Search Again: Re: Question about secondary zone updates... From: Len Conrad Date: Sunday, September 9, 2001 Time: 2:57:41 am >I was under the understanding that the REFRESH parameter (field 2) set t= he >time between updates, > and the RETRY parameter (field 3) set the time delay >between update retries, between failures to reach the master. > until the zones were aligned. None of this meant >anything though until the SERIAL number (field 1) on the Primary zone ha= d >been incremented. After the SERIAL number is incremented ... the master will send a NOTIFY packet to all NS records in the zone. >, then at the next >Refresh, the secondary would look to the authorative primary for changes= , >and if the SERIAL is found changed and greater, start a zone transfer. T= he >NOTIFY just forces this behaviour but the secondary DNS still needs to >verify that the SERIAL number has changed. yep >Is it possible that your SERIAL number on the primary zone is not >imcrementing, and thus not forcing the zone transfer. yep >I just checked these figures, and need to know if these are standard acr= oss >all platforms and implementations (ie RFC based standards) >Refresh - 3hours (10800), Retry - 60mins (3600) I=B4d go with 900 >Expire - 3days (259200), "expire zone" 7 to 10 days. >MinTTL - 60mins (3600) The last field in the SOA is now "negative TTL", and I think the max is 1= 0800. >and TTL - 60mins (3600) $TTL is now required before the SOA (at zone top) and is the default TTL=20 for all records not having an explicit TTL value. btw, the default network class is INternet, so you can leave that "IN" of= f all records to simplify. Len ___________________________________________________________________ Men & Mice: QuickDNS - DNS Expert - DNS Training - DNS Consulting DNS Classes: Denver Sep. 20-21, NYC Sep. 27-28, Toronto Oct. 18,19 Frankfurt Nov.21-23, London Nov. 26-28, Maidenhead Oct. 31-Nov 2 http://MenAndMice.com/DNS-training

Messages In This Thread: Question about secondary zone updates... by listaccount@starionline.com on Sep 8, 2001 at 9:58:30 am Re: Question about secondary zone updates... by Len Conrad on Sep 8, 2001 at 10:11:43 am Re: Question about secondary zone updates... by listaccount@starionline.com on Sep 8, 2001 at 10:24:19 am Re: Question about secondary zone updates... by Cali on Sep 8, 2001 at 10:45:25 am Re: Question about secondary zone updates... by Len Conrad on Sep 8, 2001 at 10:48:00 am Re: Question about secondary zone updates... by listaccount@starionline.com on Sep 8, 2001 at 10:57:17 am Re: Question about secondary zone updates... by Len Conrad on Sep 8, 2001 at 11:06:36 am Re: Question about secondary zone updates... by Cali on Sep 8, 2001 at 11:23:09 am Re: Question about secondary zone updates... by Cali on Sep 8, 2001 at 11:24:27 am Re: Question about secondary zone updates... by Mat Robertson on Sep 8, 2001 at 10:55:43 pm Re: Question about secondary zone updates... by Len Conrad on Sep 9, 2001 at 2:57:41 am Re: Question about secondary zone updates... by Cali on Sep 9, 2001 at 3:15:25 pm Re: Question about secondary zone updates... by Men & Mice Support on Sep 9, 2001 at 5:02:35 pm