Can I be a parent for a zone and a slave for a subdomain?

[Michele Chubirka]

But if I delegate a subdomain, the entry in my db file lists the
nameserver(s) for that delegated domain. So then  how does named decide
where to go?! Won't I get lots of non-authoritative answers for anything in
that delegated subdomain if I do it this way? Will it check the db file
which has been zone transferred first instead of following the pointer to
the subdomain's name server? Is this really the best way to do this? What
about the in-addr.arpa files, won't  I have conflicts with that? Instead of
pointing to a nameserver for the delegated zone, they'll have hostname
entries. Wouldn't it be better to have the subdomains be secondaries for
each other?

Michele Chubirka
Systems Administrator
George Washington University
202-994-5791
----- Original Message -----
From: "Kevin Darcy" <kcd at daimlerchrysler.com>
To: <bind-users at isc.org>
Sent: Friday, September 15, 2000 11:42 PM
Subject: Re: Can I be a parent for a zone and a slave for a subdomain?


>
> A subzone delegation, in and of itself, publishes the existence of a zone
in
> the DNS database, but it does not specify who is master and who is slave
for
> the zone. This is something that needs to be configured "privately" into
the
> nameservers themselves. In the case of BIND, you configure the
master/slave
> distinction and associated parameters in the named.conf file. So no,
there's no
> contradiction in delegating a subzone and also being slave for it. These
things
> are configured in different places and serve different purposes. Being a
master
> means maintaining the original copy of the zone file; being a slave means
you
> get only a replica of the zonefile through an automated process. No-one
else
> really knows for sure, or cares, who the slave and who the master is. All
the
> delegation records do is provide enough information so that
> *some* authoritative (i.e. master *or* slave, it doesn't matter)
nameserver can
> be found to answer the queries.
>
>
>
> - Kevin
>
> Michele Chubirka wrote:
>
> > I've recently taken over the VERY large task of repairing our zone and
> > upgrading our name server to Bind 8 from 4.97. I'm relatively new to
> > DNS/Bind, but I've been closely studying this list and the O'Reilly Bind
> > book.
> > We have a class B subnet and administer a large domain with many
subdomains.
> > What I'm really confused about is that (according to the book and the
> > representatives from ISPs I've spoken to) I understood that if I
delegated a
> > subdomain, I only maintained pointers to those domains by including
their
> > nameservers in my db files for said subdomains.
> > I have a master and secondary nameserver upon which I make
changes/updates.
> > But after closely studying the files and speaking to the administrator
for
> > one of our subdomains, she indicates that she makes entries for her
domains
> > and then transfers her zone to my primary nameserver. Is this correct?!
How
> > can I be a Primary for the parent domain and a secondary for one of my
> > subdomains? Wouldn't I have to have two configuration files? Or one
> > indicating that I was primary for the parent zone, but secondary for the
> > subdomain/child?
> > When I look in the configuration file for our zone, the subdomain's
> > nameservers are listed as secondary name servers for my domain, BUT
THEY'RE
> > MAKING ENTRIES for the subdomains! If they're secondaries, how can they
make
> > entries and be SOA for their subdomains?
> >
> > Michele Chubirka
> > Systems Administrator
> > George Washington University
> > 202-994-5791
>
>
>
>
>
>