On Oct 31, 2007, at 10:31 AM, Zoltan Forray/AC/VCU wrote:

...
10/29/2007 06:19:16 ANS1809W A session with the TSM server has been
disconnected. An attempt will be made to reestablish the connection.
10/29/2007 08:27:12 SendSchedResult: Received rc: -50 trying to
receive
ConfirmResp verb ...

Zoltan -

This seems to be the result of the site network problems, which need
to be resolved for TSM to reliably initiate sessions.

In a long-running backup, the IDLETimeout results in the Producer
session being terminated.  It's the "envelope" session for the
backup, and its temporary demise is okay, as at the end of the backup
it will be reanimated to send the summary statistics to the server.
This is presented in Technote 1161949.  Something in your site
networking seems to be preventing that final session from occurring.
Unfortunately, the messages fail to provide details about the
attempted connections, where this might be the result of odd DNS
lookup values such that the IP address which the client is attempting
to connect is no longer actually the TSM server (depending upon how
your client is actually programmed).

  Richard Sims