On 2 Jul 2003, Hagibis Fan wrote: > re: > > 1. the clients samples return times or something, > and uses the info to select the "nearest" dns > server the next time it contacts yur dns servers. > so basically its not up to you. All NS records > are "the same" when viewed outside---all of them > are authoritative to your zone in the same, equal > way. >
yeah, NS records do not have preference or weigth values like that of MX mail records. and usually, dns clients querying your NS servers will just do round-robin. knowing that, you can make one of your NS server preferable (if you have control over them) by: a) giving the favorable NS server more IP addresses/aliases and announcing them too. so if you have two NS servers, giving the favorable one another 2 IP aliases should increase its round-robin probababilty from 50% to 75%. increasing the number of aliases is directly proportional to higher probability. in case of dns clients basing it on response times, be sure to make the faster NS server favorable. b) setting up a udp-proxy in front of your NS servers. then configure it to always use your favorable NS server and just resorting to the other ones when the favorable NS server goes down or gets overloaded. know that you can always the bend the rules =) pong -- Philippine Linux Users' Group (PLUG) Mailing List [EMAIL PROTECTED] (#PLUG @ irc.free.net.ph) Official Website: http://plug.linux.org.ph Searchable Archives: http://marc.free.net.ph . To leave, go to http://lists.q-linux.com/mailman/listinfo/plug . Are you a Linux newbie? To join the newbie list, go to http://lists.q-linux.com/mailman/listinfo/ph-linux-newbie
