Method and apparatus for adjusting wavelength for optical line terminal or optical network unit

An apparatus for adjusting wavelength for an Optical Network Unit (ONU) by Optical Line Terminals (OLTs), located at a source OLT, the apparatus comprising a hardware processor, configured to perform programming components stored in a memory, wherein the programming components comprise:

• a first sending component, configured to send an adjustment notification message to a target OLT, wherein the adjustment notification message is used for indicating that an ONU is to be adjusted into a Time-Wavelength Division Multiplexing Channel (TWDM CH) of the target OLT;
• a second sending component, configured to send an adjustment command message to the ONU needing to be adjusted, wherein the adjustment command message is used for indicating that the ONU needing to be adjusted is adjusted into the TWDM CH of the target OLT;
• and
• a start component, configured to start a preset timer of the source OLT;
• a receiving component, configured to, under the condition that the source OLT receives a first adjustment acknowledgement message from the ONU before the preset timer of the source OLT expires, receive an arrival acknowledgement message provided by the target OLT after the target OLT receives a second adjustment acknowledgement message from the ONU, wherein the second adjustment acknowledgement message is used for indicating that an adjustment process of the ONU has been completed, the arrival acknowledgement message is used for indicating that the adjustment process of the ONU has been completed;
• or,
• the apparatus is further configured to, under the condition that the source OLT receives the first adjustment acknowledgement message from the ONU before the preset timer of the source OLT expires, receive a return message sent by the ONU, wherein the return message is a report sent to the source OLT by the ONU after adjustment fails.

An apparatus for adjusting wavelength for an Optical Network Unit (ONU) by Optical Line Terminals (OLTs), located at a target OLT, the apparatus comprising a hardware processor, configured to perform programming components stored in a memory, wherein the programming components comprise:

• a receiving component, configured to receive an adjustment notification message sent by a source OLT, wherein the adjustment notification message is used for indicating that an Optical Network Unit (ONU) is to be adjusted into a Time-Wavelength Division Multiplexing Channel (TWDM CH) of the target OLT;
• a start component, configured to start a preset timer of the target OLT;
• and
• a sending component, configured to, under the condition that the target OLT receives a second adjustment acknowledgment message from the ONU before the preset timer of the target OLT expires, send an arrival acknowledgment message to the source OLT, wherein the second adjustment acknowledgment message is used for indicating that an adjustment process of the ONU has been completed, the arrival acknowledgment message is used for indicating that the adjustment process of the ONU has been completed.