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<div class="moz-cite-prefix">On 09/07/2017 20:51, Reindl Harald
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:f37e4800-67e1-37ac-3960-8629bff002a3@thelounge.net">
<br>
Am 09.07.2017 um 20:41 schrieb Warren Kumari:
<br>
<blockquote type="cite">On Sun, Jul 9, 2017 at 1:59 PM John W.
Blue <<a class="moz-txt-link-abbreviated" href="mailto:john.blue@rrcic.com">john.blue@rrcic.com</a>
<a class="moz-txt-link-rfc2396E" href="mailto:john.blue@rrcic.com"><mailto:john.blue@rrcic.com></a>> wrote:
<br>
<br>
Abdulhadi,____
<br>
<br>
__ __
<br>
<br>
Honestly, I think that a design spec of getting DNS
responses in 3ms
<br>
across the board is unrealistic. My initial MX query for
litc.ly
<br>
<a class="moz-txt-link-rfc2396E" href="http://litc.ly"><http://litc.ly></a> took 367ms:____
<br>
<br>
__
<br>
<br>
<br>
Like many poorly written / articulated SLAs, the devil is in the
details.
<br>
<br>
I could happily read this as the server / service must respond
within 3ms. The OP mentioned VIP, so this could be for auth DNS,
in which case responding to a query within 3ms is trivial...
<br>
</blockquote>
<br>
no it is not - at least not if there is an internet connection
between customer and dns server since you hardly get even a 3 ms
ping time
<br>
<br>
on the server itself yes
<br>
<br>
frankly even in a local network you end with ;; Query time: 1 msec
for a "dig NS" and that a nameserver can respond on localhost
below that is completly worthless
<br>
<br>
</blockquote>
Thinking about this, the only solution that seems remotely possible
is to let the customer have the DNS server on his premises. That way
all queries that come from cache could be fast enough. Those it
needs to resolve from the Internet, will take longer time.<br>
<br>
The next question is who shall maintain that server on his premises?
All sorts of questions come to mind.<br>
<br>
<pre class="moz-signature" cols="72">--
Best regards
Sten Carlsen
No improvements come from shouting:
"MALE BOVINE MANURE!!!"
</pre>
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