otto@tukki.jyu.fi (Otto J. Makela) (09/09/90)
Does anyone have ideas on the more esoteric details of setting up Bridge Communications' (3COM company?) CS/200's ? We have the following setup: Sun4 plus various other computers connected thru Ethernet to the CS/200, lotsa terminals connected to the CS/200. Connecting to the computers from the terminals works dandy. The problem is that the CS/200 buffers data excessively -- if you press CTRL/C from a terminal, the CS/200 will keep on sending characters for several pages, before the CTRL/C has effect. We tried setting the break character to CTRL/C and enabling clear buffer on break, but then you cannot get CTRL/C thru to the computer (the CS/200 will translate it to a Telnet break) -- emacs becomes somewhat difficult to use. If anyone has ideas (or knows where one could get some), please email. -- * * * Otto J. Makela <otto@jyu.fi> * * * * * * * * * * * * * * * * * * * * * * Phone: +358 41 613 847, BBS: +358 41 211 562 (CCITT, Bell 2400/1200/300) * * Mail: Kauppakatu 1 B 18, SF-40100 Jyvaskyla, Finland, EUROPE * * * * Computers Rule 01001111 01001011 * * * * * * * * * * * * * * * * * * *
vaillan@ireq.hydro.qc.ca (Clement Vaillancourt) (09/13/90)
In article <OTTO.90Sep9024403@tukki.jyu.fi> otto@tukki.jyu.fi (Otto J. Makela) writes: >Does anyone have ideas on the more esoteric details of setting up Bridge >Communications' (3COM company?) CS/200's ? > >We have the following setup: Sun4 plus various other computers connected >thru Ethernet to the CS/200, lotsa terminals connected to the CS/200. >Connecting to the computers from the terminals works dandy. >The problem is that the CS/200 buffers data excessively -- if you press >CTRL/C from a terminal, the CS/200 will keep on sending characters for >several pages, before the CTRL/C has effect. >We tried setting the break character to CTRL/C and enabling clear buffer on >break, but then you cannot get CTRL/C thru to the computer (the CS/200 will >translate it to a Telnet break) -- emacs becomes somewhat difficult to use. >If anyone has ideas (or knows where one could get some), please email. >-- >* * * Otto J. Makela <otto@jyu.fi> * * * * * * * * * * * * * * * * * * * * * >* Phone: +358 41 613 847, BBS: +358 41 211 562 (CCITT, Bell 2400/1200/300) * >* Mail: Kauppakatu 1 B 18, SF-40100 Jyvaskyla, Finland, EUROPE * >* * * Computers Rule 01001111 01001011 * * * * * * * * * * * * * * * * * * * Try the following setup on your terminal port, I don't have your problem. Regards, Clem. DefaultParameters for PortId !1 ...................Port Transmission and VTP Characteristics................... BUffersize = 82 DeVice = ( Terminal, Glass, DeFault ) InterAction = ( Verbose, Echo, NoMacroEcho, MacroBreak, BroadcastON, NoLFInsert ) InitMacro = "c" MaxSessions = 4 PRIvilege = User .........................Port Physical Characteristics......................... BAud = 9600 BSPad = None CRPad = None FFPad = None LFPad = None TabPad = None DataBits = 8 DUplex = Full LinePRotocol = ASynchronous PARIty = ( None ) StopBits = 1 UseDCDout = ( AlwaysAssert, NoToggle ) UseDTRin = Ignore .................Session Transmission and VTP Characteristics.................. BReakAction = ( InBand, EscDTM ) BReakChar = ^^ DIsconnectAction = None DataForward = None ECHOData = OFF ECHOMask = ( AlphaNum, CR, Punct ) ECMChar = ^^ NetAScii = UseLF FlowControlFrom = ( Xon_Xoff ) FlowControlTo = ( Xon_Xoff ) FlushVC = OFF IdleTimer = 1 LongBReakAction = IGnore LFInsertion = None MOde = Transparent XmitBinary = OFF XOFF = ^S XON = ^Q ..................Session & User Interface Editing parameters.................. ERAse = ^H LineERAse = ^U LocalEDiting = ( NoDataEditing, CmdEditing ) ReprintLine = ^R VERBatim = ^V WordERAse = ^W -- Clement Vaillancourt, | Institut de Recherche d'Hydro-Quebec Network Manager | 1800 Montee Ste-Julie, Varennes | P. Quebec, Canada, J3X 1S1 Email: vaillan@ireq.hydro.qc.ca | Tel: 514-652-8238 / Fax: 514-652-8309
peiffer@cs.umn.edu (Tim Peiffer (The Net Guy)) (09/13/90)
In article <OTTO.90Sep9024403@tukki.jyu.fi> otto@tukki.jyu.fi (Otto J. Makela) writes: >The problem is that the CS/200 buffers data excessively -- if you press >CTRL/C from a terminal, the CS/200 will keep on sending characters for >several pages, before the CTRL/C has effect. This problem is much more generic than Bridge (3Com) products. I have been able to solve this on a CS/100, but have been having problems with Cisco and Annex terminal servers. For me, this problem affects programs such as EMACS, which expects to have total control over the serial port. I think that this is silly because the program should not even need to know how to deal with I/O. If anyone can come up with better solutions than mine, I would be interested in hearing about them. The solution for the CS/100 is to set the DataForward parameter. You can set it to AlphaNum, CR, ESC, EDiting, Term, FormEf, COntrol, Punct, or all of the above. They determine when the data in the buffers are to be packetized, and subsequently forwarded. One of the DataForwarding conditions (IdleTimer) helped me figure out a reasonable solution to the Annex problem. For an Annex or AnnexII, you need to set up 2 parameters that deal with forwarding. Set the forwarding_timer to something small; I have forwarding set to 1 second. Also, you need to think about default input buffer size. The default is the smallest 256 bytes, and should be sufficient. I have control_lines set to flow_control, with start and stop characters set to ^S and ^Q respectively. Tim Peiffer -- ----------- Tim Peiffer peiffer@cs.umn.edu or Computer Science Dept ..!rutgers!umn-cs!peiffer University of Minnesota