I can try it out, need to find where the only 2.5G device I have is.@zanechua It seems that the modules with the real Aquantia chipset have special capabilities for allowing the intermediate speeds of NBase-T on switches like the Brocade ICX that do not clock at those intermediate speeds. See https://forums.servethehome.com/ind...t-marvell-88x3300-v-s-aquantia-aqs-107.30004/ for a more thorough explanation. Also https://forums.servethehome.com/index.php?threads/mix-10g-2-5g-slow-speed-high-retr.33217/.
Using your HiFiber tranceiver, do you get full 2.xGbps throughput in BOTH directions between a 10Gbe endpoint and a 2.5Gbe endpoint?