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  • no connectivty on the second VM

    The Host is 2008 R2 64bit server. I have two 2008 r2 clients on the host. Static IP is configured on both the host and the clients. I can't ping one of the clients from the network and no internet access. If I turn off the other VM, the second client works and vice versa. Windows firewall is turned off on both the host and the clients.

  • #2
    Re: no connectivty on the second VM

    IPCONFIG/ALL from host and both clients, please

    Since I assume you are using hyperV, have you checked the option to do something to the MAC address in networking settings
    Tom Jones
    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
    PhD, MSc, FIAP, MIITT
    IT Trainer / Consultant
    Ossian Ltd
    Scotland

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

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    • #3
      Re: no connectivty on the second VM (hyper-V)

      IP config /all
      from the host
      Host Name RFMSS-VIRBOX2
      Physical Address 00-13-72-69-27-FD
      DHCP Enabled: No
      Autoconfiguration Enabled: Yes
      IPv4 Address 10.200.0.216
      Subnet Mask 255.255.255.0
      Default Gateway 10.200.0.1
      DNS Servers 163.252.98.37
      163.252.31.2
      NetBIOS over Tcpip: Enabled

      IP config /all from client 1:
      Host Name RFMSS-217-001
      Physical Address 00-15-5D-70-79-1B
      DCHP Enabled: No
      Autoconfiguration Enabled: Yes
      IPv4 Addressss 10.200.0.217
      Subnet Mask 255.255.255.0
      Default Gateway 10.200.0.1
      DNS Servers 163.252.98.37
      163.252.31.2
      NetBIOS over Tcpip: Enabled

      IP config /all from client 2:
      Host Name RFMSS-209-001
      Physical Address 00-15-5D-70-79-1C
      DCHP Enabled: No
      Autoconfiguration Enabled: Yes
      IPv4 Addressss 10.200.0.209
      Subnet Mask 255.255.255.0
      Default Gateway 10.200.0.1
      DNS Servers 163.252.98.37
      163.252.31.2
      NetBIOS over Tcpip: Enabled

      You mentioned something about the option to do something to the MAC address in networking settings. I have not done anything but I am willing to try your recommendation. Just for your info, the vhd was imported from a working vm from another server.

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      • #4
        Re: no connectivty on the second VM

        you mention that when both nodes are running, you can only elicit a respons from one of them over the network.

        so, another step:
        when both are running, can they ping each other ?
        can the VM Host ping both of them ?
        is there maybe something on your switches, MAC security that only allows a certain unmber of MAC addresses ?
        Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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        • #5
          Re: no connectivty on the second VM

          In addition to tehcamel's suggestions, in the VM settings check to see if it is connected to the proper network and verify the VLAN settings are correct. You could also try recreating the vswitch.
          Regards,
          Jeremy

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

          Comment


          • #6
            Re: no connectivty on the second VM

            Thank you both for your response.

            JermyW,

            All the network & the VLAN settings are correct. And I have reacreated the vsswitch several times.

            tehcamel,

            The clients cannot ping each other

            The host can only ping the one with internet access. Now if I turn off the working client, then the other VM can be pinged and have internet access.

            I don't see any MAC security that only allows a certain unmber of MAC addresses.

            I don't really know what to think because I have tried to get this working at least for a couple of weeks now.

            Comment


            • #7
              Re: no connectivty on the second VM

              How about recreating the VM?

              Keep the VHD's but just connect them to newly configured VM's. You'll have to reconfigure the NIC settings in the guest OSes.

              If that doesn't work, backup the VHDs and rebuild the Hyper-V server.
              Regards,
              Jeremy

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

              Comment


              • #8
                Re: no connectivty on the second VM

                JermyW,

                I have recreated the VM a few times. Same issue. What do you mean when you say reconfigure the NIC settings in the guest Oses?

                Thanks~

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                • #9
                  Re: no connectivty on the second VM

                  When you create a new VM it's like taking a hard drive out of one server and putting it in another. It sees the NICs as new hardware and so you then need to configure the IP addressing again.

                  If you've already recreated the VMs (not import them) then I think the next step is to backup the VHDs and rebuild the Hyper-V host.
                  Regards,
                  Jeremy

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

                  Comment


                  • #10
                    Re: no connectivty on the second VM

                    I understand. I have configured the NiC with a new IP address. I will take your suggestion as a last resort.

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