this post was submitted on 01 Dec 2024
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[–] [email protected] 92 points 2 weeks ago* (last edited 2 weeks ago) (7 children)

Very weird ethernet setup. Gives you a 2.5g port so you could take advantage of the faster fiber many people have access to now, but only a 1g port so you can't even use the benefits of the faster network on your wired LAN. Not something most people's internet connections care about, but a weird thing to include regardless; it would have been better to leave them both 1g ports and shave $5+ off the sales price.

I'm sure this is a limit of the commodity chipset but it honestly doesn't have a place in the network I'm planning to build out as fully 2.5g compatible next year.

[–] [email protected] 56 points 2 weeks ago

I was going to say "with a 2.5g wan port and 1g switch ports, it can saturate 2.5 switch ports" but then I realized that it doesn't have switch ports, it has one WAN and one LAN port. Definitely a weird choice.

[–] [email protected] 32 points 2 weeks ago (2 children)

The included MT7976C wifi can theoretically saturate the 2.5 Gbps uplink on its own. The use case is overall throughput for a mixture of wired and wireless devices.

[–] [email protected] 17 points 2 weeks ago (1 children)

It doesn't make sense to me to future proof wifi but not wired for $5 more, but maybe it makes sense to people in rural places

[–] [email protected] 11 points 2 weeks ago

Let's be realistic. How many devices support a mainline version of OpenWRT and have more than one 2.5 Gbe port?

This thing is primarily a wifi router and access point. The available Ethernet ports, which are limited to what the chipset supports, are going to be more than sufficient for the majority of users.

If your main concern is wired throughput to the Internet, you are not the target audience for OpenWrt. The literal point of the OpenWrt project was to be an open source firmware for the WRT54G wireless router. The project has of course grown since then, but that is still its primary intended use case.

You are much more likely to find what you need in pfSense/OPNsense/etc, and on more powerful hardware. I would be way more concerned with the fact that it only has 1 GB RAM.

But if you still want to take that stance, there is nothing stopping you from reconfiguring the 2.5 Gbe port as a VLAN trunk and hanging it off a managed switch. Put your uplink in one VLAN and your LAN in another. That is going to be more than sufficient to saturate the 1 Gbps fiber connection that most people have (or at least asymmetrically saturate the 2 Gbps connection that some people have).

Or if you don't like that, just do the routing on the switch. If your primary concern is wired throughput, you'll probably already be doing that anyway. Then just use this thing as an AP, in which case the one port is sufficient.

[–] [email protected] 1 points 2 weeks ago* (last edited 2 weeks ago)

While that's great, it's not of much use to most people if they can't saturate their link from either wifi or ethernet at separate times. It leaves a lot of wasted capacity imo.

[–] [email protected] 16 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

I'm struggling to think what one can even do with just two ethernet ports of different speeds. It's begging to be used as a gateway, VPN or firewall but you can't because you'll top out at 1G anyway. And assuming one of them is the LAN side, supposedly it'll be going to a switch so the router will never see LAN traffic anyway, only stuff through it which hits the bandwidth limitation.

I guess technically one could bond the WiFi and 1G link to make use of the 2.5G link? Or as an AP like it's got 2.5G upstream and passes through another AP down the line using the 1G port.

Very questionable specs.

E: it occured to me this looks like a potentially really good standalone AP if you give it 2.5G upstream and then branch off to another device down the line like some Ubiquiti ones do. But the form factor is ugly as hell to be mounted on a ceiling...

[–] planish 5 points 2 weeks ago (1 children)

Usually the routers you install OpenWRT on are really a CPU with one port to a VLAN-capable switch, and the port labeled WAN on the device is just VLAN'd separately by default. One cool thing OpenWRT lets you do on "normal" hardware is change the VLAN settings on the switch ports which are not accessible under stock firmware.

But if they are shipping "just" the router piece and making people go get their own VLAN-capable switch, I'm not sure what hardware exactly they expect people to use? And I'm not sure what being connected to the switch over one real 2.5G cable is going to do to LAN/WAN throughput, vs. how a "normal" router ties the CPU into the switch through means not known to mortal minds. Maybe it is just as good, maybe it is a huge bottleneck. It is definitely going to add cost over the $89 sticker price.

But if most people are just going to run fiber modem straight to WiFi, maybe this is the right config actually?

[–] [email protected] 1 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

The key there is the switch does most of the work in hardware, so you can have 1G going between all ports with no CPU usage, so the internal 1G port doesn't matter as much, and the hardware acceleration lets it efficiently handle routing across VLANs without involving much of the internal port. Those internal switches can usually handle VLANs and basic NAT nesrly entirely on its own.

With a single external 2.5G port you lose that because your traffic will have to go in the router and back out to the switch to cross VLANs, so it's basically a 1.25G link. And it needs to be a managed switch too since the router doesn't come with a built-in one anymore. Best you can do is software VLANs but the other device will need to also use the VLAN explicitly in that case, as there's no switch to give you untagged ports.

[–] planish 1 points 2 weeks ago

So you would have to pair this with a switch that not only does VLANs but also somehow does your NAT for you.

[–] [email protected] 2 points 2 weeks ago
[–] [email protected] 8 points 2 weeks ago (2 children)

You can run a router with just one Ethernet port on it. That's what subnets are for.

Also, if they only had two gigabit ports with WiFi, they'd be directly competing with the nano-pi for market share. https://www.friendlyelec.com/index.php?route=product/product&product_id=296

Still, I'm actually with you. That is a weird choice to make.

[–] [email protected] 8 points 2 weeks ago (1 children)

s/subnets/vlans/

It's not a great idea to have multiple layer 3's sharing the same layer 2.

[–] [email protected] 2 points 2 weeks ago

yes. that. Thank you. My google and word memory were not helpful when i posted that.

[–] [email protected] 4 points 2 weeks ago (1 children)
[–] [email protected] 1 points 2 weeks ago

Or sub interfaces?

[–] [email protected] 6 points 2 weeks ago

My Asus XT8 has a similar 2.5gb Wan but the other ports are 1gb

[–] [email protected] 5 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

I just got upgraded to 10 Gbit internet the other week and was looking at routers, and it seems to be a surprisingly common configuration (or routers with 10 Gbit WAN and 2.5 Gbit LAN ports). I think router manufacturers are banking on 99% of people only caring about Wi-Fi and then being fooled by those "up to 7000 mbit over wifi!" numbers. And then due to scale those are the only chipsets that are affordable.

[–] [email protected] 4 points 2 weeks ago (1 children)

Yeah. Tbf at higher bitrates like 10G, if you really want to take full advantage of that insane amount of bandwidth, you really need to have a dedicated router/firewall machine, then use a 10G switched network with a standalone AP and then ethernet to as many devices as you can reasonably reach. 10G is expensive to use, sorry, and your desktops will likely need new NIC pcie cards too if you want to be able to really push 10G to it's limits.

My home network philosophy has always been that any one device (wifi devices excluded) should be able to use the full capabilities of the network. But that has always been with comparatively shit home internet.
If you have a very large network with a lot of devices and users, then it can be better to just build out 2.5G to each device but have 10G backhaul to your modem just so the bandwidth can be more evenly divided.

[–] [email protected] 2 points 2 weeks ago* (last edited 2 weeks ago)

Yeah after doing a bunch of testing what I settled on was a used ThinkCentre Tiny with a dual 10G NIC running OpenWRT, and then a cheap Chinese PoE switch with 4x2.5G ports and 2x10G SFP+ ports. Router and my main computer on 10G, NAS and Wi-Fi (UniFi AP that I've had since before) on 2.5G, and then everything else is on a separate 1G switch.

For a home network, 2.5G LAN is really the sweet spot. The hardware is affordable now, the spinny drives in my NAS can't realistically do more than 200 MB/s for a real workload, there are no single-stream downloads online that are going to be faster (the fastest "normal" download I've seen is 2Gbit from Microsoft)

[–] sugar_in_your_tea 1 points 2 weeks ago

Yeah, you'd use the 1G port for uplink and 2.5G for internal network use, assuming most of your traffic is internal (e.g. streaming from a NAS or something).

But yeah, the port setup is weird. I'd honestly rather have all 1G ports and have more of them (w/ active PoE) than a single 2.5G port.