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EEE has the following restrictions:
Changing the EEE configuration resets the interface because the device has to restart Layer 1 autonegotiation.
You might want to enable the Link Layer Discovery Protocol (LLDP) for devices that require longer wakeup times before they are able to accept data on their receive paths. Doing so enables the device to negotiate for extended system wakeup times from the transmitting link partner.
Energy Efficient Ethernet (EEE) is an IEEE 802.3az standard that is designed to reduce power consumption in Ethernet networks during idle periods.
EEE is disabled by default.
You can enable or disable EEE on an interface that is connected to an EEE-capable link partner.
|
Command |
Purpose |
|---|---|
|
show eee capabilities interface interface-id |
Displays EEE capabilities for the specified interface. |
|
show eee status interface interface-id |
Displays EEE status information for the specified interface. |
|
show eee counters interface interface-id |
Displays EEE counters for the specified interface. |
Following are examples of the show eee commands
Switch#show eee capabilities interface gigabitEthernet 2/0/1 Gi2/0/1 EEE(efficient-ethernet): yes (100-Tx and 1000T auto) Link Partner : yes (100-Tx and 1000T auto) ASIC/Interface : EEE Capable/EEE Enabled
Switch#show eee status interface gigabitEthernet 2/0/1 Gi2/0/1 is up EEE(efficient-ethernet): Operational Rx LPI Status : Low Power Tx LPI Status : Low Power Wake Error Count : 0 ASIC EEE STATUS Rx LPI Status : Receiving LPI Tx LPI Status : Transmitting LPI Link Fault Status : Link Up Sync Status : Code group synchronization with data stream intact
Switch#show eee counters interface gigabitEthernet 2/0/1 LP Active Tx Time (10us) : 66649648 LP Transitioning Tx : 462 LP Active Rx Time (10us) : 64911682 LP Transitioning Rx : 153
This example shows how to enable EEE for an interface:
Device# configure terminal Device(config)# interface gigabitethernet1/0/1 Device(config-if)# power efficient-ethernet auto
This example shows how to disable EEE for an interface:
Device# configure terminal Device(config)# interface gigabitethernet1/0/1 Device(config-if)# no power efficient-ethernet auto
| MIB | MIBs Link |
|---|---|
|
All the 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: |
| Description | Link |
|---|---|
|
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|
Release |
Modification |
|---|---|
|
Cisco IOS XE 3.3SECisco IOS XE 3.3SE |
This feature was introduced. |
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