Adam ♿Mar 3

Hey @jpm, what kind of fibre and optics do I want? going to do 2-4 ~10m runs.

I am currently getting in way over my head with a 25 gigabit Mikrotik switch but this started as point to point runs.

Think future-proof, not necessarily cheap but of course some of this shit is going to come #StraightOuttaShenzen

Looks like I might have painted myself into a bit of a corner with some "cheap" SFP28 gear, too, but I'm not too attached

Show threadI love this, so IMar 3
@voltagex remind me tomorrow, but in a nutshell go for 10km 1310nm or 1550nm single-mode if it’s not too much more expensive than 850nm multi-mode. You’ll be able to find everything you need on FS.com
Show threadI love this, so IMar 4
@voltagex right, brain engaged, i think, so let's talk high-speed ethernet and the SFP family of optics.
Show threadI love this, so IMar 4
@voltagex (after picking up Little Miss 7 from school early because she fell on her face)
Show threadI love this, so IMar 4
@voltagex Ok, SFPs. Little rectangles, about THAT big, one end goes into network-related thingo, other end goes into cable
Show threadI love this, so IMar 4
@voltagex and that's about it. There's no magic to them, they just translate one signal to another. On the host-side (switch or NIC), it's a high-speed serial connection, and on the cable side it could be anything, limited only by the imagination of a SFP vendor and market demand.
Show threadkauerMar 4
@jpm @voltagex Some (all?) are full-blown computers inside those little plugs. One reason the faster ones generate so much heat. And also the way some bastard vendors restrict you to their SFPx kit, rejecting (or worse, slowing!) other vendors'. I'm looking at you, Dell.
Show threadI love this, so IMar 4
@kauer @voltagex i am seriously thinking about putting a literal RasPi class ARM system inside a SFP, eg for light branch-office network services like NTP, DHCP, DNS, or for sticking 48 of them in 1RU...
Show threadkauer
@jpm @voltagex 48? You're going to need a bigger power supply...
Mar 4 at 5:34amWeb
Show threadI love this, so IMar 4
@kauer @voltagex depends how little power i can get the SFP to draw. A full RasPi? Nope. But maybe a single ARM core, 512MB of RAM, and only the RGMII peripheral and SGMII to RGMII PHY active? Maybe...