Negative caching config

[Michele Chubirka]

By setting the negative TTL in named.conf, doesn't that override any
settings in the individual zone files?

----- Original Message -----
From: "J Marquez" <sunsol19712003 at yahoo.es>
To: "Barry Margolin" <barmar at alum.mit.edu>;
<comp-protocols-dns-bind at isc.org>
Sent: Thursday, March 04, 2004 3:36 AM
Subject: Re: Negative caching config


> Thank you very much Barry.
>
> Best regards!
> Barry Margolin <barmar at alum.mit.edu> wrote:
> In article ,
> J Marquez wrote:
>
> > We are pretty new by configuring DNS. We would like to activate
"negative
> > cache" in our Cache DNS's. We have searched the archives to look for a
> > specific procedure, but haven't found anyone (sorry, if this question is
>
> All BIND 8 or 9 releases from the last 5 years implement negative
> caching by default; you don't have to do anything to enable it.
>
> > alredy solved in one of them). We think we have to add
> > "max-ncache-ttl
> > in named.conf but not sure if its necessary additional steps or it does
> > matter the position of this line inside named.conf
>
> "max-ncache-ttl" just allows you to set a cap on the negative cache
> time. It's not normally needed.
>
> > Also for a cache DNS, what would be the ideal TTL for Negative Cache?
>
> That's not controlled on the caching DNS, it's set in the SOA records of
> the domains.
>
> --
> Barry Margolin, barmar at alum.mit.edu
> Arlington, MA
> *** PLEASE post questions in newsgroups, not directly to me ***
>
>
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