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<div class="moz-cite-prefix">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>
On 6/3/2013 2:53 PM, Alan Shackelford wrote:<br>
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cite="mid:0CAFEE527530B9478FCB0DE43662417B6E8D63E5@JHEMTEBEX6.win.ad.jhu.edu"
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
agree with Len. Whenever we merge a new location into our
network, and the circuit is neither fat nor reliable, I make
their DNS forward queries for our internal zones to us, keep
authority for their own zones, and do recursion for
everything else. This allows us to serve the users as we
slowly homogenize the whole mess. The “pecking order” seems
to be authoritative first, forward second, and recursion
last.<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>
<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
V. Shackelford Senior Systems
Software Engineer<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
Johns Hopkins University and Johns Hopkins Medical
Institutions<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Baltimore,
Maryland USA
<a moz-do-not-send="true" href="mailto:ashackel@jhmi.edu"><span
style="color:#0563C1">ashackel@jhmi.edu</span></a>
410-735-4773<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>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
<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>Leonard Mills<br>
<b>Sent:</b> Sunday, June 02, 2013 3:29 PM<br>
<b>To:</b> Jonathan Reed; bind-users<br>
<b>Subject:</b> Re: does zone trump forward?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">As
I understand AUTHORITATIVE trumps anything. For example,
from an inside intranet name server forward the root (".")
to somewhere on your edge, sprinkle in a few internal-only
authoritative zones, and enjoy. This is certainly not the
only choice, but it functions pretty well.<br>
<br>
Len<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p> </o:p></span></p>
<blockquote style="border:none;border-left:solid #1010FF
1.5pt;padding:0in 0in 0in
4.0pt;margin-left:3.75pt;margin-top:3.75pt;margin-bottom:5.0pt">
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<span style="color:black">
<hr align="center" size="1" width="100%">
</span></div>
<p class="MsoNormal" style="background:white"><b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">From:</span></b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
Jonathan Reed <<a moz-do-not-send="true"
href="mailto:cronstate@gmail.com">cronstate@gmail.com</a>><br>
<b>To:</b> bind-users <<a
moz-do-not-send="true"
href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</a>>
<br>
<b>Sent:</b> Sunday, June 2, 2013 12:10 PM<br>
<b>Subject:</b> does zone trump forward?</span><span
style="color:black"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="color:black"><br>
<br>
<o:p></o:p></span></p>
<div id="yiv1021953273">
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">I've
only ever come across bind configs where
forwarding is in place to locate certain
zones, then all other queries are handled by
either recursion or authoritatively. But
what about the other way around, where I'm
master for a few zones but forward the rest?
Consider this:</span><span
style="color:black"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">view
"the-internet" {<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
recursion no;<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
type forward;<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
forwarders { 8.8.8.8; };<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
zone "<a moz-do-not-send="true"
href="http://example.com/"
target="_blank">example.com</a>" {<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
type master<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
file "<a moz-do-not-send="true"
href="http://example.com/"
target="_blank">example.com</a>"<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
......<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">}<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Whats
confusing me is the implied configuration
setting of forward first when the forward
statement is used. If it truly forwards
first, then I see an odd logical scenario
happening. All queries are sent to the
forwarder before being handled by
localhost. Then, once the forwarder
recognizes that I'm the master of <a
moz-do-not-send="true"
href="http://example.com/"
target="_blank">example.com</a>, why
would a loop not occur if the forwarder
matches this view?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">To
ask the question another way, does the
zone statement take precedence on matching
queries over any forwarding?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Thanks<o:p></o:p></span></p>
</div>
</div>
</div>
<p class="MsoNormal"
style="margin-bottom:12.0pt;background:white"><span
style="color:black"><br>
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