[syslinux] blocksize and tsize at TFTP transfer

[Geert Stappers]

Op 20090530 om 19:07 schreef Philippe Auphelle:
> pxelinux sends tsize followed by blocksize, tsize is not recognized
> and the TFTP server ignores the options and replies with the data
> packet as RFC 2347 "TFTP option Extension" allows: "If a server
> implementation does not support option negotiation, it will likely
> ignore any option appended to the client's request. In this case, the
> server will return a DATA packet for a Read Request transfer (...)
> establishing normal data transfer."
> And the client must be designed to handle this behavior.


The previous provided packet capture file (  ".pcap", "tcpdump file" )
shows that pxelinux behaves that way for the file pxelinux.cfg/default.

I wonder what behaviour is shown when  pxelinux.cfg/default is 
larger then 512bytes ( default TFTP blockssize) or/and
larger then 1456bytes ( large TFTP blocksize)


Stappers