TCP problem between SUNs and VAXen

[Barry Shein]

When doing remote dumps from our SUN/3 to our VAX/750 we sometimes
get a 'connection lost' message. Dumps sit there idle for quite
a while and the 750 tends to be quite loaded (also, the bus is
a lot more loaded than I like, DR11-W, Deuna, Tape, UDA50, 1 DMF32,
3 Able boards.) It's annoying because a long dump has to be restarted.
Any ideas or fixes known? (the Vax runs 4.2bsd, the SUN/3 release 3.0.)
The dumps would be traveling over the Deuna on the same ethernet as
the SUN. I suspect the VAX but don't see anything obvious, things
usually work quite well.

Thanks in advance.

	-Barry Shein, Boston University