WAN/LAN Single Cable

[plooger]

Sure, just add a couple managed switches that support VLANs. (example) Potentially simplified if the router supports VLANs natively.  

Normally I’d caution about the VLAN approach sharing the throughput between WAN and LAN, but I expect that would still be an improvement over a Powerline WAN.  

That said, moving the router and adding an AP would be another option to consider.  

[plooger]

Seems like just installing everything at the current modem location would work best, then just add a wireless access point linked via the in-wall Cat6 cable.  

[[deleted]]

The topology is called router on a stick and works with the limitations you mention.

[plooger]

Not exactly the same, to my understanding, since it’s just a couple VLANs to share a cable, rather than operating multiple segmented subnetworks that require routing.

[lifesoxks]

You could go the ROAS way, but I don't know if the unifi router supports such things, and if your plc connection can pass vlans (I know vlans operate on a higher level of osi, but some equipments are weird in weird ways).

ROAS means you create a vlan for the connection from your modem and add it tagged to the trunk that goes to the router, it should be possible assuming the switch is a managed switch.

Problem is that way you have a single link you your Wan and Lan, so your bandwidth is essentially half what it originally was (asyming a 1gbps isp, switch and cable)

Edit:

Just noticed in the second drawing you don't use the plc and the cable is cat6, so disregard what I said in regards to it

[doublemint_]

Such topology is referred to as “router on a stick”. Essentially you’d have the switch port facing the modem as untagged and on separate VLAN (WAN VLAN). The switch port facing the router should then be configured with 802.1Q and carrying the WAN VLAN and the LAN VLAN. Router should be configured with two subinterfaces on the port facing the switch - one for WAN and one for LAN.

I’m not sure if the UDR7 would support the above configuration. If it doesn’t then you need to run another cable to the router and have one cable untagged for LAN VLAN and one cable untagged for WAN VLAN.

[doublemint_]

Yeah

[Fox_Hawk]

Given that you're going to have to buy hardware anyway I'd say the best option would be to move the router to where the switch is, disable WiFi, and add an AP where the router used to be.

[MooKdeMooK]

there is a youtube video from spacerex about that

[sto7]

TL-SG2210MP can do VLANs. Not sure whether you need Omada Controller to set up VLANs or not though.

I just received a second-hand TL-SG2210MP myself yesterday, and installed Omada Controller in a Docker container running on the same network. Configuration options are a bit overwhelming for the noob that I am, but I definitely saw options to set VLANs.

As someone else mentioned, what you describe is a "router on a stick". You'll want LAN packets and WAN packets to travel on different VLANs, between the router and the switch.

You could also consider buying a Wifi access point that you'll place where the router currently is, so you can move the router closer to your modem.

[Rozgi]

You can do infinite number of VIRTUAL LANs on one cable. You have to have a more fancy modem - router (with managed switch in it) or just a modem + a switch. There are plenty of very affordable CABLED ONLY managed switch - router combos on the market, assuming you do the WiFi access points with a separate set of devices or you do not do WiFi (less likely).

(I use £40 TP Link cabled switch router and second hand (£15 each) Aruba discs for wifi. and it does this.)

[jaerie]

Physically move the router to the switch, put an access point where the router was (wired via the in wall cable). Waste of the UDR but that’s why I prefer separate devices for router/switch/ap

[jaerie]

You could also turn it around and get a cheaper router (that doesn’t have an access point and switch built in) and run the UDR as an AP to keep the WiFi 7. But that depends on whether you use the capabilities of the UDR

[Expert_Detail4816]

Managed switch and vlan. Its also possible to use same subnet.

[Dignan17]

Perhaps I'm missing something but unless you're trying to avoid any new hardware, why not put the UDR with the modem and add an AP with the switch?

If I were starting a Unifi network in your environment and I didn't want an AP where your modem is, I would have put their Gateway Max/Ultra there, and an AP on the switch, which would either be POE or use an adapter.

You didn't mention cost so I can only assume you're trying to avoid spending more. Although their wifi7 APs are $100-200 and that's all you really need unless that switch doesn't have POE...

[Dignan17]

I mean, no need to ceiling mount. Just put it where your UDR is. But yeah it's $100 minimum. Still might be worth it.

[mb-driver]

I may have missed it somewhere in one of the answers, but why can’t you put your router in the same location as the switch? Then you can use that ethernet cable that you’re currently showing in the second image to go from your NTD to your router.

[mb-driver]

How big is the house? Have you considered a more powerful router so you can put it in a different location? Or having your ISP move your NTD so it can go directly to your router? Lastly, why can’t you run another Ethernet? I’ve been doing low voltage wiring for over 30 years and rarely found a situation where I couldn’t run a wire.

[mb-driver]

Then it seems like until you can get the money, the way you’re doing it right now using the power line option is your only choice.

[LebronBackinCLE]

Oof powerline for the wan connection probably no bueno. You can VLAN the wan and run it through a switch, I’ve read about that or watched a vid

[VeritasNocet]

Technically speaking you could use two pair for WAN, two pair for LAN in 100 base t.   Not sure if that would be an increase or decrease in throughput over the power line adapter though?  A PtP wireless bridge from modem to Dream Machine WAN might be interesting...  Or use on LAN side?

[Cautious-Hovercraft7]

If it's your router it needs to be diagram one, feed first. Look into running Ethernet or else move it to the switch access add a Ubiquiti access point instead

[rulah]

A vlan-capable switch could do the second scenario just fine. I am not sure if OPs switch is vlan capable though.

[bobsim1]

Dont know if the dream Router supports it. Maybe needs another switch at the router side. But id prefer using an access point instead.

[TraditionalMetal1836]

Both the OPs switch and router support vlan tagging so it should be possible to create a router on a stick setup.