Tftp max file transfer size

Yes, currently it is limited to 32MB as it currently doesn't support block size negotiation. View this "Best Answer" in the replies below ». Popular Topics in Spiceworks General Support. Spiceworks Help Desk. The help desk software for IT. Track users' IT needs, easily, and with only the features you need. Learn More ». Please log in or register to answer this question. It is all explained very well in U-boot reference manual: Uboot Reference Manual For information on updating partitions with files larger than the available RAM memory, see your OS-specific update flash tool.

It first erases the target flash partition and then transfers a chunk of the image file via TFTP. It writes the chunk into the flash memory, verifies it and then continues to transfer the next chunk. The on-the-fly mechanism is disabled by default and can be enabled by setting the environment variable otf-update to yes.

On-the-fly update mechanism is automatically disabled when updating U-Boot partition to prevent partial update due to a network cut. To manually disable the mechanism, simply set the variable to no: setenv otf-update no saveenv. The maximum block size for me was negligible — I assume 0 means what ever the client requests will be allowed.

I suspect for networks with Jumbo frames enabled will be able to play with this to get a faster transfer but I have not tried with Jumbo frames. Close Menu Github. Github LinkedIn Twitter.

Tags mdt , tftp , wds.