Whether manual configuration is required for the WMU board to implement wavelength locking


The wavelength locking function is achieved after the centralized wavelength monitoring function is configured on the WMU board.
When configuring the wavelength monitoring function, you need to understand the transmission direction and fiber connections of each OTU board, and check which optical port of the WMU board is connected.
Currently, the following wavelength locking modes are supported:
If the OTU, WMU, and optical-layer boards are configured on the same NE and you configure logical fiber connections, wavelength locking can be automatically performed without any operation.
If the OTU and WMU boards are configured on the same NE but optical-layer boards are configured on another NE, you need to configure the mapping between the OTU board and the WMU board.
If the OTU and WMU boards are configured on different NEs, ensure that the two NEs are in the same optical NE and you need to configure the mapping between the OTU board and the WMU board. Before the configuration, ensure that the DCN communication between NEs is normal.

Other related questions:
WMU board configuration
The WMU board implements centralized monitoring on the fixed wavelengths of the transmit-end OTU board in a system with a channel spacing of 50 GHz or 100 GHz. The board can monitor two multi-wavelength signals. Generally, its IN1 and IN2 ports are connected to the MON ports of OA/FIU/ITL boards in the two directions.

Excessively large wavelength deviation reported by the WMU boards of OSN 6800
Question: The LSX boards with adjustable DRZ reported the WAVE_LEN_OVER alarm, whereas the ones with NRZ fixed wavelengths did not report the alarm. When an optical spectrum analyzer was used for wavelength testing, the wavelength deviations are within the allowed range. No excessively large wavelength deviation is detected. (OSN 6800 NE version, NMS version T2000V2R6) Root cause: None Answer. The wavelengths from the light source of the DRZ adjustable optical modules are controlled by the core temperature without human interference. Wavelength deviation adjustment should not be performed by the software to such modules. V100R003C02B028 does not monitor adjustable optical modules for wavelength deviation, and the deviation threshold was changed from 0.5 GHz to 5 GHz.

Software to implement the wavelength monitoring and management of OMCA boards
To implement high-precision OSNR measurement of boards such as OMCA, you need to configure the OD function on the NMS. The OD function is available only after an OD wavelength monitoring and management license is loaded.

Whether the LOG board is wavelength-tunable
If the code of the OTU board contains T, it indicates that the board is wavelength-tunable.

Whether wavelengths on the NS3 board are tunable
The NS3 board supports tunable wavelengths on the WDM side.

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