@Vincent-TP As I mentioned earlier, the current installation will affect Site 2’s network because it uses an RSTP port on the loop (CPE_1). No this is incorrect RSTP is on the switch connected to...

@Vincent-TP Site 3 has a number of cameras and smart devices connected to it, Site 3 works on fiber all the time apart from when the fiber connection fails usually due to a SFP Module failure then...

@Vincent-TP Hehehe, sorry ok here goes... So, do you have three sites in total? Yes Based on the following topology, you need to be able to continuously access the devices at Site 2 Yes. from Site 3...

@Vincent-TP Sorry maybe i misunderstand, should it not be like the drawing below when the fibre goes down? Otherwise CPE3 would not connect to CPE1 to get internet. In this topology, once the third...

@Vincent-TP Thank you for your reply. I have attached an updated drawing for your review. To confirm the setup, all cameras and smart devices are either connected directly to the switches or via...

@Vincent-TP It's like you're first image see below, The line between the CPE710s is a transmission connection not a hard wired connection.