Sending WAN and LAN over one Ethernet cable
The is in the basement, while the router is upstairs. Only one cable runs between the two floors, so the internet signal must go upstairs to the router and the home network must come back down to the basement switch on that same cable. The internet is Deutsche Glasfaser, which requires VLAN 360 when the is connected directly to the router.
The setup uses two USW Flex es, a UCG Fiber router, and a temporary TP-Link TL-SG105E switch. The plan is to keep the normal home network on VLAN 1 and separate the internet-side signal on VLAN 360. The port on the basement switch and the router on the upstairs switch are set around VLAN 360, while the link between the two switches allows all traffic with VLAN 1 as the default.
The router was tested both with and without VLAN settings. The connection still does not work, even after waiting an hour for the ’s DHCP lease to clear.
Key points
- The is in the basement and the router is upstairs.
- One cable must carry WAN traffic up and LAN traffic back down.
- Deutsche Glasfaser requires VLAN 360 for a direct fiber--to-router setup.
- The hardware includes two USW Flex es and a UCG Fiber router.
- Waiting for the ’s DHCP lease to clear did not fix the current setup.