Why loses connection windows server 2016 and centos 7?

Question

Ping

Hello. The problem is the following.
There are two servers:
1. ws 2016
2. centos 7
The connection between them randomly disappears. ping host -t is cured. After some time, the connection is restored in this way. Most likely it is still being treated by disabling / enabling the network card, but have not tried it. Many users work in the terminal.
There are still a lot of users on the network who have no problems with accessibility. Communication between these servers disappears.
They are on the same network. connected to the same switch.
Tell me, what could be the matter? Where to dig?

Answer 1

At the time of the connection failure, look at the lists of MAC addresses in the cache of both hosts, and compare with the actual MAC addresses on the hosts themselves. Does any left poppy suddenly appear in the caches in relation to the IP of these hosts.