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by donatj 59 days ago
I redid the backbone of my home in 10Gb fiber, and "cheap" is not the term I would use. Especially when you can get perfectly cromulent 1GbE switches for like $10 these days.

The Mikrotik switches [1] work technically speaking but they are quite difficult to configure. You have to pull them from your network, connect physically to a specific port, force your machine onto a specific IP, connect to a specific IP. I could not get this to work in macOS nor Ubuntu despite hours of futzing with it. They both kept infuriatingly overriding my changes to the IP. I was only able to get this to work on an old Windows 10 laptop.

Once you do get their web UI up, you pray the password on the sticker on the bottom works. Neither of mine did and I had to firmware reset both and find the default password online. The web UI itself holds no hands. It's straight out of 1995, largely unstyled HTML. While using both of my devices the backend the UI talked to would crash and log me out about every five minutes. Not every five minutes after log in. Every 5 minutes wall time!

The Mikrotik switches are also fanless, and 10GbE SFP+ adapters throw off a lot of heat. If you use more than one they overheat. You can just about get away with two if you put them on opposite sides but I would not recommend it.

I've also had very mixed luck with SFP+ module compatibility with this thing. I had a number of modules that refused to run at higher than one GB, hence my fighting to get into the UI. Despite a ton of futzing between logouts I was not able to get them to work at 10Gb and returned them.

I'll be honest, my Mikrotik switches have been infuriating. I replaced one of them with a Ubiquiti Pro XG 8 8-Port 10G and holy crap the difference is night and day. It just works. Everything worked straight from the box day one, I can configure it from my phone or the web, I highly recommend this thing.

The Ubiquiti switches are multiple times more expensive but if you value your time they're well worth the price. I still have two of the Mikrotik switches on my network but am completely intent on replacing them. The Ubiquiti is worth it for online configuration alone. No need to pull the thing from your network, test your changes immediately!

1. https://mikrotik.com/product/crs305_1g_4s_in

2. https://store.ui.com/us/en/products/usw-pro-xg-8-poe

3 comments

Hah. I used a dremel tool, some radiators, and a bit of thermal glue to make my Mikrotik switch work reliably: https://pics.ealex.net/share/UxeSf_AWHLIuc-qzK5zl7JIgQvQDAZh...

It's been like this for the last 3 years. And amazingly, I still can't find a 10G switch that is just as compact.

This is the kind of quality I want and expect from a website called Hacker News.

It's way more fun to see a real solution for a problem than it is to see someone complain that the cheapest available product is lacking in finesse.

Good stuff. Are you using RouterOS or SwOS on that little guy?

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Related, here's a moneyshot of my Mikrotik Hex S that I've got in a portable rack: https://i.postimg.cc/cCJhfkv1/image.png

That very cheap gigabit copper SFP was running hotter than I'd like -- it probably would have been fine, but this rig is meant to run outside while camping off-grid in the sun in central Florida. So I put some heatsinks from my 3D printing stash on there and so far they've stayed put.

In this system, the Hex S is running OpenWRT and is configured as a PoE-powered managed switch. In that role, it switches packets and does VLAN stuff fine, and is probably a bit of overkill.

But it's also one of several layers of manual redundancy, which is important in that environment: One does not simply go to the store and buy special electronics in central Florida. So it isn't included in the travel kit, then it doesn't exist.

With one shell script, it stops being just-a-switch and becomes a router with all the usual services, plus SQM tricks and multiple WAN ports. The rig works well.

RouterOS, although I'm only using the switch-related functionality.

I found that the temperature of the 10G modules has almost no relation to their cost. So far, the least hot modules are 10G Tek ones that are also the cheapest. Mirkotik's 10G modules are more expensive, and they are also hotter.

I use mikrotik equipment extensively (as in hundreds/ thousands of them over the years), while I disagree with a lot of of this, the post is absolutely correct about the ridiculous password on a sticker requirements they introduced a few years ago. The pw text is incredibly small and the way it’s printed (dpi and font) makes it very difficult to differentiate certain characters. Also the way you initially connect to them when they’re new out of the box to then enter this obnoxious password has several issues/challenges. It used to be so easy and convenient to configure brand new mikrotik devices in the past, and now it’s become a task I dread and has even caused us to buy non- mikrotik gear in several cases.
I don't configure anything on the mikrotik. Out of the box it's a dumb switch and that is all I want.

> The Mikrotik switches are also fanless, and 10GbE SFP+ adapters throw off a lot of heat.

If you are talking about copper SFP's, then that's the problem: copper. It takes a lot of energy to drive a wire at GHz speeds, not so much with an optical link (though it's getting much better.) I have only ever felt luke warm optical and DAC SFP's. Copper 10 Gb SFP's are burning hot. I avoid using copper and run fiber.