Forward vs Authoritative traffic

[Darcy Kevin (FCA)]

If your nameserver can get the info equally reliably either way, I'd question why you're using forwarding in the first place.

Do you think you're going to get some sort of performance benefit from that?

But, to answer your question, in the absence of taking a packet capture, you could always define all the authoritative nameservers as "blackhole" or "bogus" in your named.conf and see if the names still resolve (this assumes that the forwarders are *not* the same, or a subset, of the auth servers. If they are the same, or a subset, then I *really* would question why you're forwarding in the first place, since in that case the queries are going to *exactly*the*same*place*, and all you're basically doing is manipulating the value of the "RD" bit).

												- Kevin

-----Original Message-----
From: bind-users-bounces at lists.isc.org [mailto:bind-users-bounces at lists.isc.org] On Behalf Of Nex6|Bill
Sent: Friday, November 07, 2014 3:05 PM
To: Barry Margolin
Cc: comp-protocols-dns-bind at isc.org
Subject: Re: Forward vs Authoritative traffic

My name server is not authoritative for it.  but i want to verify once the forward is in place the query is following the forward and not the authoritative path.


On Nov 7, 2014, at 11:46 AM, Barry Margolin <barmar at alum.mit.edu> wrote:

> In article <mailman.1182.1415388915.26362.bind-users at lists.isc.org>,
> Nex6|Bill <n6ghost at yahoo.com> wrote:
> 
>> I am going to be adding a type forward zone for an important zone.  
>> how can i test that the forward is working correctly? if i do a dig 
>> against the NS the record will return no matter if its auth or fwd zone.
> 
> If you don't have a zone file for the zone on the server, yet it 
> returns the correct answer, then it must be forwarding. Where else 
> would it get the answer?
> 
> --
> Barry Margolin
> Arlington, MA
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