Removal and re-insertion of a fan on OSN 6800

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Remove two screws and then remove the fan. The offline duration of a fan cannot exceed 3 minutes.

Other related questions:
Methods for removing and reinserting the fan on an OptiX OSN 6800
Remove two screws and then remove the fan. The offline time should not exceed 3 minutes.

Whether the OSN 6800 inserts LCK signals
When LCK insertion is enabled, the service boards on the OSN 6800 will stop sending client-side signals and they will insert LCK signals to the WDM side. When this occurs, an ODUk_PM_LCK alarm will be reported on the downstream board. When LCK insertion is disabled, no LCK signals will be inserted.

Whether optical-layer ASON services are rerouted after an OBU board is removed and re-inserted
Question: If frontline engineers remove an OBU board from the OSN 6800 V100R007C02SPC200 in the optical-layer ASON network, and the corresponding FIU board does not report any alarms, will ASON services on the FIU board be rerouted? The OMS_TEL_DOWN alarm is generated on the TE link xxx as follows: OMS_TEL_DOWN CR start 2013-11-18 14:29:30+05:30 None NSA TEL Node=172.16.0.113,TE LinkID=0x8;,Sub-shelf=0,Board=2,Port=1,Error=0x2; Answer: In versions earlier than V100R007C00, after an OBU board is removed, ASON services on the corresponding FIU board are not rerouted. Since V100R007C00, the offline alarms of an OBU board are transferred to the corresponding FIU board. As a result, ASON services on the FIU board are rerouted. In conclusion, after an OBU board is removed from OSN 6800 V100R007C02SPC200, ASON services are rerouted. Suggestion and conclusion: By default, in versions earlier than V100R007C00, optical-layer ASON services are rerouted on the condition that the FIU board reports the MUT_LOS or BD_STATUS alarm. Since V100R007C00, optical-layer ASON services are also rerouted on the condition that boards on the line dimension report the BD_STATUS alarm. These boards can be OA boards, and multiplexer/demultiplexer boards.

Whether services are affected if an OSN 8800 fan board is removed
Removing the fan board from the subrack will sharply increase the temperature inside the subrack, adversely affecting stable equipment running. Services may be affected and even equipment may be damaged.

Impact if the ST2 board of the OSN 8800 is inserted into an extended OSN 6800 subrack due to insufficient slot resources
Normal optical monitoring can be implemented, but the IEEE 1588v2 feature is affected. In general, no STG board is required on the OSN 6800. If the IEEE 1588v2 function is required, STG boards need to be configured on the OSN 6800.

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