Ethereal-dev: [Ethereal-dev] More questions about the Cisco phone

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From: jonathan <jonathan@xxxxxxxxxxxxxxx>
Date: Wed, 27 Dec 2000 23:53:25 +0800 (GMT-8)
> 
> Ethereal, as modified by the patch I sent out, doesn't show any TFTP
> options in packet 45; instead, it shows a
> 
> 	[Short Frame: TFTP]
> 
> indication, as it should.
> 

Thanks for the patch. I tried it out and got the same results. A couple of
questions - if the frames are badly formed, what does that mean? And more
importantly, how can I remedy the situation ?

   I have some problems again with the format specified by RFC 1350 and
the tftp output results that ethereal is giving me. This time it is with
the data packet. The format for the data packet is :


          2 bytes    2 bytes       n bytes
          ---------------------------------
   DATA  | 03    |   Block #  |    Data    |
          --------------------------------

However, the results from the ethereal trace indicate that this is not the
format of the IP phone tftp packets. 

Please do take a look at : http://www.comp.nus.edu.sg/~jonathan/ethereal/

I have screendumps and more detailed information there.

Thanks again


jonathan