Hi guys, I have some problems with the ping test.   I have MS410 that connected to L2 switch, and NVR#1,2,3,4  connected to L2 switch.   On my dashboard,   1. Network-wide - Monitor - Clients - NVR#  - Ping 2. MS410 - Tools - Ping(NVR# 's IP) 3. MS410 - Port - Status - Current clients - NVR#  - Ping     NVR#1: 1,2 is fine, but doesn't work on 3. NVR#2,3,4 : 1,2,3 is fine.   Why doesn't only one NVR work on 3?       ... View more