Dual wan - Will my setup work?

LordVader · 28 Jan 2021 at 22:55

Thinking of getting a dual wan router to act as a backup/fallout to my 4g home broadband.

My local mast does go down from time to time and I lost all connectivity so even though FTTC is quite poor where I live at least it should always work.

My LTE Huawei is in the loft along with its antennas. This is connected to multiple mesh WiFi nodes (deco M5's) via Cat5e cable which goes to several rooms in the house.

Obviously there is no phone socket up in the loft so I would need to connect the VDSL modem near a BT socket.

My question is can I place a dual wan router say in my living room and connect the VDSL modem and LTE 4G to it via a switch not a direct link?

bremen1874 · 28 Jan 2021 at 23:46

You want the VDSL and the 4G both connected directly to the dual WAN router. Your mesh system then needs to be connected to the router.

LordVader · 29 Jan 2021 at 07:37

bremen1874 said:
You want the VDSL and the 4G both connected directly to the dual WAN router. Your mesh system then needs to be connected to the router.

Isn't possible . All the ethernet in the house is fed into a 8 port switch in the attic

bremen1874 · 29 Jan 2021 at 11:06

LordVader said:
Isn't possible

Not possible?

If your VDSL modem is separate it can be as far away from the router as you'd like (within cable limitations).

There's not enough information to be able to tell you exactly how to do it.

LordVader · 31 Jan 2021 at 11:34

Ok will try and explain.

4G modem (Which is in a bedroom)--------> 8 port switch in attic

The attic switch then feeds 4 rooms in the house of which only 1 has a BT socket. Here is a very crud mspaint diagram lol

bremen1874 · 31 Jan 2021 at 11:51

ADSL or VDSL?

I'd do the following. As long as you didn't skimp on the cabling and ran at least two cables to the living room you'll still be able to connect wired devices down there.

LordVader · 31 Jan 2021 at 12:03

VDSL. Unfortunately only single cable to each room.

Was planning using a Draytek vigor 2860 as the dual wan router. Connect the VDSL directly to that.

bremen1874 · 31 Jan 2021 at 12:16

Without two cables I can't see any simple solutions.

If you could live with parts of your network only running at 100Mbps instead of a Gigabit you could split the cable you have.

Hyburnate · 31 Jan 2021 at 12:20

You'll end up with double NAT and a super weird set-up, this needs to happen exactly as bremen says.

kayomani · 31 Jan 2021 at 12:25

Get a managed switch and put the vsdl on its own untagged vlan, you'll need a firewall aware of vlans e.g. opnsense as your basically putting two sets of traffic down the cable between the switch and router.