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<div class="moz-cite-prefix">Please excuse my prickliness, but I've
spent almost a whole career dealing with the wreckage of
inappropriate forwarding...<br>
<br>
- Kevin<br>
<br>
On 6/4/2013 9:42 AM, Alan Shackelford wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
wasn’t trying to start a fight. Perhaps I didn’t provide
enough detail.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We
have 2843 authoritative zones. We run a split brain DNS. The
new hospitals and other entities need to see our internal
zone view once they have “joined”. So I have them forward
queries during the early stages of the merger, until I can
get control of their DNS and make appropriate changes. There
are fatherhood issues and all manner of ego problems
involved in absorbing someone else’s DNS. This step provides
a workable solution in the very first stages. Then I make
them slaves, with a reasonable expire time, to give them a
copy of the data locally.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">As
for the distinction between forwarding and recursion, I used
the term forwarding to describe him sending queries for my
internal zones to me, thereby ensuring he sees the internal
presentation of the data. I used the term recursion to
describe his DNS doing recursion for all names and IPs that
were not owned by either of us. This allows his users to
look up all of his data, and all other data on earth except
mine, no matter what happens with the cup-and-string
circuit. Then, once the fiber is turned up, we do a proper
merge.
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Sorry
to have ruffled Kevin’s feathers. Just trying to describe a
behavior in response to a question from the field. I was
certainly not recommending a configuration. Not everyone has
to deal with these issues in a clinical environment. I do.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Alan<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">
<a class="moz-txt-link-abbreviated" href="mailto:bind-users-bounces+ashackel=jhmi.edu@lists.isc.org">bind-users-bounces+ashackel=jhmi.edu@lists.isc.org</a>
[<a class="moz-txt-link-freetext" href="mailto:bind-users-bounces+ashackel=jhmi.edu@lists.isc.org">mailto:bind-users-bounces+ashackel=jhmi.edu@lists.isc.org</a>]
<b>On Behalf Of </b>
Kevin Darcy<br>
<b>Sent:</b> Monday, June 03, 2013 3:40 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</a><br>
<b>Subject:</b> Re: does zone trump forward?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Why would you use forwarding over links
that are "neither fat nor reliable"? Are you a masochist?
Replication of the data is much recommended over such
links...<br>
<br>
As for your "pecking order", what distinction are you
drawing between forwarding and recursion? Forwarding is
recursive. The high-level distinction is between having the
data authoritative locally and not having it authoritative
locally. If you want to make a finer distinction within the
not-locally-authoritative case, then make the distinction
between recursive (e.g. forwarding) and iterative (e.g.
stub, or delegation from an internal root zone).<br>
<br>
- Kevin<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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