easy to understand definitions
barmar at alum.mit.edu
Thu Mar 24 01:35:14 UTC 2005
In article <d1s41h$1985$1 at sf1.isc.org>, Bob Lockie <bjlockie at lockie.ca>
> I don't understand "expire" and "refresh", it would seem that "expire"
> should always be equal to the "refresh" time"?
That would effectively negate the value of having slave servers. The
point of multiple servers is fault-tolerance. You want the slaves to
continue serving the zone when the master has failed, don't you? If you
set Expire == Refresh, then when the slave checks whether a zone
transfer is needed, and doesn't get an answer from the master, it will
stop answering for the zone, and you'll have *no* servers responding.
Barry Margolin, barmar at alum.mit.edu
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