I needed to add more ethernet ports to the nbn modem so I could install more ip cameras. There was only 1 free port and i needed to install 3 cameras. Got the camera system working fine. I bought this switch https://www.pccasegear.com/products/24910/tp-link-tl-sg105-5-port-desktop-gigabit-switch 2 issues have arised - (less important) after a few days the ip cameras are not connected anymore. Pretty sure the ip address is changing and not sure how to make static. I cant access them by typing their address into chrome. I can fix by going thru the wizard again. Annoying but not that bad - about once every hour or so the net on my gaming PC (differwnt from security pc) will drop out and reconnect after 10 seconds or so. Very annoying when gaming. Ive set ipv4 on both pcs to a static address. Has not helped. Any help with how to troubleshoot would be much appreciated. Cheers.