Possible cause of the BUS_ERR alarm that is reported on a TDX board after OptiX OSN 6800 is upgraded

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The possible cause of the BUS_ERR alarm is that the board mode is incorrect. You are advised to modify the value of the line mode parameter.

Other related questions:
Possible cause of the BUS_ERR alarm that is reported on an NS2 board after OptiX OSN 6800 is upgraded
The possible cause of the BUS_ERR alarm is that the board mode is incorrect. You are advised to modify the value of the line mode parameter.

Possible cause of the BUS_ERR alarm reported after WDM equipment is upgraded
If the service mode is incorrectly configured for some boards such as NS2 and TDX, a BUS_ERR alarm will be reported after the upgrade is complete. When a BUS_ERR alarm is reported, verify the line mode.

Slots for holding TDX boards in an OptiX OSN 6800 subrack
In an OptiX OSN 6800 subrack, a TDX board can be installed in any slots of IU1 to IU17.

Possible causes for the CHAN_ADD alarm on the MCA board of the OSN 6800/8800
The CHAN_ADD alarm indicates that single-wavelength signals are added. This alarm is generated when the MCA board detects wavelength addition after it scans the optical spectrum. The possible causes of the CHAN_ADD alarm are as follows: 1. The configurations for wavelength monitoring are incorrect. The received wavelengths are not configured as the monitored wavelengths. 2. The MCA board is faulty. The procedure for handling the CHAN_ADD alarm is as follows: 1. On the U2000, check whether the configurations for wavelength monitoring of the MCA board are incorrect. If the configurations are incorrect, modify the configurations to ensure that the monitored wavelengths and the number of monitored wavelengths are consistent with the received wavelengths and the number of received wavelengths. 2. If the alarm persists, test the optical spectrum data of the input optical signals using an optical spectrum analyzer. If the data is normal, the optical spectrum analyzer module of the MCA board may be faulty. When this occurs, replace the MCA board.

Possible cause of the OTU3_LOF alarm that is transiently reported by the NS3 board on the OSN 8800
The possible cause is that the embedded TDC module on the NS3 board is faulty. In general, the alarm can be cleared after the NS3 board is replaced.

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