Re: DNS Serial Number Re: [SLUG] search and replace

["Peter Samuel" <Peter.Samuel@nospam.ind.tansu.com.au>]

On Wed, 28 Jun 2000, Dean Hamstead wrote:

> > 
> > DO NOT FORGET TO UPDATE THE DNS SERIAL NUMBER!
> > 
> 
> How and why should this be done?

On the assumption that you are running bind, its config files have a
serial number. THat number is used when doing things like zone
transfers. If the secondary zone sees that the serial number for the
current data is the same as last time, then it doesn't bother to do
the transfer because it assumes nothing has changed.

So, if you change dns details, you MUST increase the serial number so
that your secondaries know that there is new data.

There is a much better (and more complete) explanation of all this in
the O'Reilly BIND book.

Regards
Peter
----------
Peter Samuel                                peter@nospam.eserv.com.au
Technical Consultant                        or at present:
eServ. Pty Ltd                              Peter.Samuel@nospam.ind.tansu.com.au
Phone: +61 2 9206 3410                      Fax: +61 2 9281 1301

"If you kill all your unhappy customers, you'll only have happy ones left"

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