recursion and forwarding

[Adamiec, Lawrence]

This is a very good explanation.  Thank you for your help.

Larry


> -----Original Message-----
> From: bind-users-bounces+ladamiec=kentlaw.edu at lists.isc.org
[mailto:bind-users-
> bounces+ladamiec=kentlaw.edu at lists.isc.org] On Behalf Of Phil Mayers
> Sent: Thursday, January 12, 2012 12:35
> To: bind-users at lists.isc.org
> Subject: Re: recursion and forwarding
> 
> On 01/12/2012 06:15 PM, Adamiec, Lawrence wrote:
> 
> > So when does recursion occur, before the query is forwarded or
never? I
> > thought recursion was supposed to go looking for the answers. If
> > recursion does not return an answer then does the query get
forwarded?
> 
> "forwarders" IIRC works as follows:
> 
>   1. If query answer in cache, reply from cache to client, stop
>   2. Send query to forwarders
>   3. If reply, add to cache, reply to client, stop
>   4. No reply: if "forward only" set, error to client, stop
>   5. Perform normal recursion
> 
> That is - it tries cache, then the forwarders, then does recursion
> itself (unless "forward only" is set).
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