RoundRobin question

William Stacey staceyw at mvps.org
Thu May 20 04:50:46 UTC 2004


Thanks for the reply Barry.  However I am confused.  Would this not be node
"www.division1.mycompany.com" in the zone with one rrSet (A type) containing
two A records?  Unless they are actually creating a node "division1" in the
zone which contains the "www" node.  Not sure this kind of pysical node tree
would be required if you just used a hash table for the ownerNames.  Maybe
so...

-- 
William Stacey

"Barry Margolin" <barmar at alum.mit.edu> wrote in message
news:c8gvf0$2d0g$1 at sf1.isc.org...
> In article <c8grsu$2969$1 at sf1.isc.org>,
>  "William Stacey" <staceyw at mvps.org> wrote:
>
> > Same question.  How would you define that in the db and when would this
ever
> > be useful?
>
> Suppose you have a domain mycompany.com.  You might have web servers for
> different divisions, www.division1.mycompany.com,
> www.division2.mycompany.com, etc.  In the zone file you would enter:
>
> www.division1 IN A <address>
> www.division2 IN A <address>
>
> > -- 
> > William Stacey
> >
> > "Kevin Darcy" <kcd at daimlerchrysler.com> wrote in message
> > news:c8gbrb$1pjp$1 at sf1.isc.org...
> > > William Stacey wrote:
> > >
> > > >>but underneath each name is 0 or more RRsets, and then even within
an
> > > >>
> > > >>
> > > >
> > > >Wanted to ask this question before as I saw it in the rfc.  When/how
> > would a
> > > >0 length node be valid or needed?
> > > >TIA
> > > >
> > > There is such a thing as an "empty non-terminal node". E.g. if
> > > big.hairy.ape.com owns records, but hairy.ape.com does not, then
> > > hairy.ape.com would be considered an empty non-terminal node. The
reason
> > > the nameserver needs to keep track of empty non-terminals is because
> > > those names actually _do_ exist, but don't happen to own any records.
> > > Queries for such a name would therefore return NODATA (a pseudo-RCODE
> > > consisting of a NOERROR RCODE and 0 answers) instead of NXDOMAIN.
> > >
> > >
> > >                                                       - Kevin
> > >
> > >
> > >
>
> -- 
> Barry Margolin, barmar at alum.mit.edu
> Arlington, MA
> *** PLEASE post questions in newsgroups, not directly to me ***
>



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