A wide-open subject line, but networking is not my strong point, unfortunately.
I'm looking for some help regarding an intermittent communication failure on our z/OS 1.13 system. We use PuTTY to create a tunnelled connection to TN3270, and PCOMM to provide the 3270 emulation. When using, say, TSO, on the PCOMM panel, everything appears to be going well, until it simply... dies. I get to the point of hitting ENTER or PFnn for whatever reason, and I am presented with a the 'X clock' symbols in the status area, followed by a disconnect some short while (< 1 minute) later. At the time of that disconnect, the PuTTY connection fails also (which would be the reason for the PCOMM failure). PuTTY throws up a message box saying "Network error: Software caused connection abort" which means precisely nothing to me. >From there, it is possible to use PuTTY's 'Restart Session' option, and then PCOMM's 'Connect' option to get things moving again, until the time of the next failure. There's nothing showing up on the SYSLOG, and I can't think of anywhere else I might look for more/better info. There doesn't seem to be any pattern to the failure events in terms of time-of-day or system loading. It just ... stops. For what it's worth, z/OS system is hosted by the Dallas Innovation Center, and we've recently tried to put the system on a VPN - which is when all this trouble started. I'm trying to get SNMP working in the hope that I can get more info, but *that* is probably going to be the subject of an upcoming thread... Can anyone point me in the direction of further diagnostics at all, please? Any help would be much appreciated. Sean ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
