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North American Network Operators Group

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Re: Delegating /24's from a /19

  • From: Robert Blayzor
  • Date: Tue Mar 15 15:13:12 2005

alex@pilosoft.com wrote:
> Either by doing DNS delegation on the zone boundary or by SWIP'ing the 
> space to the other company.

You can SWIP it yes, but that won't help DNS on small blocks like /24's.

> It is very easy to do DNS delegation, say if you have 128.0.0.0/19, and 
> you want to delegate 128.0.1.0/24, in your zone file for 
> 0.128.in-addr.arpa zone put 
> 
> 1 IN	NS	ns1.othercompany.com
> 1 IN	NS	ns2.othercompany.com

The only way it will work is to use RFC2317 or slave the zones from the
other name server.  Because he does not have the entire /16 you can't
just delegate like that.

-- 
Robert Blayzor, BOFH
INOC, LLC
rblayzor\@(inoc.net|gmail.com)
PGP: http://www.inoc.net/~dev/
Key fingerprint = 1E02 DABE F989 BC03 3DF5  0E93 8D02 9D0B CB1A A7B0

Sure it's user-friendly...if you know what you're doing.




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