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Lemmings, please give us your info dump.
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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This is a science community. We use the Dawkins definition of meme.
Nobody wants my info dump. I know way too much about networking and computers. The topics are massively deep, like iceberg levels of deep. One for each topic.
I could lecture for an entire day on the nuance and considerations of picking a Wi-Fi channel, or you can ignore me and just hit "auto" which may or may not take some, or all, of my considerations into account when selecting a channel.
If anyone is keen to hear some generally good advice about home networking, here's my elevator speech:
Wire when you can, wireless when you have to. Wi-Fi is shared and half duplex, every wired connection is exclusive to the device and full duplex. If you can't Ethernet, use MoCA, or powerline (depending on what internal power structures you have, this can be excellent or unusable, keep your receipts). Mesh is best with a dedicated backhaul, better with a wired backhaul. Demand it from any system you consider. The latest and greatest Wi-Fi technology probably won't fix whatever problem you're having, it will only temporarily reduce the symptoms and you won't notice it for a while. Be weary about upgrading and ask yourself why you require the upgrade. Newer wireless won't fix bad signal, or dropouts.
For everything else, Google. That's how I find most of the information I know.
Good luck.
I'll be around in case anyone has questions. No promises on when I'll be able to reply tho.
5 or 6Ghz backhaul on the mesh?
Should I buy consumer or small business hardware?
Recommended brand(s)?
High end consumer aka prosumer, which is only really one brand, ubiquiti. Specifically their unifi stuff.
Or used mid range business stuff, Cisco, Aruba, juniper. The pinch here is that you usually need specialized knowledge to configure this class of device. I've also used Cisco, watchguard, Fortinet, Sophos, sonicwall, and probably others for firewalls. I prefer Sonicwall for some very specific reasons about how they structure their configuration, but for anyone who isn't a certified sonicwall tech, I'd point at Sophos. Their stuff seems to be a fair balance of configurability and user friendliness. If you're instant on new business stuff and you have the money for it, Sophos for the firewall, Aruba instanton for switching and Wi-Fi.
The benefit to unifi is user friendliness and a unified control console. If you're not an IT professional or a similar technical job, unifi will provide plenty of what you need and leave out the unnecessary knobs that needs like me want to see.
Be prepared to spend several hundred on the networking if you're going to do it right, there are some places you can trim some costs, but before you nope it from sticker shock, consider how much you spend per year on Internet service, and then consider how much the router/firewall + switch + access points are in comparison... And those are things you don't need to buy every year.
Edit: I forgot to mention the backhaul. The decision will depend on the wireless environment. You might be able to save some cash having 5ghz backhaul, but it's going to struggle in dense environments, so consider spending some extra on 6ghz if you're in a medium to high density housing situation. Good luck
Dude these type of replies are what had made reddit such a great time sink, even random browsing you may find something incredible in the comments. Thank you
Thanks. I've been on hiatus for a bit. I'm around.
I still won't go back to that place either way
Tell Me everything you want about MAC addresses
Is this a kink?
The first six hexadecimal digits of the Mac address are referred to as the oui, or organizationally unique identifier. They are supposed to all be registered, but with modern systems, mac address randomization is common, so the Mac address in use can be little better than nonsense.
I have a theory that some of the more budget oriented manufacturers (think Ali express), just don't bother using a registered mac address at all.
This all makes my job harder as a network admin, I usually need to look up what a device is by mac address to help identify what it is and what it's doing. I need to make sure everything is on the right network, and I can't do that if I don't know what anything is.
The last six hexadecimal digits of the Mac are simply to uniquely identify the interface that the Mac is burned into. This also means that any systems with multiple network ports, have different mac address on each port. Some things are exempt, like network switches, but for the most part, every interface has, or is supposed to have, a unique mac address.
Also, the mac isn't hex, it's binary. Hex is just how we've decided to present it to users. The switches, routers, and interfaces don't work with the hex, only the binary. Same for IP addresses, which normal are shown in "dotted decimal notation", but are just binary. But you didn't ask about IP.
Did you need me to whisper ouis into your ear and you can guess what company is registered to that oui?
So if you plug the same device into a different network using the same port, it's the same MAC?
The device mac doesn't change unless mac randomization is on.
I hate that, as far as I know, on Android you can't choose the "randomized" MAC
The MAC, at least as it was conceptualised (as they said, MAC randomisation etc. mess with this), is a unique identifier for that specific device. It doesn't change, and only one device has that specific MAC.
Or more specifically, that specific network adaptor, the hardware responsible for connecting to networks. So one computer might have multiple MACs if, for example, it has an Ethernet port and a wifi card.
Fun fact, when I worked for Alstom and programmed their electric substations, they had a 10bit network and proprietary network cards, and the prototypes sometimes had the same MAC address ๐๐
Nothing sexier than someone who knows what they're talking about.
Thanks a lot for sharing you experience! I recently saw some people I follow on youtube talk about fibre as an alternative for ethernet cables, do you have an any experience with that?
Alternative? Sure. Though why?
If ethernet works, you're just using a more expensive option to go with fiber.
Unless you need something unique about fiber, like distance (which can still be dubious for consumer grade hardware), or a non-electrical based signal (dubious requirement in most cases), then you're just throwing money at being able to say you use fiber.
Additionally, fiber is more fragile than a copper cable. One bad hit with a vacuum cleaner and it's toast
Maybe you shouldn't vacuum your cables?
I feel like fiber only makes sense for long runs or extremely high bandwidth needs. For a typical home network, I don't see any benefits for fiber over ethernet.
Yes. Fiber is great but extremely nuanced. SMF, MMF, UPC, APC, OM3, OM4, OS2.... All different parts of just the cabling... Not to mention the connectors, LC, SC.... You get the idea.
Everyone I tend to talk to about it seem to think multi-mode is cheaper, and it can be, but in my experience, single mode is usually the better choice and usually not much of a price uplift if you're buying from a good company. Look at FS.com and do some comparison shopping against them. They make some high quality stuff, and it's at pretty incredible pricing for what you get, but the equipment can add up fast.
Multi mode can only really carry one connection per fiber and usually needs to be duplexed (two strands per link) while single mode can leverage WDM to carry multiple independent signals on different wavelengths. This can be leveraged for bi-directional single strand links, multiple links that are aggregated into a single connection in hardware (this is how 40Gbit works, it's actually 4x10G connections on different wavelengths)....
It's still more costly and requires more specialized equipment and training to work with, compared to copper Ethernet, so it's pretty uncommon to see in residential or home networks.
YMMV. Good luck.
I wired my house with cat6 when I moved in. The overall setup looks like 10G fiber to the house -> 2.5G capable router -> 2.5G capable NAS running *arr stack. Also off the router is a single cat6 run downstairs -> 8 port 1G unmanaged switch, which is connected to my desktop, work dock, parters dock, TV, and backhaul run to the back of house wifi extender. The desktop, both docks and wifi extender are 2.5G capable. The TV is 100M. This has been extremely reliable. I plan on upgrading the switch to a 10g capable one at some point, and then the router. Since the switch is unmanaged, is there a good way to know when it is the limiting factor and I should update it?
The elevator pitch is wonderful and I'm glad to be following your recommendations already. Wired everything is not practical for me without drilling through the floor, so a mesh router with dedicated backhaul and a wired connection to the downstairs node is working like a charm.
They mentioned MoCa. If you have cable (like for the tv) you can probably use MoCa. It's fantastic.
Just read up on that, seems very interesting. I don't think it's a great option for my setup since there's only one coax port in the house, but I learned something new today.
And if you can't use MoCa - say, bc the cable installers cut all the other coax cords on the house (true story!) - you can also consider powerline adapters to send Ethernet over your electrical wiring. It's a crapshoot depending on the quality of your wiring but I can usually get at least the same speed as my wifi with it.
Awesome. That's good to hear.
I know not everyone can run Ethernet. Whether it's because you're in a rental, or you simply don't have the budget for it, the reason doesn't matter all that much. There's plenty of good reasons not to.
Usually mesh nodes have Ethernet on them as well and it just bridges into the LAN. Using that can actually cut down on wireless traffic overall. Maybe something to look at which could help if you have any troubles.
Good luck friend.
I've been switching a lot of my devices to ESP-NOW instead of WiFi so that they can just fart out their data to anyone who can hear it and then go back to sleep, no connecting or handshaking or authenticating or overhead. Should clear up my wifi network I think.
If I'm not mistaken, they still use 2.4 GHz, which is also used by wifi, Bluetooth, ZigBee, a bunch of other stuff.... Microwave ovens.....
And anything operating on a frequency, regardless of protocol, will interfere with eachother. I think the main benefit for you would be the brief amount of active time, could reduce the airtime being used by the devices.
I hope it works out for you and your wifi works excellently. Just be aware that it could still interfere. Use 5ghz when possible.
Sorry, I know there was more, but all wireless is half-duplex!? I never knew...
It's a single frequency for all people, including those that are on the same or adjacent/overlapping channels. If you ever used walkie talkies, they don't work so well when more than one person is talking.
Same idea.
Wi-Fi 7 is introducing multi link, which could improve the duplex operation, but it's far from perfect. Even if you use one channel for download and one for upload, you're still competing with everyone else on the channel - whether they're connected to your network or not. They can still interfere with you if you're on the same channel but different networks.
This is also why its generally better to turn your wifi signal power down to a low or middle power as long as all your devices can still connect.
Less range, less overlap, less competition for shared bandwidth between different access points. The more people that do it, the better the wifi gets for everyone.
The general rule I've read for wifi is to use channels 1,6 and 11 for 2.4 GHz as those do not interfere with each other. So I use a wifi scanner on my phone at the furthest point in my home from the router and check which is the least busy from the surrounding neighbors. Do you think that's a good technique to use?
For 5GHz, I try to pick between 36,48,149,161 and pick by the same rules as above. I also keep my channel size at 20Mhz for both.
There's some nuance with 5ghz, let's talk 2.4 GHz first.
You've heard correctly, 1, 6, and 11 are the "non overlapping" channels, if anyone is on, say, channel 9, then everyone on 6 and 11 are going to have a bad time. But this is entirely based on everyone using 20mhz wide channels. Anyone using 40mhz wide channels are just going to fuck up the airspace. 40mhz wide channels basically occupy two of the three non-overlapping channels on 2.4ghz. never use 40mhz wide on 2.4 GHz. IMO, it shouldn't have ever been an option.
5ghz is a UNII band, and there's three, technically four or five, main sections of the band that are relevant UNIi 1 is the low end of 5ghz, I don't have the channel numbers off the top of my head, but I know it ends at or around channel 90 or so? I'm tired and I've been ill today, so please forgive me. Some of the specifics are slipping away right now and I don't have the brain power to cross reference it. You can look all this up anyways.
UNII 1 is pretty typical, very similar to how 2.4 GHz works, just on a different band.
I'll circle back on UNII 2
UNII 3 is the high part of the band and the only nuance here is that the 5.8 GHz ISM channels overlap with a lot of this, so any consumer electronics like cordless phones that use 5.8 GHz, might cause problems with some of these channels. Use of the ISM band here has been on the decline for a while, so it's probably not an issue, but something to be mindful of.
UNII 2 is a whole thing. You'll need to look up what is allowed for your country, but some channels are off limits and this band actually interferes with radar operations, so anything operating UNII 2 channels needs to have radar avoidance built in. That's pretty much automatic, or it should be. The key take away with these channels is that you need to let the system pick the channel or will use in the band, so that it can change the channel to avoid radar if needed. Setting a static channel on your Wi-Fi in the UNII 2 band might land you in hot water.
Some 5ghz channels can only be used indoors, some can only be used in specific countries, so look it up for your situation. Wikipedia has a comprehensive article on it, and I would encourage you to familiarize yourself with it.
6ghz regulation is starting to settle down but it's looking to be a bit more open and consistent between countries which would be a nice change.
Also, there are different power restrictions on different channels, don't worry yourself too much with that since most consumer access points and Wi-Fi routers don't push enough power to exceed even the lowest restriction.
Feel free to move to 40mhz for 5ghz, there's a lot more channels and 40mhz wide can really enhance your speeds. Stick to 20 for 2.4 GHz; but don't feel limited for 5 or 6ghz.
Your methodology is good. But please understand that the graphs are an estimation, a real waterfall examination with an SDR that's capable of observing the channel would be the only way to really know what's happening in the airspace. Generally that's overkill for residential installations. Just bear in mind, those scanner apps will only show other Wi-Fi networks. Non-Wi-Fi interference will not be shown. Don't hesitate to try a different channel if one isn't working great for you. Might just be alien interference (in this context, alien means non-Wi-Fi).
Would like to ask, is it worth entering networking as a career right now? I've been of the belief that it'll be necessary as long as the internet is around, so certainly within my lifetime, but the current AI bubble and the direction it's taking is making me think otherwise.
If you can't run cables through your walls you could look into fiber that hides in plain sight https://youtu.be/Z2FbzCyiNr4
Just adding my 2p, when it comes to cabling, unless you have a specific need (or anticipate one) for a specific connection to need more than 1gbps, CAT5e is plenty good enough for 99% of domestic usage. CAT6 maybe a good idea to anticipate future demands going up dramatically on your home network but anything more is just exponentially more expensive overkill.
I always recommend Cat6, mainly because it can carry 10G up to 55m, which is basically your entire house, unless you live in a mansion or something.
10G might work on 5e, but it won't be reliable.
Even if you're not planning to go for 10G any time soon, do yourself a favor and run Cat6. In 5 or 10 years when you want 10G for any reason, you can just upgrade the equipment on both ends and it will just work.
The cost difference isn't significant enough for cat5e to make any sense for new installs.
CAT6 is so cheap you might as well get that by default now. 7/8 is where it gets expensive.
But if you can't find 6 for a good price, 5e will do everything you need it to.
It's okay to message you?
I suppose, but I usually don't check my messages on Lemmy very often, I look at my comment replies, but not my messages. I should have Matrix connected, if you use that... I have no idea if I set up Matrix right, or if I linked it correctly... I haven't looked at it since I did the setup.
I'm curious why you would want to DM rather than discuss it publicly where the information might help others?
You don't need to justify yourself to me. That question is intended for you to answer it for yourself, and if that doesn't change that you would rather do the discussion over DM, then I won't hold that against you.
Be well.
what i've done is simply lower the power of my 2.4GHz network so i have reliable coverage in my apartment, but by the time i've walked 2 floors down my phone is utterly unable to even see the network.
super simple way to avoid polluting the local airwaves, though i presume it's not really something you can do on most standard router interfaces..