to +norec or not to +norec

Barry Margolin barmar at alum.mit.edu
Fri Dec 31 02:56:31 UTC 2004


In article <cr1tlv$1h7s$1 at sf1.isc.org>,
 "kirkgbr at yahoo(dot)com" <kirkgbr at yahoo.com> wrote:

> I gotcha (i think).  The actual query data being sent depends on the
> type of source "device".
> 
> stub resolver=client sends one type of "data" for queries.
> 
> recursion enabled name servers send a different type of "data" for
> queries.
> 
> Did i get that correct?

Right.  A client sends a single query to its nameserver, and requests 
that it perform recursion to get the answer for it.

When the server is trying to get the answer, it sends non-recursive 
requests.  It expects to get back referrals and keeps querying more 
specific servers.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***



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