Hi Mike,
Well, you could do the following:
Enable tracing of Telnet (for example: NETSTAT OBEY TRACE TELNET),
Connect to the z/VM Telnet server and cause the disconnect,
Get the TCPIP stack console (for example: NETSTAT CP SP CONS CLOSE)
The resultant TCP/IP console should have in it msgs similar to the
following:
15:20:49 DTCOCP032I Conn 2: Transparent-mode data overruns buffer.
ToCpPos 8192,
CharsScanned 2048, hbound(...) 8192. Killing conn.
15:20:49 DTCSTM120I Killing Connection: 2
...Don't forget to turn off the trace (eg. NETSTAT OBEY NOTRACE).
Is this sufficient?
Best Regards,
Bill
The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> wrote on 02/23/2007
02:32:01 PM:
>
> Same 8K buffer here -- but since it is Friday I'll wait for our
> weekly Sunday evening IPL. Thanks!
>
> Next question: why don't we see any sort of error on the TCPIP
> console when the session is forcibly disconnected due the large
> screen size/buffer size disparity? Thus sort of thing gets REALLY
> hard to track down without messages (without even self-defining
messages).
>
> Mike Walter
> Hewitt Associates
> Any opinions expressed herein are mine alone and do not necessarily
> represent the opinions or policies of Hewitt Associates.
>
>
>
> "Fran Hensler" <[EMAIL PROTECTED]>
>
> Sent by: "The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU>
> 02/23/2007 01:18 PM
>
> Please respond to
> "The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU>
>
>
>
> To
>
> IBMVM@LISTSERV.UARK.EDU
>
> cc
>
> Subject
>
> Re: Max size 3270 screen
>
>
>
>
> Bill -
>
> You guessed right, my DATABUFFERSIZE is 8K.
>
> I won't be able to recycle TCP/IP until tomorrow.
> I'll jack up the size and let you know the results.
>
> Thanks for all the replies.
>
> /Fran
> ---------------------------------------------------------
> On Fri, 23 Feb 2007 14:02:21 -0500 William Moy said:
> >
> >The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU> wrote on
02/23/2007
> >12:50:07 PM:
> >
> >> What is the maximum size a VM 3270 screen can be?
> >>
> >> I like 66 x 160 and it works for most things in HostExplorer.
> >> But it disconnects me when I use PEEK or NAMES when I hit <Enter>.
> >>
> >> I have played with some smaller sizes but they disconnect too.
> >> I'm running z/VM 3.1.
> >>
> >> Is this a problem with z/VM or HostExplorer?
> >>
> >> /Fran Hensler at Slippery Rock University of Pennsylvania USA for 43
> >years
> >> [EMAIL PROTECTED] +1.724.738.2153
> >> "Yes, Virginia, there is a Slippery Rock"
> >
> >Hi Fran,
> >
> > In your z/VM TCP/IP configuration file (PROFILE TCPIP) what is the
value
> > of the DATABUFFERPOOLSIZE statement? If it is set to buffers that
are
> > 8K (or default to 8K), can you please try the next higher value 16K?
> > Or, whatever your setting, try the next higher one, please. When I
> > tried 90 x 160 I got the disconnect with 8K but it worked fine when I
> > went to 16K.
> >
> > There is the following usage note under DATABUFFERPOOLSIZE in the
TCP/IP
> > Planning and Customization book in chapter Configuring the TCP/IP
> > server:
> >
> > The TCP layer for Telnet uses regular data buffers only if there
are
> > no small data buffers available. The Telnet server also uses
regular
> > data buffers for internal processing, regardless of whether small
> > data buffers are available.
> >
> >Best Regards,
> >Bill Moy
> >z/VM Development
>
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