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Extra MAC

Discussion in 'Windows Home Server' started by Patrick Whittle, Apr 8, 2009.

  1. Patrick Whittle

    Patrick Whittle Guest

    My Windows 2003 Server is assigned an IP address ten times by a DHCP server.
    The MAC address of these "extra hosts" also has 10 extra bytes tacked onto
    the end of them. Any idea of what is happening?

    Is the DHCP server doing an auto-cloning of some sort that I am not aware
    of? Thanks.
     
    Patrick Whittle, Apr 8, 2009
    #1
  3. Ryan

    Ryan Guest

    On Apr 8, 10:12 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    wrote:
    > My Windows 2003 Server is assigned an IP address ten times by a DHCP server.
    > The MAC address of these "extra hosts" also has 10 extra bytes tacked onto
    > the end of them.  Any idea of what is happening?
    >
    > Is the DHCP server doing an auto-cloning of some sort that I am not aware
    > of?  Thanks.
    >
    >  MAC_Extra.htm
    > 3KViewDownload

    I'm not positive, but this sounds like the DHCP addresses assigned to
    RAS/VPN interfaces.
     
    Ryan, Apr 8, 2009
    #2
  4. Patrick Whittle

    Patrick Whittle Guest

    What about server licensing? If a server was installed as per-seat as
    apposed to per license... will Windows Server then request ten IP addresses
    via DHCP?

    "Ryan" <ryanscripps@alumni.utexas.net> wrote in message
    news:c3777dd4-f101-443c-b541-4c63e633b2d3@z19g2000yqe.googlegroups.com...
    On Apr 8, 10:12 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    wrote:
    > My Windows 2003 Server is assigned an IP address ten times by a DHCP
    > server.
    > The MAC address of these "extra hosts" also has 10 extra bytes tacked onto
    > the end of them. Any idea of what is happening?
    >
    > Is the DHCP server doing an auto-cloning of some sort that I am not aware
    > of? Thanks.
    >
    > MAC_Extra.htm
    > 3KViewDownload

    I'm not positive, but this sounds like the DHCP addresses assigned to
    RAS/VPN interfaces.
     
    Patrick Whittle, Apr 9, 2009
    #3
  5. Ryan

    Ryan Guest

    On Apr 9, 9:03 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    wrote:
    > What about server licensing?  If a server was installed as per-seat as
    > apposed to per license... will Windows Server then request ten IP addresses
    > via DHCP?
    >
    > "Ryan" <ryanscri...@alumni.utexas.net> wrote in message
    >
    > news:c3777dd4-f101-443c-b541-4c63e633b2d3@z19g2000yqe.googlegroups.com...
    > On Apr 8, 10:12 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    > wrote:
    >
    > > My Windows 2003 Server is assigned an IP address ten times by a DHCP
    > > server.
    > > The MAC address of these "extra hosts" also has 10 extra bytes tacked onto
    > > the end of them. Any idea of what is happening?
    >
    > > Is the DHCP server doing an auto-cloning of some sort that I am not aware
    > > of? Thanks.
    >
    > > MAC_Extra.htm
    > > 3KViewDownload
    >
    > I'm not positive, but this sounds like the DHCP addresses assigned to
    > RAS/VPN interfaces.

    The licensing service does not request DHPC addresses on behalf of
    licensed computers.
     
    Ryan, Apr 9, 2009
    #4
  6. Patrick Whittle

    Patrick Whittle Guest

    But even still, after powering down the server and clearing out all IP's
    from the router... 10 more entries show up on the router every time I
    re-start the server.

    "Ryan" <ryanscripps@alumni.utexas.net> wrote in message
    news:2f0ed9d3-0199-4a9d-afe6-b8f830fa021e@z1g2000yqn.googlegroups.com...
    On Apr 9, 9:03 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    wrote:
    > What about server licensing? If a server was installed as per-seat as
    > apposed to per license... will Windows Server then request ten IP
    > addresses
    > via DHCP?
    >
    > "Ryan" <ryanscri...@alumni.utexas.net> wrote in message
    >
    > news:c3777dd4-f101-443c-b541-4c63e633b2d3@z19g2000yqe.googlegroups.com...
    > On Apr 8, 10:12 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    > wrote:
    >
    > > My Windows 2003 Server is assigned an IP address ten times by a DHCP
    > > server.
    > > The MAC address of these "extra hosts" also has 10 extra bytes tacked
    > > onto
    > > the end of them. Any idea of what is happening?
    >
    > > Is the DHCP server doing an auto-cloning of some sort that I am not
    > > aware
    > > of? Thanks.
    >
    > > MAC_Extra.htm
    > > 3KViewDownload
    >
    > I'm not positive, but this sounds like the DHCP addresses assigned to
    > RAS/VPN interfaces.

    The licensing service does not request DHPC addresses on behalf of
    licensed computers.
     
    Patrick Whittle, Apr 9, 2009
    #5
  7. Beoweolf

    Beoweolf Guest

    Like the other poster said.... its probably RAS server. Check it, go to
    services and stop it, uninstall it, configure it not to preconfigured the
    IP, configure it to use AD DHCP instead of RAS DHCP or configure it for
    static IP address.

    The point is to follow his advice and see if that stops the problem.

    From a distance - his explanation seems to fit your problem.




    "Patrick Whittle" <patrick_whittle@hotmail.com> wrote in message
    news:enzfdKSuJHA.3988@TK2MSFTNGP05.phx.gbl...
    > But even still, after powering down the server and clearing out all IP's
    > from the router... 10 more entries show up on the router every time I
    > re-start the server.
    >
    > "Ryan" <ryanscripps@alumni.utexas.net> wrote in message
    > news:2f0ed9d3-0199-4a9d-afe6-b8f830fa021e@z1g2000yqn.googlegroups.com...
    > On Apr 9, 9:03 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    > wrote:
    >> What about server licensing? If a server was installed as per-seat as
    >> apposed to per license... will Windows Server then request ten IP
    >> addresses
    >> via DHCP?
    >>
    >> "Ryan" <ryanscri...@alumni.utexas.net> wrote in message
    >>
    >> news:c3777dd4-f101-443c-b541-4c63e633b2d3@z19g2000yqe.googlegroups.com...
    >> On Apr 8, 10:12 am, "Patrick Whittle" <patrick_whit...@hotmail.com>
    >> wrote:
    >>
    >> > My Windows 2003 Server is assigned an IP address ten times by a DHCP
    >> > server.
    >> > The MAC address of these "extra hosts" also has 10 extra bytes tacked
    >> > onto
    >> > the end of them. Any idea of what is happening?
    >>
    >> > Is the DHCP server doing an auto-cloning of some sort that I am not
    >> > aware
    >> > of? Thanks.
    >>
    >> > MAC_Extra.htm
    >> > 3KViewDownload
    >>
    >> I'm not positive, but this sounds like the DHCP addresses assigned to
    >> RAS/VPN interfaces.
    >
    > The licensing service does not request DHPC addresses on behalf of
    > licensed computers.
     
    Beoweolf, Apr 9, 2009
    #6
  8. Ace Fekay [Microsoft Certified T

    Ace Fekay [Microsoft Certified T Guest

    In news:enzfdKSuJHA.3988@TK2MSFTNGP05.phx.gbl,
    Patrick Whittle <patrick_whittle@hotmail.com>, posted the following:
    > But even still, after powering down the server and clearing out all
    > IP's from the router... 10 more entries show up on the router every
    > time I re-start the server.
    >

    If RRAS is configured to use DHCP for IP distribution to RAS clients, it
    will grab blocks of 10 IPs at a time as needed. This is default. You can
    work around it by providing a static pool in RRAS properties.


    --
    Ace

    This posting is provided "AS-IS" with no warranties or guarantees and
    confers no rights.

    Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSA Messaging, MCT
    Microsoft Certified Trainer
    aceman@mvps.RemoveThisPart.org

    For urgent issues, you may want to contact Microsoft PSS directly. Please
    check http://support.microsoft.com for regional support phone numbers.
     
    Ace Fekay [Microsoft Certified T, Apr 9, 2009
    #7

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