So - No misinformation from my side as you claimed
I never claimed you gave misinformation.
I was asking since it was your post that outlined clearly what is and isn't possible based on actual testing you had done.
After reading your posts, I assumed you were correct and that my cables were mislabeled and/or were defective or not working right.
It turns out that
was the issue and the auction description was incorrect.
I have requested a return due to this.
P.S. Your alleged 100G AOC cable is also a QSFP+ 40G cable as the label on the transceiver says.
Fine. I get it.
The packaging and the auction description said otherwise though.
I will deal with this with the seller, and have requested a return of this item as well.
Many times an advertised speed of a cable is what the manufacturer is willing to guarantee, but the cable will go faster in reality.
Especially when the devices connected are all from the same manufacturer and that manufacturer has a proprietary faster speed.
This is seen quite often on networking products.
(e.g. proprietary WiFi speeds & protocols, also you can get often 10Gbe out of CAT5e cables)
It was reasonable to assume that with end-to-end Mellanox hardware, using an active, optical 40Gbit cable could very likely bump to 56Gbit.
Especially since your testing found that Mellanox is far less "picky" about cables when it came to Ethernet speeds.
By the way...
It's odd that you chose to assume I was accusing you of spreading misinformation, when it was more likely I was asking if you agreed that maybe my cables were defective or not working right.
Finally, there was no need for the snarky
"...as the label on the transceiver says." retort - suggesting I'm being unobservant or something.