JHL1@psuvm.psu.edu (12/04/90)
We are currently experiencing a problem with uploading text files from any Macintosh though a NetSerial. We primarily use MacTerminal 2.3.1 as our terminal emulation program when connecting to our VAX 8700. The NetSerial is connected to a 19.2 line (which we normally run at 9600). To upload a text file to the VAX in MacTerminal, you can either issue the SEND FILE command, or do the SELECT, COPY, PASTE routine. In either case, the transfer will run for a bit, but then will freeze-up. MacTerminal is now frozen. The only way to get MacTerminal back is the issue the Command-Period break command. But, although MacTerminal is usable, my connection to the VAX is still hung. The VAX still shows an active process. Here's where it gets strange. I now issue the NetSerial RELEASE command, get the message telling me that the NetSerial is disconnecting, and wait for a bout a minute until this dialog box disappears. If I now hit a few returns, I am active again on the VAX. The NetSerial does not disconnect, but seems to wake-up. I have tried MacTerminal 3.0 and MicroPhone. Although these seem to work a bit better (the transfer goes further), they will still get hung. We have increased the System heap (as suggested by Shiva), but this has not helped. We have used a data analyzer on the VAX Terminal Server to check for any possible control/flow signals, but there doesn't appear to be any causing the freeze ups. It appears that the problem resides in the AppleTalk connection between the Mac and the NetSerial. The problem also occurs on NetSerials that are connected to dial-out modems. And we have had the problem on both Phase1 and Phase2 AppleTalk networks. The NetSerial software is 3.5 (although we have tried 3.5.1 with no success) and the SYSTEM versions have ranged from 4.2 through 6.0.7. If we remove the NetSerials from any of the above situations, the problems disappear. If anyone else has seen this problem, or has a possible solution/work around, please e-mail me at JEFF@PSUPEN.PSU.EDU. We are working with Shiva on this problem, but have yet to develop a solution. I'm looking for anything we may have missed. Jeffrey H. Lynn Homer: Boy must die, Penn State College of Agriculture Boy must die! Computer Services Bart: I love you dad! JEFF@PSUPEN.PSU.EDU Homer: OO!...dirty trick.