Whether NE data can be loaded when inconsistency between data on the NE side and data on the NMS side is displayed on the NMS

3

If the data on the NE side is correct, you can upload the NE data.

Other related questions:
Whether the two NMS interfaces of an NE can be concurrently used
Yes, they can be concurrently used.

Whether fiber connections between NEs of OSN 6800 devices can be synchronized to the NMS
On the NMS, you can choose Fiber/Cable/Microwave Link > WDM Fiber/Cable Synchronization to synchronize the fiber connections between NEs of OSN 6800 devices.

Maximum volume of historical performance data that can be stored on an NE
The historical performance database of an NE uses FIFO stack registers which support a limited data volume. When a large number of slots are used on an NE and a large amount of historical performance data needs to be stored, the performance data of each board can be saved for one week.

NE disconnection principles
1. Only the primary gateway is configured. The NMS sends detection frames of all NEs to be managed to the primary gateway at an interval of 1 minute. (The interval can be modified in the configuration file on the NMS. The default interval is 1 minute.) If an NE responds to the corresponding detection frame within 1 minute, the NMS determines that the NE is reachable. If the NMS does not receive any response after sending two consecutive detection frames to an NE (the maximum number of NE detection frames sent by the NMS is configurable and the default value is 3), the NMS reports an NE disconnection event when sending the next (third) NE detection frame. It can be concluded that an NE may have been inaccessible for about 2 minutes when the NE disconnection event is reported by the NMS. 2. Both primary and secondary gateways are configured. The NMS sends NE detection frames to the primary gateway at an interval of 1 minute but does not send NE detection frames to the secondary gateway. If each NE responds to the corresponding detection frame within 1 minute, it indicates that the primary gateway can reach all NEs and the NEs are reachable by the NMS. If the NMS does not receive any response after sending two consecutive detection frames to one or multiple NEs through the primary gateway, the NMS determines that the NEs are unreachable through the primary gateway. Then, the NMS sends the next NE detection frame to both the primary and secondary gateways concurrently, and reports an NE disconnection event. If there is a response to the NE detection frame sent through the secondary gateway, it indicates that the NE is reachable through the secondary gateway. If the path through the primary gateway is not restored, the NMS always sends NE detection frames through the secondary gateway until the primary gateway is restored.

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