green-ethernet energy-detect (global)

To enable Green-Ethernet Energy-Detect mode globally, use the green-ethernet energy-detect Global Configuration mode command. To disable this feature, use the no form of this command.

Syntax

green-ethernet energy-detect no green-ethernet energy-detect

Parameters

This command has no arguments or keywords.

Default Configuration Disabled.

Command Mode

Global Configuration mode

Example

switchxxxxxx(config)#  green-ethernet energy-detect

green-ethernet energy-detect (interface)

Use the green-ethernet energy-detect Interface configuration mode command to enable Green Ethernet-Energy-Detect mode on a port. Use the no form of this command, to disable it on a port.

Syntax

green-ethernet energy-detect no green-ethernet energy-detect

Parameters

This command has no arguments or keywords.

Default Configuration Enabled.

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

Energy-Detect only works on copper ports. When a port is enabled for auto selection, copper/fiber Energy-Detect cannot work.

It takes the PHY ~5 seconds to fall into sleep mode when the link is lost after normal operation.

Example

switchxxxxxx(config)#  interface te1/0/1 switchxxxxxx(config-if)#  green-ethernet energy-detect

green-ethernet short-reach (global)

Use the green-ethernet short-reach Global Configuration mode command to enable Green-Ethernet Short-Reach mode globally. Use the no form of this command to disabled it.

Syntax

green-ethernet short-reach no green-ethernet short-reach

Green Ethernet                                                                                                                                                                                                18

Parameters

This command has no arguments or keywords.

Default Configuration Disabled.

Command Mode

Global Configuration mode

Example

switchxxxxxx(config)#  green-ethernet short-reach

green-ethernet short-reach (interface)

Use the green-ethernet short-reach Interface Configuration mode command to enable green-ethernet short-reach mode on a port. Use the no form of this command to disable it on a port.

Syntax

green-ethernet short-reach no green-ethernet short-reach

Parameters

This command has no arguments or keywords.

Default Configuration Disabled.

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

The VCT length check can be performed only on a copper port operating at a speed of 1000 Mbps. If the media is not copper or the link speed is not 1000, Mbps Short-Reach mode is not applied.

When the interface is set to enhanced mode, after the VCT length check has completed and set the power to low, an active monitoring for errors is done continuously. In the case of errors crossing a certain threshold, the PHY will be reverted to long reach.

Note that EEE cannot be enabled if the Short-Reach mode is enabled.

Example

switchxxxxxx(config)#  interface te1/0/1 switchxxxxxx(config-if)#  green-ethernet short-reach

green-ethernet power-meter reset

Use the green-ethernet power meter reset Privileged EXEC mode command to reset the power save meter.

Syntax green-ethernet power-meter reset

Parameters

This command has no arguments or keywords.

Default Configuration

None

Command Mode

Privileged EXEC mode

Example

switchxxxxxx#  green-ethernet power-meter reset

show green-ethernet

To display green-ethernet configuration and information, use the show green-ethernet Privileged EXEC mode command.

Syntax

show green-ethernet [interface-id | detailed ]

Parameters

• interface-id—(Optional) Specifies an Ethernet port
• detailed—(Optional) Displays information for non-present ports in addition to present ports.

Default Configuration

Display for all ports. If detailed is not used, only present ports are displayed.

Command Mode

Privileged EXEC mode

User Guidelines

The power savings displayed is relevant to the power saved by:

• Energy detect
• Short reach

The EEE power saving is dynamic by nature since it is based on port utilization and is therefore not taken into consideration.

The following describes the reasons for non-operation displayed by this command.

If there are a several reasons, then only the highest priority reason is displayed.

Energy-Detect Non-Operational Reasons
Priority	Reason	Description
1	NP	Port is not present
2	LT	Link Type is not supported (fiber, auto media select)
3	LU	Port Link is up – NA

Example

Short-Reach Non-Operational Reasons
Priority	Reason	Description
1	NP	Port is not present
2	LT	Link Type is not supported (fiber)
3	LS	Link Speed Is not Supported (10mbps,100mbps)
4	LL	Link Length received from VCT test exceeds threshold
6	LD	Port Link is Down – NA

switchxxxxxx#  show green-ethernet   Energy-Detect mode: Enabled   Short-Reach mode: Disabled   Power Savings: 24% (1.08W out of maximum 4.33W)   Cumulative Energy Saved: 33 [Watt*Hour]   Short-Reach cable length threshold: 50m   Port     Energy-Detect       Short-Reach           VCT Cable   Admin Oper Reason   Admin Force Oper Reason   Length ----  ----- ---- -------  ----- ----- ---- -------  -----te1/0/1   on    on             off  off   off te1/0/2   on    off  LU        on   off   on           < 50 te1/0/3   on    off  LU        off  off   off