@Babun-Sikder The specific problematic phenomenon of offline? Is the camera actually working properly? It just shows up as offline on the app? If you reopen the APP or re-login the APP, can it fix?...

@Jimboboy Jimboboy wrote Does the IP isolation only apply to those connected to the CPE, i.e to each other? Yes, I think so.Check this: As for your needs, you can think about the VLAN or ACL settings...

@wiwisjtb This is a bit of a strange question, how exactly is the subnet set up? Is it on the same network segment as the DHCP address pool or is it on a different segment? Can you give an example...

@Arska The normal topology should be: ER7206 SFP port -----SFP Module (TL-SM321B) -------Fibre ----ISP. So what you are saying is that if you use it as above, the SFP port will not work properly？ But...

@kashif789us If you use a controller to manage it, you can set the interval on the controller.

@Alam0786 The SFP WAN need to connect to a SFP Module to work, not a media converter. @Eguliker SFP ports are generally auto-negotiated. @Arska What is your network topology? How do you connect these...