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Re: Standard Times

From: Men & Mice Support
Date: Monday, October 1, 2001
Time: 12:15:39 pm

There are several different RFC's that give suggested values, and
they're all different. Here are some good values:

Refresh: 28800 (8 hours) to 86400 (1 day)
Retry: 1800 (30 minutes) to 7200 (2 hours)
Expire: 2419200 (4 weeks)
Minimum, Default TTL, Negative Caching, and/or TTL: 86400 (1 day)

There's no real reason to change from the default values for any of
this, except:

- If you have lots of slave zones on a server, to the point where
QuickDNS has trouble doing a refresh check on all of them when it
first starts up, you may want to set the retry value to a low number
(on the master server); setting it as low as 300 (5 minutes) should
have vanishingly little impact on server performance while giving the
slave server plenty of time to retry everything.

- If your setup is fairly stable, you may want to increase the Expire
time to something longer than the default 1 week, in case your master
server goes down for an extended period of time while you're not
around to fix things.
____________________________________________________________________
Chris Buxton Men & Mice
cbuxton@menandmice.com Making DNS Easy

At 11:22 AM -0700 10/1/01, Chris Parker wrote:
>What are the generally accepted "standard" values for Retry,
>refresh, TTL, etc for domains that are projected to be unchanged for
>the foreseeable future?
>
>Chris Parker
>Pacific Business Systems / ClubMac




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