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

Discussion in 'Server Networking' started by, 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, the smallest i can define is a /30,, 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 :)
, Nov 6, 2006
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    David Parkes Guest 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
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  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.
, Nov 6, 2006

    David Parkes Guest

    Thank you for your insight. :)

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