Green Ethernet Local Interface Status

For platforms that include Green Energy features, the Green Ethernet Local Interface Status page shows information that each EEE (Energy Efficient Ethernet)-enabled interface transmits in the LLDP (Link Layer Discovery Protocol) TLVs (type length values) to its link partner (the remote system). The TLVs are defined in the IEEE 802.1AB standard and provide information about the capabilities of the local device.

To access this page, click System > Advanced Configuration > Green Ethernet > Local in the navigation menu.

Green Ethernet Local Interface Status Fields

Field	Description
Interface	The interface associated with the rest of the data in the row. The table displays all interfaces that are enabled for EEE.
Tw_sys_tx	The system wake time (Tw_sys) that the interface transmits. The wake time is the amount of time allowed to wake up from the low-power state that occurs when no data is transmitted.
Tw_sys_tx Echo	The system wake time the interface sends to the link partner when it receives a Tw_sys_tx request from the link partner.
Tw_sys_rx	The system wake time that the local interface requests from the remote link partner.
Tw_sys_rx Echo	The remote system's receive Tw_sys that was used by the local system to compute the Tw_sys that it can support.
Fallback Tw_sys	The value of fallback Tw_sys that the local system requests from the remote system. The fallback is the second preference of the receiving system when requesting the Tw_sys from its transmitting partner.
Tx DLL Enabled	The initialization status of the EEE transmit DLL (Data Link Layer) management function on the local system.
Tx DLL Ready	The DLL ready transmission status of the interface. This field indicates whether the transmission system initialization is complete and is ready to update/transmit LLDP Data Units (LLDPDUs) containing the EEE TLVs.
Rx DLL Enabled	The status of the EEE capability negotiation on the local interface.
Rx DLL Ready	The DLL ready receive status of the interface. This field indicates whether the local interface initialization is complete and is ready to update/receive LLDPDUs containing EEE TLVs.