Date: Sat, 20 Feb 1999 15:06:37 -0500 (EST) From: hometeam <hometeam@techpower.net> To: Dan Langille <junkmale@xtra.co.nz> Cc: Namodn ROOT <root@namodn.com>, dan@wolf.com, freebsd-questions@FreeBSD.ORG Subject: Re: off-site secondary DNS Message-ID: <Pine.BSF.4.05.9902201505590.9032-100000@techpower.net> In-Reply-To: <19990220194927.SBRW3226200.mta2-rme@wocker>
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why access so often ? On Sun, 21 Feb 1999, Dan Langille wrote: > I dunno. It depends on the circumstances I suppose. Why did you suggest > those values? > > On 20 Feb 99, at 14:40, hometeam wrote: > > > > > wouldn't these be a bit better? > > > > 86400 ; Refresh > > 21600 ; Retry > > 604800 ; Expire > > 86400) ; Minimum TTL > > > > > > On Sun, 21 Feb 1999, Dan Langille wrote: > > > > > Most people now use a serial number of the form YYYYMMDDHHMM. And the > > > refresh rate determines how often the secondary will check the primary for > > > a more recent serial number. Here's an example of these values from my > > > website: > > > > > > @ IN SOA mydomain.com. root.freebsd.mydomain.com. ( > > > 199902210845 ; Serial > > > 3600 ; Refresh > > > 300 ; Retry > > > 3600000 ; Expire > > > 3600 ) ; Minimum > > > > > > The above shows that I modifed the zone files on 21 Feb 1999 at 08:45. > > > The secondary will compare that serail value to it's own. If the primary > > > contains a newer value, the secondary will request a zone transfer. The > > > secondary will check the primary's serial number every 3600 seconds (every > > > hour). > > > > > > Sorry. I really should have said all this the first time. > > > -- > Dan Langille > The FreeBSD Diary > http://www.FreeBSDDiary.com/freebsd > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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