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  • Network connection intermittent

    Scenario:
    windows 2000 server sp4 on IBM Netfinity 5500 M20
    two stacked switches that connects about 20 workstations.
    Windows 2000 is Active Directory Domain Controller. DNS, DHCP and Wins are actice.

    Windows 98 workstations have no problems
    Windows 2000 workstations have no problems
    Winsows XP SP1 workstations have no problems
    Windows XP SP1 upgraded to SP1 workstations have no problems
    New Windows XP SP2 have the following problem.

    The connection to the server has no problem but after few minutes the connection fails. Cannot print, cannot save files on share.
    Ping server ip address fails.
    Ping server name fails (but name is resolved)
    Internet navigation works fine.

    I ping another workstation on the network (it works) and server connection is newly available.

    I read lot of newsgroup but I cannot find any help.
    On Microsoft websyte I cannot find any help.

    May anyone help me?

    Thanks in advance

    Andrea Ventura
    [email protected]

  • #2
    Re: Network connection intermittent

    Have you disabled the windows firewall??

    Comment


    • #3
      Re: Network connection intermittent

      Yes with or without windows firewall I have the same problem.

      Additional information:
      When Windows XP SP2 workstations loose connection to the server, they continue to navigate to internet.
      Other workstations work fine with server.
      I suppose the problem is not on the server but on workstations but I don't khow wich is it.

      Comment


      • #4
        Re: Network connection intermittent

        Have you checked the cables?

        One the new XP machine, when you lose your connection run ipconfig see what it displays. If it says something like "media disconnected" it's probably a hardware issue i.e. NIC, cables, and/or switch. But the bad news is that if it show up normal it could still be a hardware issue.
        Regards,
        Jeremy

        Network Consultant/Engineer
        Baltimore - Washington area and beyond
        www.gma-cpa.com

        Comment


        • #5
          Re: Network connection intermittent

          I had similar problem in the past. Try changing port in switch (switch port with any windows xp sp1 which is working OK).
          Arber I. Ibrahimi

          Comment


          • #6
            Re: Network connection intermittent

            ipconfig don't show cable disconnected.
            When I cannot reach server I can use internet.
            Before submit this post I have also tried to change switch port with another working
            and to change switch (I have two), but no success.

            Comment


            • #7
              Re: Network connection intermittent

              I would replace the NIC and also the CAT5 cable. This narrows it down to a problem with the OS as you have already changed the port on the switch.

              Michael
              Michael Armstrong
              www.m80arm.co.uk
              MCITP: EA, MCTS, MCSE 2003, MCSA 2003: Messaging, CCA, VCP 3.5, 4, 5, VCAP5-DCD, VCAP5-DCA, ITIL, MCP, PGP Certified Technician

              ** Remember to give credit where credit is due and leave reputation points sigpic where appropriate **

              Comment


              • #8
                Re: Network connection intermittent

                Have you installed the latest drivers??

                Comment


                • #9
                  Re: Network connection intermittent

                  Yes, I've installed latest driver, changed network patch cable and network connector.

                  I've tried all ... I think.

                  Comment


                  • #10
                    Re: Network connection intermittent

                    What kind of NIC do you use. I had problem in past with integrated GBIT NIC (2 types of asus mainbords, i dont remember which models). I changed switch type and problem was solved. Try using another type switch just for test.
                    Arber I. Ibrahimi

                    Comment


                    • #11
                      Re: Network connection intermittent

                      Originally posted by aventurait
                      When I cannot reach server I can use internet.
                      Um, I think we need to get back to troubleshooting the configuration. I don't think it's hardware because you say that you can still connect to the Internet when you cannot reach the server and all the other clients don't have any trouble.
                      Regards,
                      Jeremy

                      Network Consultant/Engineer
                      Baltimore - Washington area and beyond
                      www.gma-cpa.com

                      Comment

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