor

STATUS LED red

STATUS LED orange

Syslog message and SNMP trap generated.

If major alarm and the overtemperature condition is not corrected, the system shuts down after 5 minutes.

If minor alarm, monitor the condition.

Switching module temperature sensor exceeds major threshold

Major

STATUS LED red

Syslog message and SNMP trap generated.

Power down the module⁴.

Switching module temperature sensor exceeds minor threshold

Minor

STATUS LED orange

Syslog message and SNMP trap generated.

Monitor the condition.

¹Temperature sensors monitor key supervisor engine components including daughter cards.
²A STATUS LED is located on the supervisor engine front panel and all module front panels.
³The STATUS LED is red on the failed supervisor engine. If there is no redundant supervisor, the SYSTEM LED is red also.
⁴See the "Understanding How Power Management Works" section for instructions.

Component	Alarm Type	LED Indication	Action
Supervisor engine temperature sensor exceeds major threshold¹	Major	STATUS² LED red³	Syslog message and SNMP trap generated. If redundancy, system switches to redundant supervisor engine and the active supervisor engine shuts down. If there is no redundancy and the overtemperature condition is not corrected, the system shuts down after 5 minutes.
Supervisor engine temperature sensor exceeds minor threshold	Minor	STATUS LED orange	Syslog message and SNMP trap generated. Monitor the condition.
Redundant supervisor engine temperature sensor exceeds major or minor threshold	Major Minor	STATUS LED red STATUS LED orange	Syslog message and SNMP trap generated. If major alarm and the overtemperature condition is not corrected, the system shuts down after 5 minutes. If minor alarm, monitor the condition.
Switching module temperature sensor exceeds major threshold	Major	STATUS LED red	Syslog message and SNMP trap generated. Power down the module⁴.
Switching module temperature sensor exceeds minor threshold	Minor	STATUS LED orange	Syslog message and SNMP trap generated. Monitor the condition.

Table of Contents

Power Management and Environmental Monitoring