2.5g capable SFP+ switch or media converters

Submitted ⁨⁨1⁩ ⁨year⁩ ago⁩ by ⁨fuckwit_mcbumcrumble@lemmy.world⁩ to ⁨selfhosted@lemmy.world⁩

Is anyone aware of any switches (or media converters) with SFP+ ports capable of negotiating 2.5Gbit speeds that don’t cost an arm and a leg?

I have the Google Fiber 2 gig plan and I’d like to get rid of the fiber box since they’ve been extremely unreliable and our 4th one has just died. Unfortunately in order to get the full speeds I need something that can take a 2.5 gig SFP+ connection. 10 gig will not work, and 1 gig obviously only gets me half the speed.

I’ve found a few Unifi compatible switches, but they’re between $600 and $900 which is just insane for all we need.

Media converter wise everything I’ve found is 2.5gig on the rj45 side and 10 gig only on the SFP.

Something has to exist out there right? It can’t only be Google who are the freaks using 2.5 gig SFP modules.

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randombullet@lemmy.world ⁨1⁩ ⁨year⁩ ago
I use a mikrotik RB5009 for my 2.5gb routing. It technically can hit 10gbps via routing.

Switching you can try mikrotik.com/product/crs305_1g_4s_in

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peregus@lemmy.world ⁨1⁩ ⁨year⁩ ago
Have a look at the Mikrotik switches (the ones that can run routerOS like the CSS610-8P-2S+IN). I don’t know much about fiber and up to now I didn’t even know that the 10Gbps SFP+ transceivers couldn’t work at 2.5Gbps, but have a look at the Optcore Sober transceivers. I’ve just found them doing a rapid searche, I don’t know them.

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ostsjoe@lemmy.world ⁨1⁩ ⁨year⁩ ago
I have no way to test this with the equipment I have, but what about opnsense on an x86-64 box and throw an sfp+ pcie card in there. You could then in theory turn off auto negotiation and set it to 2.5g. Has anyone out there tried this?

I’ve been running opnsense with my CenturyLink 1g setup, though I’m still using their ont to convert to copper, and been very happy with it.

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- fuckwit_mcbumcrumble@lemmy.world ⁨1⁩ ⁨year⁩ ago
  You’d need a card capable of 2.5 gig and I haven’t been able to find one of those either.
  
  My friend did find these which should work. I think I have a spare 2.5 gig nic somewhere that I could install into my server. I’ll have to do pcie pass through straight to pfsense since ESXi doesn’t support this el cheapo consumer grade nic. But it should work.
  
  www.amazon.com/dp/B0C4JKSFW6
  
  www.amazon.com/dp/B0C871SQVQ
  
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  - SteveTech@programming.dev ⁨1⁩ ⁨year⁩ ago
    This guy managed to modify a Broadcom NIC to support 2.5G SFP: github.com/Berzerker/google-fiber-2gbps-bypass
    
    I mean it isn’t great to have to mod something, but at least it’s something.
    
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scrubbles@poptalk.scrubbles.tech ⁨1⁩ ⁨year⁩ ago
Be wary of the unifi ones. I just got the Unifi enterprise 8-poe and the SFP overheats constantly. There’s a bug in the firmware where the fan doesn’t kick on, from the forums I read it’s because “users don’t like fan noise”, but uh, I also don’t like my switch crashing and freezing to where I have to do a full power cycle to get it back on. If you go unifi read reviews first, get something with active cooling.

If it’s just on the first bit of your network, could you do a pfsense/opensense box with a 2.5gig card? Then everything after that could be whatever you need

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