Hanging FTP sessions


John Sambrook (tikal!sigma!uw-nsr!john@beaver.cs.washington.edu)
25 Aug 88 16:46:41 GMT


I've run into a problem with ftp(1) and would appreciate some advice.

I would like to move some files via anonymous FTP from one system to
another. The systems in questions are Data General MV/10000 systems
running DG/UX 3.11 and DG/UX TCP/IP 2.02.

I am, of course, able to login to the remote system as user "anonymous",
password "guest". If I then do an "ls" command I get a listing of the
three directories (bin, etc, pub) in ~ftp, as I expect. So far, nothing
unusual.

Now, if I try to get a long list, with "ls -l", the connection seems to
hang. Believe me, I have waited for periods of thirty minutes but have
never gotten past this hang condition. I have the same problem if I
try to copy the files I want from ~ftp/pub. The connection is established
as expected, with the "PORT" and "Opening data connection" messages
printed on our end, but no data ever flows. I have hash mark printing
on.

I have tried several different systems locally (including VMS, AOS/VS,
4.3BSD) to fetch the files but I still have the hang condition.

I don't know if it is related, but when I do "stat" on our local ftp(1)
system it prints the page size of both "ftp-user" and "ftp-daemon" as
2048 bytes. Is it possible that this is too long and that some type of
fragmentation is occuring?

Sorry I can't be more concrete; I don't have a lot of experience
debugging TCP/IP problems, and even fewer tools for doing so.

Please feel free to send mail; I'll post a summary of responses. If
you would rather post a response that's fine too, though I doubt many
other people have this problem.

Thank you very much,

John Sambrook Internet: john@nsr.bioeng.washington.edu
University of Washington RC-05 UUCP: uw-nsr!john
Seattle, Washington 98195 Dial: (206) 548-4386

--
John Sambrook			     Internet: john@nsr.bioeng.washington.edu
University of Washington RC-05		 UUCP: uw-nsr!john
Seattle, Washington  98195		 Dial: (206) 548-4386



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