[ECOS] Problem TFTPing from redboot

Douglas Bush dbush@extremeeng.com
Wed Feb 13 14:24:00 GMT 2002


Umm... My problem is that I'm trying to UPLOAD to the target.  Right
now, I'm dead in the water.  I can't upgrade my board.

Also, this is several server programs which exhibit this problem.

-----Original Message-----
From: ecos-discuss-owner@sources.redhat.com
[mailto:ecos-discuss-owner@sources.redhat.com] On Behalf Of Gary Thomas
Sent: Wednesday, February 13, 2002 3:12 PM
To: Pieter Truter
Cc: eCos Discussion List
Subject: RE: [ECOS] Problem TFTPing from redboot

On Wed, 2002-02-13 at 15:01, Pieter Truter wrote:
> 
> We had the same problem with a windows TFTP server. It requires that
the
> "OCTET" be lowercase. You need to modify RedBoot's TFTP code. Replace
all
> "OCTET" with "octet" in tftp_client.c
> 

Except that the RFC for TFTP specifies upper case.

Go Micro$oft!

> 
> -----Original Message-----
> From: Douglas Bush [mailto:dbush@extremeeng.com]
> Sent: Wednesday, February 13, 2002 12:58 PM
> To: eCos Discussion List
> Subject: [ECOS] Problem TFTPing from redboot 
> 
> 
> Folks,
> 
> I can't seem to TFTP load an image into an EDB7211.  I'm using Windows
> 2000, and the redboot which is already installed on my target is the
> standard (canned) redboot from May 2001.
> 
> I start up my server application, then type;
> load -h 172.16.1.15 -m tftp redboot.srec
> 
> The on target redboot responds with;
> Can't load 'redboot.srec': operation timed out
> 
> I've tried 2 3Com tftp servers, and TFTPD32.  I've also tried to
> increase the timeouts on the servers.
> 
> Ethereal shows what appears to be a valid TFTP request, but its not
> being accepted by any of the TFTP servers.
> 
> TFTPD32 said "Error: RecvFrom returns 10040: <A message sent on a
> datagram was larger than the internal message buffer or some other
> network limit, or the buffer used to receive a datagram into was
smaller
> than the datagram itself."
> 
> I suspected my windows MTU size so I tried pinging with 1472 byte
> packets with no fragmentation and that worked just fine.
> 
> Does anyone have any experience with this?  Also... What is everyone
> else using for a TFTP server for either cygwin or Windows 2000?
> 
> Douglas Bush
> Extreme Engineering
> #17, 6025 - 12 St. SE
> Calgary, Alberta, Canada
> T2H 2K1
> 
> Phone: 403 640 9494 ext-208
> Fax: 403 640 9599
> 
> http://www.extremeeng.com
> 
> 
> 
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