recursion and forwarding

Kevin Darcy kcd at chrysler.com
Thu Jan 12 18:30:18 UTC 2012


You're getting caught up in semantics. The forwarding of the query *is* 
recursive resolution. It's not a separate operation.

                                                                         
                                                                         
                                 - Kevin
On 1/12/2012 1:15 PM, Adamiec, Lawrence wrote:
>
> Hi,
>
> I am running one master server and one slave server with BIND 
> 9.6.1-P3.  The global options section on both servers are identical.
>
> In the options section I have,
>
>     allow-recursion { ck_domain; };
>
>     forwarders { 216.47.128.11; 216.47.128.12; 216.47.143.90; };
>
> The ck_domain ACL contains internal IPs only.
>
> The documentation I have read states that forwarders will forward a 
> client's query if the answer is not in the server's cache and the 
> server does not know the answer.
>
> 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?
>
> Larry Adamiec
>
> UNIX Mgr.
>
> 312-906-5301
>
>
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