I have a switch that supports jumbo frames (9014) and my 10 Gbe NICS support the exact same (9014).
I can ping 10.20.30.100 -f -l 8000 without a problem but my speeds tend to be slower with Jumbo Frames enabled.
I am just doing a file copy from a 2012R2 Server to a 2012R2 SMB 3.0 file share.
I use SMBmultichannelConstraint to assure that it is using the correct NIC.
I get as high as 9.3 Gbps without Jumbo Frames enabled but I only get about 7.1 Gbps WITH Jumbo Frames enabled.
Any ideas Experts?
VMwareWindows Server 2012Switches / HubsNetworkingRouters
You may want to experiment, with the size you have defined, e.g. try an MTU of 4000 or 8000, rather than 9014.
Jumbo Frames are frames which are larger than 1500.
Also you may find that the bottle neck could be elsewhere, or you are not full optimizing the link.