I have a problem with FTP and Jumbo frames, and would like to hear if anybody else has experienced the same problem. The problem is that when I enables jumbo frames support the ftp transfer rate becomes very low compared with non-jumbo frames ftp transferring. The actually numbers are :
Non-jumbo frames ftp transfer rate : 16.5 MB/s. Jumbo frames ftp transfer rate : 30 kB/s.
When I do a simple drag-and-drop of a file between the 2 computers the transfer time is the same regardless of enabling jumbo frames or not. The problem isn't a switch problem, since I see the same thing using a "crossed cable".
Is there anybody there have seen the same, or is there a configuration I have forgot to setup ?.
P.S. My operating system is windows 2000, and I am using the "build-in" ftp server. The FTP client is "core FTP".