this post was submitted on 23 May 2025
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[–] [email protected] 127 points 2 days ago (3 children)

Can we finally get some affordable 10GbE switches too?

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

What about a cheap low power PC, like a thinkcentre, with a couple of these cards? Could double as a NAS, or is security barring that?

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

I'm not sure where security comes in for this, but that sounds like a reasonable build to me.

[–] [email protected] 1 points 1 day ago

I was thinking about the switch most people have I guess, the xDSL "box" who doubles up as a gateway and protects from intrusion and so.

[–] [email protected] 12 points 2 days ago (1 children)

what is "affordable" to you? there are $100-$300 10GbE switches out there.

[–] [email protected] 4 points 1 day ago (3 children)

I'd like something that can replace my dinky little unmanaged 16-port gigabit switch for less than $300. Right now The only things I can find in that price bracket have maybe 5 ports. I'd settle for something that can just do 2.5/5Gb on all ports.

[–] [email protected] 2 points 8 hours ago* (last edited 8 hours ago)

Yeah what I've settled on is one of those $40 generic Chinese 4x2.5G PoE+2x10G SFP+ switches. Gives me:

  • 10G for internet/router
  • 10G for my main computer
  • 2.5G for secondary machine
  • 2.5G for NAS
  • 2.5G PoE for WiFi
  • One port chained to a 16-port Gbit switch for all the slow junk that doesn't need performance

Would be great to get another 10G for the NAS as well!

[–] [email protected] 4 points 23 hours ago

Best I can do is 8x2,5 +2SFP+

The CRS310-8G+2S+IN at 250€. Good luck with configuration though

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

That'll be a while, there isn't much push yet (1gbe is still pretty fast) and you can do 2.5 if you want to push, they're basically starting to replace 1gbe with 2.5gbe as a drop in.

WiFi kind of screwed everything because it's 90-95% of all user clients, so if wifi can't handle the bandwidth, the bandwidth is considered 'commercial' and they charge you through the nose.

[–] [email protected] 3 points 1 day ago* (last edited 1 day ago) (1 children)

16x2.5gbe with a couple of 10gbe uplinks (a couple so you can either daisy chain, or connect 1 to another switch and another to a sever with 10gbe) would be amazing - that’d handle wifi on a single port and allow multiple devices to all use their full 2.5gbe

i’ve seen a couple with 5x2.5gbe and 2xSFP+, which i guesssssss is okay

[–] [email protected] 3 points 1 day ago

I have a few 4x2.5gbe and 2x10gbe, and I think one is 8x2.5 + 1x10gbe.

Theyll get better, networking is actually easy to sku once you get going, they've just enjoyed the premiums till now.

And again, wifi was considered the main connector, which is why we got 2.5gbe in the first place, it fit 802.11ac and most of ax.

[–] [email protected] 33 points 2 days ago (3 children)

Right?! Most affordable 10G switches are SFP+ which requires a lot more research to make sure you get the right modules and cabling.

[–] [email protected] 15 points 2 days ago* (last edited 2 days ago)

A lot of those modules would work fine if the companies didn't fuck with their drivers.

The Linux ixgbe driver (for Intel 82598 and 82599 chipsets) was submitted with a whitelist for Intel SFP+ adapters. Linux devs added a module option to shut off the whitelist, and tons of stuff is perfectly compatible.

[–] [email protected] 15 points 2 days ago (2 children)

Cisco c3850-12x48u is about $150 on eBay.

  • 802.3bt (60watt) PoE on all ports
  • 36x 1gig rj45 ports
  • 12x 1/2.5/5/10gig rj45 ports
  • Has a module slot that you can add 4x or 8x (8x is rare so expensive) 10gig sfp+

The main problem is the idle power consumption. About 150w with nothing plugged in.

[–] [email protected] 4 points 1 day ago

Yeah, that power consumption is a non-starter. Even assuming a relatively modest $0.15/kWh, that's ~$200/year, and just for a switch. 10GbE is nice, but I'm not convinced it's worth that much. 2.5G is plenty for a fraction of the power draw.

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

Not to mention the fans volume.

[–] [email protected] 20 points 2 days ago (2 children)

Just use DACs within the rack. Single mode fiber patches and SFP+ optics are also cheap and easy to find.

[–] [email protected] 12 points 1 day ago

DACs are great, agreed. However try telling that to the guy next door. The reason ethernet got to be so popular was because of how familiar it was and similar it us to telephone wire. There were several other competing standards befofe ethernet won.

10GbE cards and switches help regular folk upgrade without needing to learn about DACs.

[–] [email protected] 5 points 1 day ago

Always amazes me how few people seem to know about DACs. I use them extensively in racks. They're inexpensive and easy to use.