Windows 2003 - setting a secondary IP with netmask /32 (255.255.255.255)

Discussion in 'Server Networking' started by msnews.microsoft.com, Nov 6, 2006.

  1. Hi,

    I have some servers in different datacenters. Those use standard public
    IP's with a standard gateway,...

    Now, i've requested a secondary public IP from my ISP, and i've received an
    IP with a subnet mask /32, directly routed to the primary address of the
    server. It's working on a linux server, but with Windows i cannot define a
    subnet mask 255.255.255.255, the smallest i can define is a /30,
    255.255.255.252, wich of course does not work as it should (i'm unable to
    reach neighboor IP's as the server think those are in the same subnet).

    Can someone tell me how i need to configure a Windows 2003 server to handle
    a /32 IP ?

    I've tryed using the graphic interface (of course), using netsh and manualy
    modifying the registry, but no success...

    Any help would be appreciated :)
     
    msnews.microsoft.com, Nov 6, 2006
    #1
    1. Advertisements

  2. msnews.microsoft.com

    David Parkes Guest

    255.255.255.255 Breaks the rules for subnet masks.

    This address would look like 32 1's in binary which is classified as a
    broadcast address. All 0's are also broad cast address. You cannot use this
    subnet mask. Think the biggest you could have would be /31

    Please someone correct me if I'm wrong
     
    David Parkes, Nov 6, 2006
    #2
    1. Advertisements


  3. Subnet mask /32 are commonly used : ppp connexions, pptp tunelling, DSL,
    cable connexion,... it should not break the rules, it's just a single point
    IP, directly routed and not broadcasted on a lan.
     
    msnews.microsoft.com, Nov 6, 2006
    #3
  4. msnews.microsoft.com

    David Parkes Guest

    Thank you for your insight. :)

    I think i could understand how you would use it.
     
    David Parkes, Nov 6, 2006
    #4
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.