Mountain Lion file sharing keeps stopping


Running Mountain Lion Server, but thinking this has nothing to do with the actual server app. I have shared folders set up and file sharing turned on in the but five minutes later my Mac air cannot connect across my home network. I remote login to the server, reopen the, and everything works fine for another five minutes or so. but this is happening to folders that I manually share in finder also.

On my Mac air in finder the server will totally disappear. But I have Plex server running on the Mac server and it is never interrupted to the clients around the house.

Seems simple enough but it's kicking my butt unfortunately.