- Preface
- Product Overview
- Virtual Switching Systems (VSS)
- IP Unicast Layer 3 Switching
-
- Cisco IOS ACL Support
- Cisco TrustSec (CTS)
- AutoSecure
- MAC Address-Based Traffic Blocking
- Port ACLs (PACLs)
- VLAN ACLs (VACLs)
- Policy-Based Forwarding (PBF)
- Denial of Service (DoS) Protection
- Control Plane Policing (CoPP)
- Dynamic Host Configuration Protocol (DHCP) Snooping
- IP Source Guard
- Dynamic ARP Inspection (DAI)
- Traffic Storm Control
- Unknown Unicast Flood Control
- IEEE 802.1X Port-Based Authentication
- Configuring Web-Based Authentication
- Port Security
- Lawful Intercept
- Online Diagnostic Tests
- Migrating From a 12.2SX QoS Configuration
- Index
Power Management
- Power Management Overview
- How to Enable or Disable Power Redundancy
- How to Power Modules Off and On
- How to Display System Power Status
- How to Power Cycle Modules
Note ● For complete syntax and usage information for the commands used in this chapter, see these publications:
http://www.cisco.com/en/US/products/ps11846/prod_command_reference_list.html
- Cisco IOS Release 15.1SY supports only Ethernet interfaces. Cisco IOS Release 15.1SY does not support any WAN features or commands.
http://www.cisco.com/en/US/products/hw/switches/ps708/tsd_products_support_series_home.html
Participate in the Technical Documentation Ideas forum
Power Management Overview
In systems with redundant power supplies, both power supplies must be of the same wattage. The Catalyst 6500 series switches allow you to use both AC-input and DC-input power supplies in the same chassis. For detailed information on supported power supply configurations, see the Catalyst 6500 Series Switch Installation Guide.
The modules have different power requirements, and some configurations require more power than a single power supply can provide. The power management feature allows you to power all installed modules with two power supplies. However, redundancy is not supported in this configuration because the total power drawn from both power supplies is at no time greater than the capability of one supply. Redundant and nonredundant power configurations are described in the following sections.
How to Enable or Disable Power Redundancy
To disable or enable redundancy (redundancy is enabled by default) from global configuration mode, enter the power redundancy-mode combined | redundant commands. You can change the configuration of the power supplies to redundant or nonredundant at any time.
To disable redundancy, use the combined keyword. 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 power supply fails and there is not enough power for all of the previously powered-up modules, the system powers down those modules.
To enable redundancy, use the redundant keyword. In a redundant configuration, the total power drawn from both power supplies is not greater than the capability of one power supply. If one supply malfunctions, the other supply can take over the entire system load. When you install and power up 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.
To view the current state of modules and the total power available for modules, enter the show power command (see the “How to Display System Power Status” section).
Table 4-1 describes how the system responds to changes in the power supply configuration.
How to Power Modules Off and On
To power modules off and on from the CLI, perform this task:
|
|
|
---|---|---|
Note When you enter the no power enable module slot command to power down a module, the module’s configuration is not saved.
This example shows how to power on the module in slot 3:
How to Display System Power Status
The show power command displays the current power status of system components:
The show power command displays the current power status of a specific power supply:
You can display power supply input fields by specifying the power supply number in the command. A new power-output field with operating mode is displayed for power supplies with more than one output mode. Enter the show environment status power-supply command as follows:
How to Power Cycle Modules
You can power cycle (reset) a module from global configuration mode by entering the power cycle module slot command. The module powers off for 5 seconds, and then powers on.
http://www.cisco.com/en/US/products/hw/switches/ps708/tsd_products_support_series_home.html
Participate in the Technical Documentation Ideas forum