Local resolution of some parent domain hosts

[Kerney, Stephen A]

Thanks Barry, that did the trick and I'm now using 3 different .db files to locally resolving 3 different fully qualified hostnames to the desired IP
address on my "parent" domain.

Here is an example syntax to a host1.b.c.db file (based on responses from October of last year to a similar question along with a couple of "DNS and BIND"
comments thrown in for good measure).  Please correct me if I have a mistake somewhere.

	$TTL   3h 
	@       IN      SOA     @ root.localhost (
                                        3      ; Serial
                                        3h      ; Refresh after 3 hours
                                        1h      ; Retry after 1 hour
                                        1w      ; Expire after 1 week
                                        1h )    ; Negative caching TTL of 1 hour


	; Name Servers

	@       IN      NS      dns_server.a.b.c

	; Addresses for the canonical names

	@       	IN	A       	10.0.1.1


Now I'd like to be able to add aliases to these .db files so I can, if possible, minimize the # of .db files supporting the b.c domain (e.g., 3 instead of
23).  I tried adding a single CNAME entry to the above .db file without success:

alias_name	IN	CNAME		host1.b.c.

I also tried this:

alias_name	IN	CNAME		@

Is adding aliases to host.b.c.db files for use in an a.b.c domain supported without creating separate db files for each alias and, if so, how is this done?


Steve

-----Original Message-----
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
Behalf Of Barry Margolin
Sent: Friday, April 13, 2007 10:12 PM
To: comp-protocols-dns-bind at isc.org
Subject: Re: Local resolution of some parent domain hosts


In article <evo9vt$12ut$1 at sf1.isc.org>,
 "Kerney, Stephen A" <stephen.a.kerney at usa-spaceops.com> wrote:

> Is it possible to configure a BIND 8.1.2 name server which is authoritative 
> for domain A.B.C. to locally resolve some, but not all, of the hosts on 
> parent
> domain B.C. such that B.C. domain name servers are used by the A.B.C. domain 
> name server to resolve all other B.C. hosts and x.B.C subdomain hosts and if
> so, how is this configuration set up?

Configure your server as authoritative for the specific host.B.C zones 
that you don't want to go to the parent server for:

zone "host1.b.c" {
  type master;
  file "host1.b.c.db";
};
zone "host2.b.c" {
  type master;
  file "host2.b.c.db";
};
....

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA