From: Andrew Larkins (andrew.larkins@BTGroup.co.za)
Date: Thu Jan 18 2007 - 11:04:23 ART
Hi all,
I am posting this because I can not find a valid answer. I am aware that tha
maximum file transfer size for TFTP is 16MB. I have lab'ed this on numberous
times and always I get a protocol error when I reach this limit.
I am on site right now doing a cutover (Enterasysout and 6509 in) and had to
convert the CatOS to IOS on a SUP720 - CatOS8.5.6.
I can FTP all the images from the switch and MSFC to the FTP server. FTP
access to the server is perfect from all devices. However when I try FTP a new
image onto the disk0: it fails. Yes the disk is formatted. The FTP server
shows the file access attempt, but then everything dies - consoles are dead -
I tried this on 2 different SUPs. I have to reboot the 6509 chassis to get
console again. I can however FTP any small image - less than a 9MB up to the
systems successfully. I sent the PIX firewall 7.22 code as a test.
I even logged a TAC case with this. Ths short answer from TAC was to use
TFTPD32 which I did. I queried the file size anyhow and the TFTP limits. What
happened next confussed me. I successfully sent a 45MB file via TFTP to the
disk0: and also to bootflash:
This should not have worked.
Anyway - after the conversion to IOS was complete, I tried FTP again and
everything works.
Can anyone explain why this worked? Is this a bug or is this TFTPD32 program
somehow breaking TFTP to support this larger file size? I did not try TFTP
after that again since it should never have worked at all in the 1st place
Regards
Andrew
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