I have a CGN3 modem (Rogers) connected to a TP Link switch. This was working for many months but it has stopped working. Now, PCs get assigned 169.254.x.x when the switch is connected. Connecting directly to the modem is OK. Even those connected directly the modem-hybrid do not work any longer. The WiFi continues to work. Is this a DHCP issue?
- I've tried factory resetting the modem -- no success
- Tried different Ethernet cable, nothing
- I've tried rebooting both devices with no success
- I have NOT tried changing the switch yet
What should my next steps be? Is it possible for a switch to cause all ports to stop working, yet WiFi to continue to work?