Dynamic DNS and Slave Servers

[Joseph S D Yao]

On Thu, Jun 18, 2009 at 11:25:29AM -0700, Gregory Hicks wrote:
...
> I'll bite!  What is the difference between a sub*domain* and a
> sub*zone*?
...


A subdomain can be within the same zone.  For as many levels of child or
sub-domains as you want:

zone example.edu { ... }
zone system.subnet.student.class.semester.department.example.edu { ... }

where all intermediate subdomains are part of the example.edu zone.

Normally, the name servers for the subzone / child zone are delegated
within the parent zone.  It is possible to have a subzone / child zone
that is NOT delegated; so only those resolving name servers that happen
to know a priori (forward zones e.g.) where the subzone is hosted, would
have access to those zones.

Much older name versions of BIND, which one may hope no longer are
running, would have combined these two zones; but current versions of
BIND separate them more cleanly.


-- 
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** Joe Yao				jsdy at tux.org - Joseph S. D. Yao
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