Network Connectivity Problem
We currently are having problems in a classroom with 10 wired PC's which all run a specific music program namely Sibelius. For the program to run the client machines have to access the Sibelius network server as we have a 10 concurrent user licence. The problem has arisen that 3 of these machines have stopped working specifically when it comes to running this program. Now after chasing around looking at server settings for Sibelius and checking that the clients are trying to connect to the correct server it seems that we have come across a connectivity issue. The client machines cannot ping the sibelius server although they can ping all other servers and specific other client machines that I've tested. From the sibelius server I have tried pinging the 3 client machines and yet again the ping fails with no connection even though the server does get a reply from the other machines and other servers. We are operating on one subnet and the default VLAN for these machines. Routing is via a switch in the music room cabinet and then via the main switch back to the server room. The clients are all running Windows 7 enterprise version with no internal firewalls and the sibelius server is running 2008 R2. Slightly puzzled as have tried the usual of rebooting all clients and pinging IP addresses as opposed to their DNS names and also flushing DNS from the clients and server, no change and now slightly puzzled. Any thoughts would be welcome.