weis@netmbx.UUCP (Dietmar Weis) (05/31/91)
... thank you and follow up question - rather long Please read and I'll summarize again. I would like to thank all those people who did response to my question related to uucico aborting after having send exactly 1 KByte, which I posted a few weeks ago. Unfortunately I didn't had the time to check out the suggestions, but I suppose I can manage it in the next days. As there were: uflorida!ki4pv!cdis-1!tanner, Organization: CompuData, Inc. uunet.UU.NET!fcsys!rab!robert, Organization: Robert A. Bullington mike.wescott@ncrcae.Columbia.NCR.COM, Organization: NCR Corp Martin Weitzel, martin@mwtech.UUCP, Organization: MIKROS Systemware Roe Peterson, roe@sobeco.com, roe@unibase.uucp Chip Rosenthal <chip@chinacat.Unicom.COM>, Organization: Unicom Systems Development, Inc. Kenneth Herron <e.ms.uky.edu!kherron> As it turned out it must be a flow control problem somewhere on the line and/or speedbuffering in the modem. Briefly: > Somewhere in the comm channel - either in a modem or upon a serial > line - XON/XOFF handshaking is enabled. > Chip Rosenthal To uflorida!ki4pv!cdis-1!tanner, Mike Wescott, Chip Rosenthal, Roe Peterson, Kenneth Herron: Indeed, all devices have xon/xoff flow control enabled, and the remote modem is connected to a DECserver200/MC. (Not mentioned in the original posting >:-( , 'coz it's so transparent :-) (The Chat script connects through the server to the Ultrix MVAX2000). I can at the server and at both modems disable xon/xoff and enable rts/cts handshake but -pls don't flame- how do I this on the SCO Box and on Ultrix? With stty -xon I disable xon/xoff at the ports, but does this imply enabling rts/cts handshake ? And: *how* could there be an rts/cts handshake over the Ethernet ? (MVAX -- Server). On the other hand: What are the side effects to the other Systems in our VAX Cluster environment, which also use the modem via LAT devices, if I disable all the way xon/xoff. (Somewhere in the docs is said, DEC local serial ports only support xon/xoff.) To Robert Bullington, Kenneth Herron I use both modems with fixed speed 2400 bps, no buffering, no MNP. This leads me to another question: Should MNP or V42 be turned off, because uucp uses its own 'g' protocol? To Martin Weitzel: I don't know of any I/O-Mapping, I only know mapkey for the keyboard. Was meinst Du damit? I would also be glad to know where to RTFM, the Ultrix Docs are quite poor, and O'Reilly I've read from the first to the last page. So, thank you very much again. Dietmar -- weis@netmbx.UUCP | Dietmar Weis DONOP CONSULT GmbH Voice: 030/884 28 54-0 | Uhlandstrasse 179/180 Fax: 030/882 55 29 | D - 1000 Berlin 12
heasif@SHUM.HUJI.AC.IL (Yehiel Greenbaum) (06/02/91)
I'm having the same problem. I'm convinced that the problem is flow control but have not managed to decide if it is the modem or the comm servire which is doing it. Once I get it working, I have to figure out how to get the same line to behave differently for normal users and uucp logins... -- Heasif - The Judaic Studies Electronic Newsletter A SAF Project - Avrum Goodblatt director, Yehiel Greenbaum, editor