[svlug] Linux Terminal Server (LTSP) problem : workstation could not find TFTP file

Rob Walker rob at myinternetplace.net
Tue Aug 27 07:38:38 PDT 2002


On Mon, 2002-08-26 at 22:23, Stephen Liu wrote:
> At 10:08 AM 8/26/2002 -0600, Rob Walker wrote:
> >tcpdump -ni eth0 -s 0 -w output.file
> >
> >Then email me the output.file after it gets done failing a couple of
> >times.
> 
> # tcpdump -i any -l -s0 udp port 69 | tee tftp.log
> tcpdump: listening on any
> 
> 11:18:31.638793 192.168.0.101.2001 > server.ltsp.tftp:  38 RRQ 
> "/tftpboot/kernel    "
> 11:18:37.075369 192.168.0.101.2002 > server.ltsp.tftp:  38 RRQ 
> "/tftpboot/kernel    "
> 11:18:42.073408 192.168.0.101.2003 > server.ltsp.tftp:  38 RRQ 
> "/tftpboot/kernel    "
> 11:18:47.071370 192.168.0.101.2004 > server.ltsp.tftp:  38 RRQ 
> "/tftpboot/kernel    "
> 11:18:52.069440 192.168.0.101.2005 > server.ltsp.tftp:  38 RRQ 
> "/tftpboot/kernel    "
> 11:18:57.067325 192.168.0.101.2006 > server.ltsp.tftp:  38 RRQ 
> "/tftpboot/kernel

ok, we see that the client is asking for something which begins with
"/tftpboot/kernel"  Is that the entire request?  I don't know.  I fear
tcpdump is truncating the output here for us to read, or there is
something which isn't being shown in the four spaces between the 'l' and
the '"' characters.  

What did ethereal say about the tftp requests when you loaded up the
file that I said to save with the "-w" command?

rob





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