8 comments

[ 3.0 ms ] story [ 26.3 ms ] thread
Super brilliant! Great work. I could have used this when a vendor sent me cables that had incompatible codes on both ends.
Thank you! I hope you all have trusted vendors, and no-one gets bent over by the sudden flood of cheap SFP28 cables :-)
Very cool! Also cool to see inside. It really is directly attached with nothing in between, I honestly wasn't expecting there to be NOTHING in the signal path.

> In a sense, it’s a revolutionary way of how to network — it separates the “what” from the “how”. To be fair: that revolution already happened over 20 years ago

How quickly we have forgotten about AUI (Attachment Unit Interface)

That was a very eye-opening post, full of very interesting details on how modern wired networks work, between NIC and the physical layer... so many mysteries about SFP black magic just falled into place in my head...
Thank you! I had to stop digging at some point, but honestly I can't wait for someone to port Doom to a ONU.
Same here!

I also enjoyed the writing style, and so went and read another article on the blog.

So... can we upgrade our existing sfp connectors to 25GBPs if our cable quality is good enough?
At least DACs work out of the box even with an Intel NIC...

I tried to do something crazy. I had a 4-port XMC 10Gb NIC in the flight computer for a balloon experiment. Two ports of which were used for 10 Gigabit links to an FPGA for data acquisition. I wanted one port to be 100-BaseFX. Turns out that it was not possible to get a compatible SFP module (ok, it's sort of crazy to use a 10 Gb NIC for a 100Mb connection, but the copper RJ45 transceivers all work fine!).