Question about new options (9.9.6-P1)

Tony Finch dot at dotat.at
Fri Dec 12 10:54:11 UTC 2014


양지은 <god876 at naver.com> wrote:
>
> I have a question about new options, max-recursion-depth and
> max-recursion-queries  in 9.9.6-P1.
> Would you teach me how the options work?

The ARM has a fairly complete description. Does it answer your questions?

ftp://ftp.isc.org/isc/bind9/9.9.6-P1/doc/arm/Bv9ARM.ch06.html#max-recursion-depth

max-recursion-depth Sets the maximum number of levels of recursion that
are permitted at any one time while servicing a recursive query. Resolving
a name may require looking up a name server address, which in turn
requires resolving another name, etc; if the number of indirections
exceeds this value, the recursive query is terminated and returns
SERVFAIL. The default is 7.

max-recursion-queries Sets the maximum number of iterative queries that
may be sent while servicing a recursive query. If more queries are sent,
the recursive query is terminated and returns SERVFAIL. The default is 50.

> I am also wondering if they are applied each request query or global option.

Per query.

Tony.
-- 
f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
Faeroes, Southeast Iceland: Northerly gale 8 to storm 10 backing westerly 5 to
7. High or very high, becoming rough or very rough, occasionally moderate
later in Southeast Iceland. Snow showers. Moderate or poor, occasionally very
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