We have a client with VMWare Workstation Pro 15 installed. Running is a SCO 5 Unix VM with 4GB of RAM and a bridged vmnet0 connection it its host which is a Windows 2016 Server using 16GB of RAM. The VM uses FacetWin which allows SMB and terminal emulator connections from the Unix VM to the Windows host. We have many clients set this way and only one has a issue loosing it's SMB connections every 2 weeks requiring a reboot of both the VM and it's host.
The NSTREAMS in Unix is how we can track when the SMB connections will break. They are set for 40,000 streams and when it gets close to this we get fails in netstat -m in UNIX. I have been using Wireshark on the Windows host which shows very frequent and continuous TCP Retransmission's/Dup ACK and it's not just traffic going to and from the UNIX VM but also network traffic going to external IPs from the Windows host. No other PC on the network has this issue.
However, as soon as we boot the UNIX VM down; all the network traffic on the host looks healthy without any TCP Dup ACKs to anywhere. I am trying to see if this is a VMWare issue or SCO UNIX. Thoughts? Thanks.
