I have a engineer out in the field having problems with comunications with computers out in the field. I had him send me a detail of his problems with communications. Here is his problem with the pinging between the computers.:
The server (1) is running server 2008r2, its address was 126.96.36.199,255.0.0.0.
The Siemens PC (2) (PLC) is Win XPsp3, its address is 188.8.131.52, 255.0.0.0.
My PC (3), also WinXPsp3, has an address of 184.108.40.206, 255.0.0.0.
Using the assigned numbers,
1 could ping 3, and 3 could ping 1.
2 could ping 3, and 3 could ping 2.
However, 1 could not ping 2, nor could 2 ping 1.
This is a simple network in a manufacturing environemnt with no internet; DHCP servers; AD; DNS server, ..etc. Just setup so that these few computers can communicate with each other. Can anyone see what the problem might be? I am not onsite with this PC so troubleshooting it has been a problem.