Windows Server 2003 drops network access to off sites only

Posted on 2009-12-16
Last Modified: 2012-05-08
I have a Server 2003 that is on its own subnet with about 50 pc's.  Every few weeks the server drops connection to any users that are not on the same subnet but works fine still for the users connecting to it in the same subnet.  Once i restart the server everyone is able to connect to it again.
So the server can only see the users in the same subnet and also cannot access the internet on this server.  
Question by:sccomputers

    Author Comment

    The 50 pc's are still able to access servers across the rest of the network that are different subnets, but this server will not.  Also when I am unable to access this windows server from offsites I can still access the novell server that is at the same site and plugged into the same switch.
    So I have it down to this only happening to the Windows 2003 Server.

    Author Comment

    When I pinged form the Server 2003 to a server at the main site I received a reply and now have network access and can see back to the other network from this server.
    Any clues on what would be causing this?
    LVL 11

    Accepted Solution

    What is the routing/switching device that connects the two subnets?
    The fact that the local subnet doesn't lose connectivity to the server in question sounds like a route is dropping somewhere. Rebooting the server might very well repopulate an ARP table somewhere and re-establish connectivity. If you have access to this routing device and can start a console session, it would be interesting to see what's going on during one of the down times - like, can you ping the problem server from the router?


    Author Comment

    Ok,  I will check.  Using Cisco 5505

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