"domain switching / substitution"

Mark_Andrews at isc.org Mark_Andrews at isc.org
Thu Dec 4 22:53:31 UTC 2003


> Searched the acrhives and did't find an answer to this one.  Is it 
> possible to do a domain switch.
> 
> You are the SOA of blah.com and blam.com.  Currently all clients are set 
> to resolve using the domain blah.com.  You want to switch over to 
> blam.com but you don't want to touch the clients.  So you what you want 
> to have happen is that when a client asks to resolve joe.blah.com you 
> will automatically report the ip of joe.blam.com.  I know I can create 
> individual cnames but can you just do it accross a domain.  This was 
> possible on a piece of software (meta ip from checkpoint) that was based 
> on bind but I was wondering if there is some clever way of doing this 
> like a zone statement.  Thus allowing to me throw a switch and blah goes 
> to blam and vice-versa.  Probably a better anology is that I have 30 
> machines in $host.server.a.blah.com and the same 30 machines in 
> $host.server.b.blam.com(different ip address, same name).  when I get 
> the signal I just want clients that request host.server.a.blah.com to 
> get (point to what ever) get the ip of host.server.b.blam.com.
> 
> JOHN

	You need a server that supports DNAME.

	blah.com. SOA
	blah.com. NS
	blah.com. MX
	blah.com. A
	blah.com. DNAME blam.com.
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org


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