Good morning.

I recently set up SIMH running under Linux to replace some aging VAX hardware. The SIMH instance is about 30% faster than the actual hardware, which is a nice win. I'm running the current code from GitHub, which I downloaded on Monday.

I have a dedicated Ethernet device on the Linux system for the SIMH instance.

It's in a cluster of other machines, and all is working well except for one thing. Every 15--60 seconds, it loses and re-establishes contact with the cluster:

   %CNXMAN,  lost connection to system VADER
   %CNXMAN,  re-established connection to system VADER

And these OPCOM messages from VADER:

   %%%%%%%%%%%  OPCOM  18-JUL-2018 11:33:01.26  %%%%%%%%%%%    (from node VADER 
 a)
   11:32:46.71 Node VADER (csid 00010078) lost connection to node DARTH

   %%%%%%%%%%%  OPCOM  18-JUL-2018 11:33:01.26  %%%%%%%%%%%    (from node VADER 
 a)
   11:32:49.21 Node VADER (csid 00010078) re-established connection to node 
DARTH

It recovers every time, but everything hangs briefly while connectivity is re-established, and, of course, it's generating a ton of OPCOM messages, since this happens every 15--60 seconds.

Has anyone else seen this issue or have any suggestions?

Thanks!

--
Hunter
------
Hunter Goatley, Process Software, http://www.process.com/
goathun...@goatley.com   http://hunter.goatley.com/

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