Whether it is feasible to reset the system control boards in a new slave subrack only when this slave subrack is added

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1. To add a slave subrack, set the DIP switches, power on the subrack, connect the ETH port, and check whether the indicator status is normal. No reset is required.
2. If the ID of the new subrack conflicts with the ID of an existing subrack, two methods are available. One method is to change the ID of the new subrack first, and then power off the entire NE to restart it. This process adversely affects services on the existing master and slave subrack. The other method is to change the ID of the new subrack, perform a warm reset on all boards in the existing master and slave subracks, and power off the new subrack to restart it.

Other related questions:
Whether a system control board is required in an OSN 8800 platform subrack when it is used as a slave subrack
When an OSN 8800 platform subrack functions as a slave subrack, it does not require a system control board. Its IU17 and IU18 slots can be used to house service boards. When it functions as a master subrack, a system control board is required.

Whether system control boards are required when NG WDM devices are used as slave subracks
1. OSN 8800 subracks are classified into T16, T32, T64, platform subracks, and universal platform subracks (UPSs). Principles for configuring system control boards on OptiX OSN 8800 T16 subracks: For electrical subracks, TN16XCH or TN16UXCM boards must be configured. For optical subracks (master subrack), the TN16SCC board must be configured. For optical subracks (slave subracks), no system control boards need to be configured. Principles for configuring system control boards on OptiX OSN 8800 platform subracks and UPSs: For the master subrack, system control boards must be configured. For slave subracks, no system control boards need to be configured. Principles for configuring system control boards on other OptiX OSN 8800 subracks: System control boards must be configured on both the master and slave subracks. 2. OptiX OSN 9800 subracks are classified into U16, U32, U64, P18, and UPSs. CTU system control boards must be configured on the U16, U32, and U64 subracks of OptiX OSN 9800. 52SCC boards must be configured for OptiX OSN 9800 P18 subracks and UPSs. Principles for configuring system control boards: For the master subrack, system control boards must be configured. For slave subracks, no system control boards need to be configured. 3. System control boards must be configured on both the master and slave subracks of OptiX OSN 6800.

Whether TN52SCC can be used as the system control board in a slave subrack when the master subrack of the OSN 6800 uses TN11SCC as the system control board
If the software version of TN11SCC is later than 5.35 in the master subrack of the OSN 6800, TN52SCC can be configured in a slave subrack. To ensure automatic software synchronization, ensure that the TN11SCC software package includes the TN52SCC software package.

Functions and replacement precautions for the system control board in an OSN 6800 slave subrack
The SCC board in a slave subrack provides the following functions: 1. Communicates with the boards without software to control the working status of the boards. 2. Receives overhead signals from service boards by using RS485A or RS485B buses and processes the overhead signals. 3. Processes the overhead signals that are transmitted from the master subrack and delivers them to the service boards. 4. Detects whether each board in a subrack is online and uses the AUX board to report the status information to the system control board in the master subrack. 5. Provides two RS485 buses for urgent data transmission. 6. Provides required power supplies for the local board and provides 3.3 V centralized power supply backup for the entire OSN 6800 system. In addition, provides power supply backup for the boards whose maximum power consumption is less than 60 W. However, it provides power supply backup only for one board at a time.

Precautions for replacing the system control board in a slave subrack of the OSN 6800
Before replacing a system control board, ensure that the spare board whose board type is the same as the system control board to be replaced. In addition, ensure that battery jumper on the spare board has been correctly set.

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