Split-Namespace, Split-Brain, and Split-Horizon DNS

Discussion in 'DNS Server' started by icebag, Apr 19, 2004.

  1. icebag

    icebag Guest

    are they all the same?

    If they are, why and how they have these names of
    splitting headache?
    icebag, Apr 19, 2004
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  2. Yeah - they're the same. tomayto tomaato - whatever you want to call it.

    Brian Desmond
    Windows Server MVP

    Brian Desmond [MVP], Apr 19, 2004
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  3. Yes. Split-Horizon is more formal name found in the Bind book. People use
    Split-brain a lot, put I don't care for that usage much as it brings a
    negative connotation IMO.
    William Stacey [MVP], Apr 19, 2004
  4. icebag

    icebag Guest

    Thanks everyone! Icebag
    icebag, Apr 20, 2004
  5. icebag

    Roger Abell Guest

    It would be nice to simply speak of using a private namespace,
    but with regrets that is inaccurate as a namespace is per the RFCs
    rooted with the null label (i.e. . ) Hence an internal, private set
    of DNS zones does not form a namespace unless disconnected from
    the (world's) namespace through use of internal, private root servers.
    Roger Abell, Apr 20, 2004
  6. icebag

    icebag Guest

    I think what the term is trying to describe the fact that
    you do have an internal namespace with an internal root
    (RFCs), however you are using the same name inside,
    abc.com, as the one registered on the Internet, which on
    the outside public network blongs to another namespace
    (the Internet namespace). For the so called split-
    namespace, there are actually two independent namespaces,
    public (shadow) and private (real), interconnected when
    your are using the same name on both the inside and
    outside networks...
    icebag, Apr 21, 2004
  7. icebag

    Roger Abell Guest

    Well, yes I agree with what you say, in that I like to just
    call them separate namespaces. However, my point was
    that this run afoul of the (RFC) definition of "namespace"
    unless the internal network has no external resolution
    available to it (namespace requires a root ".")
    Roger Abell, Apr 22, 2004
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