Your opinions please

[Kevin Darcy]

Mark Damrose wrote:

> "Chris" <chris.hurt at monsanto.com> wrote in message
> news:a68e33$sal at pub3.rc.vix.com...
> >
> > What are the implications with setting TTL and refresh to the same
> > value?
>
> TTL is how long a caching resolver can hold a record before requesting it
> again.  Set it based on how often this record changes, and what the
> implications of old data are.
>
> Refresh is how often a slave server checks to see if the master server has
> been updated.  Set it based on how much of a problem it is for the master
> and slave to give out different information.  BIND 8 and 9 both support
> NOTIFY, so the master would tell the slave immediately that something has
> changed.  This value is only a backup in case the NOTIFY gets lost.

Or for "stealth" slaves, if for some reason "also-notify" is not set...


- Kevin