Preparing for upcoming DNSSEC changes on 5/5

[Lightner, Jeff]

I was using the Java tester on a Windows system and saw the same
4096/3843 as I'd seen with DIG and just now noticed this comment in its
results:

"Note: There will always be a difference between the announced and
measured buffer size because of the algorithm used. However this
difference should not exceed 300 bytes."

Also one of the links I sent earlier had a similar comment about less
than 300 bytes difference not being a problem.  I had missed that.

4096 - 3843 = 153 
It seems if I'd paid attention I'd not have posted my follow up
questions.

-----Original Message-----
From: bind-users-bounces+jlightner=water.com at lists.isc.org
[mailto:bind-users-bounces+jlightner=water.com at lists.isc.org] On Behalf
Of Peter Laws
Sent: Monday, May 03, 2010 4:29 PM
To: Kalman Feher
Cc: bind-users at isc.org
Subject: Re: Preparing for upcoming DNSSEC changes on 5/5

On 05/03/10 14:56, Kalman Feher wrote:

> You probably should. Your resolver is saying its capable of handling
4096,
> but apparently your network path may not support that. The changes on
the


The network path to dns-oarc.net doesn't, but that doesn't really mean 
anything.  To some resolvers, the path may support 4096 while to others
it 
is 591.  Who knows where the constriction is?

I still don't see the point of setting it to something *smaller* than
the 
default unless I knew for certain that MY stuff couldn't handle a larger

size.  12 of the 16 hops twixt here and there are far beyond my control 
(and the other 4 only marginally :-).


Besides, we've seen one example where setting it smaller results in yet
a 
smaller result.




-- 
Peter Laws / N5UWY
National Weather Center / Network Operations Center
University of Oklahoma Information Technology
plaws at ou.edu
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