Dahua NVR Dual ethernet not workable

Dec 13, 2019
1
0
Hk
Hi

I am using several dahua NVRs for my cctv system. But dual ethernet setting with two lan cable cause NVRs offline or only have recording occasionally. I have to remove 1 LAN to resume normal.
The NVR is in fault tolerance mode. If I choose Load balance mode, the NVRs are normal but I need fault tolerance mode.

I am very confused about this problem. Thanks