Date: Mon, 15 Jan 2001 07:58:01 -0800 (PST) From: Jason Fesler <jfesler@gigo.com> To: Dave Wilson <davew@sai.co.za> Cc: Matthew Horoschun <matthew@actweb.net>, <freebsd-isp@FreeBSD.ORG> Subject: RE: DNS redundancy & load balancing Message-ID: <Pine.BSF.4.30.0101150754390.909-100000@heaven.gigo.com> In-Reply-To: <NEBBJFIIGKGLPEBIJACLAEJGCMAA.davew@sai.co.za>
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> Indeed but clients have their primary DNS server set to our primary, thus if > our primary goes down no resolution takes place. > Clients have a their seconday DNS set to our secondary DNS, but we've found > that often M$ machines never even try looking at their secondary DNS server. > Any ideas ? Move your DNS servers to different IP addresses, ones that are not published. Assign virtual IP addresses (the published ones). If you have a DNS failure or host failure, you can remove (if needed) the published virtual IP, and put it on as a second virtual IP on the remaining host. If you're good, you can even automate this with creative use of a third host for monitoring and administering the IP changes. OF course, you can also just solve this with hardware, ala Alteons and their like, but most ISP's are too cheap. [Been there, done that, got screwed on the tshirt. ;-)] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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