https://community.hpe.com/t5/operating-system-linux/dns-slaive-problem-in-linux-8-0/m-p/2938630#M89122 Note: The Slave must be authorized to receive the transfer from the Master DNS:<BR /><BR />Zone transfer: Where the slave sends the master a NOTIFY request for a particular zone and the master responds with the information, if the slave is authorized to receive the transfer. <BR /><BR />Here is the Red Hat How-To Link:<BR /><BR />A mechanism called zone-transfer is used to copy the data. The zone transfer is controlled by your SOA record: <BR /><BR /><BR /><BR />--------------------------------------------------------------------------------<BR /><BR />@ IN SOA ns.linux.bogus. hostmaster.linux.bogus. (<BR /> 199802151 ; serial, todays date + todays serial #<BR /> 8H ; refresh, seconds<BR /> 2H ; retry, seconds<BR /> 4W ; expire, seconds<BR /> 1D ) ; minimum, seconds<BR /><BR /><BR />--------------------------------------------------------------------------------<BR /><BR /><BR />A zone is only transferred if the serial number on the master is larger than on the slave. Every refresh interval the slave will check if the master has been updated. If the check fails (because the master is unavailable) it will retry the check every retry interval. If it continues to fail as long as the expire interval the slave will remove the zone from it's filesystem and no longer be a server for it. <BR /><BR /><BR /><A href="http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-5.php3" target="_blank">http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-5.php3</A><BR /><BR />SOA Recored:<BR /><BR /><A href="http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-7.php3" target="_blank">http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-7.php3</A> Sat, 29 Mar 2003 18:58:44 GMT Michael Steele_2 2003-03-29T18:58:44Z https://community.hpe.com/t5/operating-system-linux/dns-slaive-problem-in-linux-8-0/m-p/2938629#M89121 I have set up two DNS servers on Red Hat Linux 8.0<BR />1.The primary DNS server is able to resolve names and ping the addresses defined.<BR />2.But the secondary DNS is not able to resolve any name.<BR />3.Also the Desktops clients are not able to resolve any name when I give the Primary DNS server IP address.<BR /><BR />Can any suggest some solution for this.<BR /><BR />I ahve crosschecked the settings in /etc/named.conf, they look ok.<BR />How to trnsfer this zone? Sat, 29 Mar 2003 18:24:45 GMT https://community.hpe.com/t5/operating-system-linux/dns-slaive-problem-in-linux-8-0/m-p/2938629#M89121 Sachin_17 2003-03-29T18:24:45Z https://community.hpe.com/t5/operating-system-linux/dns-slaive-problem-in-linux-8-0/m-p/2938630#M89122 Note: The Slave must be authorized to receive the transfer from the Master DNS:<BR /><BR />Zone transfer: Where the slave sends the master a NOTIFY request for a particular zone and the master responds with the information, if the slave is authorized to receive the transfer. <BR /><BR />Here is the Red Hat How-To Link:<BR /><BR />A mechanism called zone-transfer is used to copy the data. The zone transfer is controlled by your SOA record: <BR /><BR /><BR /><BR />--------------------------------------------------------------------------------<BR /><BR />@ IN SOA ns.linux.bogus. hostmaster.linux.bogus. (<BR /> 199802151 ; serial, todays date + todays serial #<BR /> 8H ; refresh, seconds<BR /> 2H ; retry, seconds<BR /> 4W ; expire, seconds<BR /> 1D ) ; minimum, seconds<BR /><BR /><BR />--------------------------------------------------------------------------------<BR /><BR /><BR />A zone is only transferred if the serial number on the master is larger than on the slave. Every refresh interval the slave will check if the master has been updated. If the check fails (because the master is unavailable) it will retry the check every retry interval. If it continues to fail as long as the expire interval the slave will remove the zone from it's filesystem and no longer be a server for it. <BR /><BR /><BR /><A href="http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-5.php3" target="_blank">http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-5.php3</A><BR /><BR />SOA Recored:<BR /><BR /><A href="http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-7.php3" target="_blank">http://www.europe.redhat.com/documentation/HOWTO/DNS-HOWTO-7.php3</A> Sat, 29 Mar 2003 18:58:44 GMT https://community.hpe.com/t5/operating-system-linux/dns-slaive-problem-in-linux-8-0/m-p/2938630#M89122 Michael Steele_2 2003-03-29T18:58:44Z