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  • Client Network Browse Crashes Internet

    Hey,

    i am trialling the new server 2012 r2 .. and have a problem when i have connected a client to the server ... when i use file explorer or search some part of the network my connection to the internet gets reset .. is this some kind of group policy issue ie security setting that i need to change .. as i am new to server setups this is puzzling me ... if anyone can help this would be appreciated

  • #2
    Re: Client Network Browse Crashes Internet

    What do you mean when you say 'reset'. Do you lose your Internet connection?

    How is your DNS set up?

    An ipconfig /all from the server and the client would be very useful
    A recent poll suggests that 6 out of 7 dwarfs are not happy

    Comment


    • #3
      Re: Client Network Browse Crashes Internet

      Originally posted by Blood View Post
      What do you mean when you say 'reset'. Do you lose your Internet connection? YES

      How is your DNS set up? IPv4 dns/dhcp from server (192.168.1.66).... IPv6 from router (192.168.1.254)

      An ipconfig /all from the server and the client would be very useful
      SERVER 2012R2 IPCONFIG/ALL

      Windows IP Configuration
      Host Name . . . . . . . . . . . . : SERVER
      Primary Dns Suffix . . . . . . . : MAIN.HOME
      Node Type . . . . . . . . . . . . : Hybrid
      IP Routing Enabled. . . . . . . . : No
      WINS Proxy Enabled. . . . . . . . : No
      DNS Suffix Search List. . . . . . : MAIN.HOME
      Ethernet adapter Server Network:
      Connection-specific DNS Suffix . : MAIN.HOME
      Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
      Physical Address. . . . . . . . . : AC-22-0B-50-71-FF
      DHCP Enabled. . . . . . . . . . . : No
      Autoconfiguration Enabled . . . . : Yes
      IPv6 Address. . . . . . . . . . . : 2a01:348:6:8737::66(Preferred)
      IPv6 Address. . . . . . . . . . . : 2a01:348:6:8737:dd7a:948e:6fc7:558a(Preferred)
      Link-local IPv6 Address . . . . . : fe80::dd7a:948e:6fc7:558a%12(Preferred)
      IPv4 Address. . . . . . . . . . . : 192.168.1.66(Preferred)
      Subnet Mask . . . . . . . . . . . : 255.255.255.0
      Default Gateway . . . . . . . . . : 2a01:348:6:737::2
      fe80::9e97:26ff:fe79:fd6e%12
      192.168.1.254
      DHCPv6 IAID . . . . . . . . . . . : 212607499
      DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-3E-73-35-AC-22-0B-50-71-FF
      DNS Servers . . . . . . . . . . . : 2a01:348:6:8737::66
      ::1
      192.168.1.66
      127.0.0.1
      NetBIOS over Tcpip. . . . . . . . : Enabled
      Connection-specific DNS Suffix Search List :
      MAIN.HOME
      Tunnel adapter Teredo Tunneling Pseudo-Interface:
      Connection-specific DNS Suffix . :
      Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
      Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
      DHCP Enabled. . . . . . . . . . . : No
      Autoconfiguration Enabled . . . . : Yes
      IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:3c77:f9a:3f57:febd(Preferred)
      Link-local IPv6 Address . . . . . : fe80::3c77:f9a:3f57:febd%19(Preferred)
      Default Gateway . . . . . . . . . :
      DHCPv6 IAID . . . . . . . . . . . : 570425344
      DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-3E-73-35-AC-22-0B-50-71-FF
      NetBIOS over Tcpip. . . . . . . . : Disabled

      WINDOWS CLIENT IPCONFIG/ALL

      Windows IP Configuration
      Host Name . . . . . . . . . . . . : WIN81PC
      Primary Dns Suffix . . . . . . . : MAIN.HOME
      Node Type . . . . . . . . . . . . : Hybrid
      IP Routing Enabled. . . . . . . . : No
      WINS Proxy Enabled. . . . . . . . : No
      DNS Suffix Search List. . . . . . : MAIN.HOME
      Ethernet adapter Bluetooth Network Connection 2:
      Media State . . . . . . . . . . . : Media disconnected
      Connection-specific DNS Suffix . :
      Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network) #2
      Physical Address. . . . . . . . . : 00-15-83-15-A3-10
      DHCP Enabled. . . . . . . . . . . : Yes
      Autoconfiguration Enabled . . . . : Yes
      Ethernet adapter Server Network:
      Connection-specific DNS Suffix . : MAIN.HOME
      Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
      Physical Address. . . . . . . . . : 00-25-22-E6-F4-A1
      DHCP Enabled. . . . . . . . . . . : Yes
      Autoconfiguration Enabled . . . . : Yes
      Link-local IPv6 Address . . . . . : fe80::c94f:80a5:dd94:ef48%3(Preferred)
      IPv4 Address. . . . . . . . . . . : 192.168.1.102(Preferred)
      Subnet Mask . . . . . . . . . . . : 255.255.255.0
      Lease Obtained. . . . . . . . . . : 08 April 2014 17:36:39
      Lease Expires . . . . . . . . . . : 16 April 2014 17:37:29
      Default Gateway . . . . . . . . . : 2a01:348:6:737::2
      192.168.1.254
      DHCP Server . . . . . . . . . . . : 192.168.1.66
      DHCPv6 IAID . . . . . . . . . . . : 50341154
      DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-7E-0F-19-00-25-22-E6-F4-A1
      DNS Servers . . . . . . . . . . . : 192.168.1.66
      NetBIOS over Tcpip. . . . . . . . : Enabled
      Tunnel adapter isatap.MAIN.HOME:
      Media State . . . . . . . . . . . : Media disconnected
      Connection-specific DNS Suffix . :
      Description . . . . . . . . . . . : Microsoft ISATAP Adapter
      Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
      DHCP Enabled. . . . . . . . . . . : No
      Autoconfiguration Enabled . . . . : Yes

      Comment


      • #4
        Re: Client Network Browse Crashes Internet

        You wrote:
        IPv4 dns/dhcp from server (192.168.1.66).... IPv6 from router (192.168.1.254)

        IPv6 from router? Do you mean you have two DHCP servers or two DNS Servers on the network? Or, perhaps, both? I don't quite understand how this is set up.
        A recent poll suggests that 6 out of 7 dwarfs are not happy

        Comment


        • #5
          Re: Client Network Browse Crashes Internet

          Originally posted by Blood View Post
          You wrote:
          IPv4 dns/dhcp from server (192.168.1.66).... IPv6 from router (192.168.1.254)

          IPv6 from router? Do you mean you have two DHCP servers or two DNS Servers on the network? Or, perhaps, both? I don't quite understand how this is set up.
          IPv4 is all handled from server .. addresses leased from dhcp and dns configured for forward and reverse lookup from server (192.168.1.66)

          IPv6 is configured to dynamically address from within the router using a 6in4 tunnel operation

          Comment


          • #6
            Re: Client Network Browse Crashes Internet

            Are there any events in the Windows logs that give a clue what is happening when the connection is lost? Anything from the router?

            Does this happen every time you start explorer or search?



            [Edit]

            Have you tried using nslookup to verify your DNS setup?

            Open a command prompt and type:

            nslookup

            and press enter.

            You should see something similar to the following:

            Default Server: server.main.home
            Address: 192.168.1.66

            >


            Type the following after the > character and press Enter after each line:

            set q=any
            bbc.co.uk

            and it should return the IP address and name servers for the bbc.co.uk domain

            Do you get the same response from both the client and the server?

            Try it again and this time type:

            set q=any
            win81pc.main.home

            and it should return the name of your server.main.home and the IP address 192.168.1.66

            Also, when browsing/searching the network from the server do you see the same behaviour where the Internet connection is lost?
            Last edited by Blood; 9th April 2014, 09:33. Reason: extra info
            A recent poll suggests that 6 out of 7 dwarfs are not happy

            Comment


            • #7
              Re: Client Network Browse Crashes Internet

              Originally posted by Blood View Post
              Are there any events in the Windows logs that give a clue what is happening when the connection is lost? Anything from the router? no clue as all stats are reset when connection is lost

              Does this happen every time you start explorer or search? YES but only on client machine, server works perfectly fine when browsing



              [Edit]

              Have you tried using nslookup to verify your DNS setup?

              Open a command prompt and type:

              nslookup

              and press enter.

              You should see something similar to the following:

              Default Server: server.main.home
              Address: 192.168.1.66

              >


              Type the following after the > character and press Enter after each line:

              set q=any
              bbc.co.uk

              and it should return the IP address and name servers for the bbc.co.uk domain

              Do you get the same response from both the client and the server? same response from both server and client as expected

              Try it again and this time type:

              set q=any
              win81pc.main.home

              and it should return the name of your server.main.home and the IP address 192.168.1.66

              Also, when browsing/searching the network from the server do you see the same behaviour where the Internet connection is lost?
              NO server works perfectly, clients are the only ones affected by the issue

              Comment


              • #8
                Re: Client Network Browse Crashes Internet

                Disable the IPv6 DHCP server on the router and use IPv4 from the server.

                Comment


                • #9
                  Re: Client Network Browse Crashes Internet

                  I thought about suggesting that, too, but assumed the rest of the network must be using it and that, therefore, it was working as expected. It will be interesting to see if it helps.
                  A recent poll suggests that 6 out of 7 dwarfs are not happy

                  Comment


                  • #10
                    Re: Client Network Browse Crashes Internet

                    Originally posted by Blood View Post
                    I thought about suggesting that, too, but assumed the rest of the network must be using it and that, therefore, it was working as expected. It will be interesting to see if it helps.
                    IMO there is no reason not to have your server handle it.

                    Server 2012 will hand out IPv6 addresses quite happily.

                    Comment

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