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How To configure 2 VLAN sharing only ADSL connection

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  • How To configure 2 VLAN sharing only ADSL connection

    Hi, everyone could give me any tips?

    What I need:
    I need to install a new SBS2011 server in my LAN using the same local domain (I like it too much) of the old SBS2003 still running.
    I cannot use the migration process due to a failure on exchange migration task.
    I have not enough time to complete the migration in a short time, so I need the 2 server on line untill I terminate all the task without haste.
    So I would try to configure 2 separate VLAN sharing only the ADSL connection
    --------------
    Actual scenario:
    1 ADSL with dinamic IP,
    1 phisical LAN, 192.168.0.x
    1 Modem-Router TP-Link TD-8840T (it support VLAN): 192.168.0.138-255.255.255.0
    1 Switch ( no problem to add more swith)
    1 SBS 2003 Server: 192.168.0.111 - 255.255.255.0
    -------------------------
    I just tested this configuration without change the router setting (VLAN disabled):
    Gateway: 192.168.0.138 Subnet 255.255.0.0
    SBS2003: 192.168.0.111 - 255.255.255.0
    SBS2011: 192.168.1.100 - 255.255.0.0
    Result: ADSL Sharing OK - LAN Isolation KO (the two servers see each other)
    -------------------------
    So I'm planning to configure 2 separate VLAN , but I am new to this argument.
    Have anyone any tips or step-by-step instructions
    Thanks in advance
    Luc

  • #2
    Re: How To configure 2 VLAN sharing only ADSL connection

    TEST n.2:
    -------------
    Gateway: 192.168.0.138 - 255.255.0.0
    VLAN1-SBS2003: 192.168.0.111 - 255.255.255.0
    VLAN2-SBS2011: 192.168.1.100 - 255.255.255.0
    -------------
    Router VLAN setting
    VLAN: active
    Group-Active-ID-VLAN Group Ports - VLAN Tagged Ports
    1-Yes-1-e4,e2,e1,p0,p1,p2,p3,p4,p5,p6,p7-none
    2-Yes-2-e3,p0,p1,p2,p3,p4,p5,p6,p7-none

    RESULT: VLAN ISOLATION OK - VLAN1 Internet OK - VLAN2 Internet KO
    ping 192.168.0.138: VLAN1: OK - VLAN2: KO
    ping 8.8.8.8 : VLAN1: OK - VLAN2: KO
    =================================================

    Comment


    • #3
      Re: How To configure 2 VLAN sharing only ADSL connection

      so.. what exactly are you trying to acheive by installing an SBS2011 server, into an existing SBS2003 domain ?

      (or more so, giving it the same domain name?)

      even if you get your VLANs working, it's only going to be a clustrfk..
      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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      • #4
        Re: How To configure 2 VLAN sharing only ADSL connection

        My goal is to maintain long-established habits, no relation to technical issues.
        We like the domain name, that's all.

        It is also an opportunity to reorganize the AD tree, rules ad users in a non-traumatic way.
        I will migrate the users a little at a time on the new system and finally shut up the old branch
        Last edited by luc; 27th May 2011, 12:37.

        Comment


        • #5
          Re: How To configure 2 VLAN sharing only ADSL connection

          well.. why not use a separate subnet, instead of vlanning ?
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          • #6
            Re: How To configure 2 VLAN sharing only ADSL connection

            Originally posted by tehcamel View Post
            well.. why not use a separate subnet, instead of vlanning ?
            it was my first configuration (VLAN disabled):
            Gateway: 192.168.0.138 Subnet 255.255.0.0
            SBS2003: 192.168.0.111 - 255.255.255.0
            SBS2011: 192.168.1.100 - 255.255.255.0
            Result: ADSL Sharing OK - LAN Isolation KO (the two servers see each other)
            ------
            If a use the subnet 255.255.255.0 for the gateway the sbs2011 cannot connect to it.
            --------------------------

            Comment


            • #7
              Re: How To configure 2 VLAN sharing only ADSL connection

              Well, no, you will not be able to reach a gateway of 192.168.1.X if you are on a 192.168.0.x subnet.

              That's the whole point of a gateway, it routes to another network.

              What you could _Try_ doing is changing the mask on the second subnet to 255.255.0.0 instead of 255.255.255.0

              may not work though..
              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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              • #8
                Re: How To configure 2 VLAN sharing only ADSL connection

                Originally posted by tehcamel View Post
                Well, no, you will not be able to reach a gateway of 192.168.1.X if you are on a 192.168.0.x subnet.

                That's the whole point of a gateway, it routes to another network.

                What you could _Try_ doing is changing the mask on the second subnet to 255.255.0.0 instead of 255.255.255.0

                may not work though..
                I'm able to ping the gateway on 192.168.0.138 from 192.168.1.100 (the gateway subnet is 255.255.0.0), but cannot exit on internet.

                Comment


                • #9
                  Re: How To configure 2 VLAN sharing only ADSL connection

                  Then maybe the router is only configured to NAT the 192.168.1.x subnet.. ?
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