Not all CRS3xx hardware has VXLAN support in the ASIC.
CRS309 and CRS317 do.
CRS326 and CRS354 do not.
Interesting. So the 98DX82xx ASICs do VXLAN, but the 98DX32xx & 98DX83xx don't? I can't find that anywhere, and on the main PresteraDX page
Marvell seems to claim VXLAN support for the entire PresteraDX family. Where did you find that it's not that simple?