zone file settings question
Madison Kelly
linux at alteeve.com
Mon Oct 15 17:33:29 UTC 2007
Hi all,
I was trying to find out what certain settings effect. For example,
in a zone file with the following...
-=-=-=-=-
$ORIGIN .
$TTL 38400 ; 10 hours 40 minutes
domain.com IN SOA ns1.nsserver.com. admin.domain.com. (
2007101501 ; serial
10800 ; refresh (3 hours)
3600 ; retry (1 hour)
86400 ; expire (1 day)
38400 ; minimum (10 hours 40 minutes)
)
...
-=-=-=-=-
What do these fields mean?
- refresh
Would I be right in guessing that this time is how often a client would
try to check the zone for updates, but failing to get a response would
keep using the TTL so long as it was valid?
- retry
Is this the amount of time, after a failed attempt to contact the
server, that a client would wait before trying again?
- expire
How is this different from 'ttl'?
- minimum
Not sure even of a guess...
I hope these aren't "obvious" questions... I tried reading the docs
at the ICS website, but couldn't find these details.
Thanks all!
Madi
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