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  • Help: DHCP Superscope

    Hi there,

    This is my first post so hopefully someone out there who could help me out.

    Main gateway = 192.168.1.215/24

    1 DHCP Server with 2 NIC.
    NIC1 = 192.168.1.200/24
    NIC2 = 192.168.2.200/24

    1 Router with 2 VLANs.
    VLAN1 = 192.168.1.x
    VLAN2 = 192.168.2.x

    The DHCP server was created with Superscope that encompass
    Scope1 = 192.168.1.1 - 192.168.1.50
    Option: Gateway = 192.168.1.215

    Scope2 = 192.168.2.1 - 192.168.2.50
    Option: Gateway = 192.168.2.200

    NIC1 connects to VLAN1
    NIC2 connects to VLAN2

    Question 1: Is this a good configuration to segment the network? or is there a more efficient way of doing it?

    Question 2: I could get the address assigned correctly but I could not get the Client from VLAN1 to ping Client from VLAN2. DNS can be resolve as the DNS server is on the same server with the DHCP. Is there any config that I miss out?

    Thanks for the help in advance and any other hints are greatly appreciated.

  • #2
    Re: Help: DHCP Superscope

    As for question 2, you'll need to setup a router between the two VLANs. If your DHCP server can handle it you can enable a configure RRAS on it.
    Regards,
    Jeremy

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

    Comment


    • #3
      Re: Help: DHCP Superscope

      Hi Jeremy,

      Thx for the tip. Thats what I thought too. Hence I configure the RRAS static IP route on the DHCP server.

      From NIC 2
      Destination: 192.168.1.200
      Subnet: 255.255.255.255
      Gateway: 192.168.2.200
      Metric:1

      Is this correct? I tried it already but still no ping reply. Technically it should be able to work. Any other thoughts?

      I am pinging from a client
      Client IP: 192.168.2.1/24
      Gateway: 192.168.2.200

      Comment


      • #4
        Re: Help: DHCP Superscope

        Originally posted by 2fish
        From NIC 2
        Destination: 192.168.1.200
        Subnet: 255.255.255.255
        Gateway: 192.168.2.200
        Metric:1
        You should have route entries like this:

        Destination: 192.168.1.200
        Subnet: 255.255.255.0
        Gateway: 192.168.1.200

        Destination: 192.168.2.200
        Subnet: 255.255.255.0
        Gateway: 192.168.2.200

        Scope1 = 192.168.1.1 - 192.168.1.50
        Option: Gateway = 192.168.1.215
        You'll need to change the gateway to 192.168.1.200 or if 215 is a router you'll need to add an entry like:

        Destination: 192.168.2.200
        Subnet: 255.255.255.0
        Gateway: 192.168.1.200
        Regards,
        Jeremy

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

        Comment


        • #5
          Re: Help: DHCP Superscope

          You'll need to change the gateway to 192.168.1.200 or if 215 is a router you'll need to add an entry like:

          Destination: 192.168.2.200
          Subnet: 255.255.255.0
          Gateway: 192.168.1.200
          Yep 215 is a router. Come to think of it I also need to add that in as well but will do this after I get both of the LANs to talk to one another first.

          You should have route entries like this:

          Destination: 192.168.1.200
          Subnet: 255.255.255.0
          Gateway: 192.168.1.200

          Destination: 192.168.2.200
          Subnet: 255.255.255.0
          Gateway: 192.168.2.200
          You are trying to say to create 2 static routes (TO and FRO between the 2 VLANs) is this right?
          I try to use the class c subnet but when I input the number, it would not accept the configuration. Hence I have to use the full 255.255.255.255

          Comment


          • #6
            Re: Help: DHCP Superscope

            Originally posted by 2fish
            You are trying to say to create 2 static routes (TO and FRO between the 2 VLANs) is this right?
            I try to use the class c subnet but when I input the number, it would not accept the configuration. Hence I have to use the full 255.255.255.255
            Made a mistake... it should be:

            Destination: 192.168.1.0
            Subnet: 255.255.255.0
            Gateway: 192.168.1.200

            Destination: 192.168.2.0
            Subnet: 255.255.255.0
            Gateway: 192.168.2.200
            and for the router (.215)
            Destination: 192.168.2.0
            Subnet: 255.255.255.0
            Gateway: 192.168.1.200
            Regards,
            Jeremy

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

            Comment


            • #7
              Re: Help: DHCP Superscope

              thx jeremy,

              will only be able to try this out on Monday.

              Comment

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