viafax999 wrote:I'm surpised anything works with a setup like that!! Where on earth do you have the modem connected to on the phone side? and why would you do it?
The OP has a MDU shared ONT with a VDSL WAN connection. The Zyxel 861 is a VDSL modem.
@OP .
- Have you configured any of your devices for static IP addresses?
- Could you possibly have duplicate IP addresses on your LAN.
- What happens if you change LAN ports around?
Sounds to me like you might have a bad router.