roy@phri.UUCP (Roy Smith) (10/11/89)
We are having troubles communicating with some new machines on the
Internet in Mexico. The symptoms are that we can make ftp or telnet
connections, which seem to work initially, but soon after the connection is
made (some data point to it being after 512 bytes have been transferred,
but we're not sure about that yet) the connection hangs. How do I go about
trying to figure out what might be wrong? Some of you might remember my
asking about ping packets being duplicated; that was between us and this
same host, I don't know if the two phenomina are related.
The remote hosts we are trying to reach are 132.247.5.1 (pbr322)
and 132.247.5.2 (pt7mdv). I don't believe the host names have been
officially registered yet, but that's what we call them in our host table
(they don't seem to be in anybody's nameserver yet). We usually try to
reach them from some machine on our local network such as 128.122.136.12,
but yesterday we tried it from rocky2.rockefeller.edu (129.85.1.2) with the
same results, so I don't think the problem is at our end. The same
problems seem to occur regardless of which side initiates the connection.
--
Roy Smith, Public Health Research Institute
455 First Avenue, New York, NY 10016
{att,philabs,cmcl2,rutgers,hombre}!phri!roy -or- roy@alanine.phri.nyu.edu
"The connector is the network"CERF@A.ISI.EDU (10/13/89)
I wonder if you are running into a large packet fragmentation problem? If something is being fragmented and not reassembled along the path of routers/gateways your traffic is going, the TCP connection would get stuck. Vint Cerf