Date: Sun, 23 Apr 2006 12:21:11 -0400 From: Chuck Swiger <cswiger@mac.com> To: "Chad Leigh -- Shire.Net LLC" <chad@shire.net> Cc: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: bind and multiple a records Message-ID: <444BA977.3020607@mac.com> In-Reply-To: <DBFE4F9D-650D-45AF-A4DD-434FC29EC02F@shire.net> References: <DBFE4F9D-650D-45AF-A4DD-434FC29EC02F@shire.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Chad Leigh -- Shire.Net LLC wrote: > On FreeBSD 6.0 with bind9, if I define a host to have multiple A > records, such that some IP addresses are listed more than once, for > example: [ ... ] > Will those addresses listed more than once show up more often as the > "answer" to name server requests (or more often as the first address > since it lists all addresses in response alternating the order)?? The last I'd heard, BIND implemented multiple-RR round-robin'ing but not relative weighting if a RR is specified several times. Note that you're probably never going to achieve fine-grained control by using DNS load-balancing anyway, since client-side caching behavior is more significant than what your side does. If you actually need load-balancing to do something, you're better off implementing it between a front-end DTS box (an Alteon or something like that if need be) and a bunch of back-end servers which actually implement meaningful load-balancing based on the workload of your back-end servers... -- -Chuck
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?444BA977.3020607>