CE clients losing server connection

CE clients losing server connection

Hello i have a network with 1 server 1 supervisor 1 operator and 5 CE panels, My problem is that the CE panels lose connection with the server (Blue Dots) after around 5 minutes the run time starts.
Some times they connect again but that is not a solution.
Anyone has any idea of what might been happening, One CE panel is also running another Variable network graphic interface and doesn't have a network problem.
P.D I can ping the server by its host name with no problems.

This is a migrated post! Originally posted on 24.09.2015 by user agustinomg. Please be aware that information can be outdated.