Windows 2008 IPv6

Discussion in 'Server Networking' started by George, Feb 25, 2009.

  1. George

    George Guest

    I'm going through setting up a windows 2008 domain controller for the first
    time.. I put in static IPv4 addresses. When the dcpromo wizard gets to the
    DNS portion of services it says computer has dynamically assigned IP
    addresses.. I think this is because I haven't put anything in for the IPv6

    I'm not sure what to put in there?? If my IPv4 network card is statically
    assigned a subnet of and default gateway of

    Anyone know where I can go or how to assign IPv6 addresses.. Just not
    understanding that part yet..

    George, Feb 25, 2009
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  2. Un check it and don't use IPv6.

    Danny Sanders, Feb 25, 2009
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  3. Hello George,

    Two options, uncheck it on the NIC properties or fill in the correct ip addresses
    for your subnet.

    You can use this calculator to get the correct IPv6 addresses for your needs:

    BTW, with that subnet mask you have a really big broadcast domain and i think
    you don't have the need for 65534 hosts? You should try to avoid subnet's
    higher then which results in 254 hosts.

    Best regards

    Meinolf Weber
    Meinolf Weber [MVP-DS], Feb 25, 2009
  4. George

    George Guest

    so I should keep it in the 192 range or whatever??
    George, Feb 25, 2009
  5. Hello George, How many clients do you have in your environment?

    Best regards

    Meinolf Weber
    Meinolf Weber [MVP-DS], Feb 25, 2009
  6. George

    George Guest

    I have about 50 users.. 5 network printers, 4 servers.

    2 of the servers are brand new and basically replacing the other ones..

    So in the new environment I have 2 dell poweredge servers running windows
    2008 64 bit.. I also have a new dell EqualLogic storage array.. I
    building the 2008 environment from scratch..

    the 1st dell server will be the PDC the second one will be the BDC and
    database server..

    The new environment is in test mode so I can learn all of this stuff.

    so best practices and ideas on how to set this up is greatly appreciated..
    George, Feb 26, 2009
  7. Hello George,

    So 254 hosts are more then enough in the moment, what comes to
    or /24 for the subnet mask.

    Best regards

    Meinolf Weber
    Meinolf Weber [MVP-DS], Feb 26, 2009
  8. George

    Kerry Brown Guest

    Kerry Brown, Feb 26, 2009
  9. George

    George Guest

    also I have a dell powerconnect switches.. Doesn't the switch reduce

    I'm just wondering if it would matter..
    George, Feb 26, 2009
  10. George

    George Guest

    It's a powerconnect 6424 switch.. which will be trucked to a 5212..
    Servers are connected to the 6424..

    The users are on a 5212 and 3348.. (they are located in a different room
    than the servers)

    The equallogic storage array is basically on it's own network. With two
    5424 dell switches..

    My two servers have 4 network cards on each on them...
    (two go to the storage array and two go to the 6424 switch.. So the servers
    act as the interface
    between the user network and the storage network)

    My address scheme currently looks like this..

    USER NETWORK: - Users/printers/database/PDC/BDC is default gateway Watchguard Firebox x550e - 2.4 = Dell powerconnect Switches - 3.4 = Dell poweredge servers (1 PDC (DCHP, DNS,
    Print services), 1 BDC (Database, file sharing) other two will be member
    servers - 4.6 = Printers - 5.100 = Users

    STORAGE NETWORK: - Dell Equal Logic Storage Array P5000E - Switch 1 - Switch 2
    (these two switches are trunked together..)
    (two ports total go to each server) - 2.3 = Ports on Network Card.. - 3.2 = Dell Poweredge Servers (the PDC and BDC)
    George, Feb 26, 2009
  11. George

    George Guest

    thanks Kerry I read that somewhere too.. I'm not using Exchange so would it
    George, Feb 26, 2009
  12. Hello George,

    Broadcast will occur in the LAN, so the router is the border for the broadcast.

    Best regards

    Meinolf Weber

    Meinolf Weber [MVP-DS], Feb 26, 2009
  13. Hello George,

    Assuming that the servers with the 4 NIC's are DC's you should avoid this
    configuration. DC's should not be multihomed. If you're switches are capable
    of VLAN's configure your switches to separate the servers from the clients,

    Best regards

    Meinolf Weber
    Meinolf Weber [MVP-DS], Feb 26, 2009
  14. George

    George Guest

    If I separate servers via VLAN's how do the users get to the server for
    services like authentication, file sharing, etc. They would be in different

    Thanks by the way for all the answers helps in the learning process..
    George, Feb 26, 2009
  15. Meinolf Weber [MVP-DS], Feb 26, 2009
  16. George

    George Guest

    I always wondered how in the world it works though..

    Like if I have my servers in a seperate VLAN or NETWORK.. How do the users
    talk to that other network if they are in the other network?? Doing it
    without a router??

    The switch I have is a layer 3 switch so it is capable of routing..

    I'm wondering if my authentication servers are on VLAN1 how do you get users
    from VLAN2 to authenticate and use services from VLAN1..

    Thanks for your help in understanding!!
    George, Feb 26, 2009
  17. George

    Bill Grant Guest

    Routing is routing, whether you are using vlans or not.

    Hoe do you route between vlans? Exactly the same way that you route
    between physical segments. IP routing.
    Bill Grant, Feb 26, 2009
  18. George

    Kerry Brown Guest

    I don't know of any specific issues that disabling IPv6 would cause. At the
    same time I personally have never seen an issue that was caused by having it
    enabled. Here's a couple of links that talk about IPv6 in a reasonable way.

    There seems to be a lot of misconceptions about IPv6. Going forward Windows
    7 and Server 2008 R2 seem to prefer communicating, at least on the internal
    network, via IPv6. It is coming. We will have to live with it. Disabling it
    doesn't seem to fix anything even though it's often recommended as a fix.
    Given all that I leave it enabled on the networks I manage.
    Kerry Brown, Feb 26, 2009
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