From owner-freebsd-isp Sun Dec 16 0:20:31 2001 Delivered-To: freebsd-isp@freebsd.org Received: from leaf.lumiere.net (leaf.lumiere.net [208.44.192.100]) by hub.freebsd.org (Postfix) with ESMTP id A235737B405 for ; Sun, 16 Dec 2001 00:20:29 -0800 (PST) Received: by leaf.lumiere.net (Postfix, from userid 1082) id D875BCD13; Sun, 16 Dec 2001 00:20:28 -0800 (PST) Date: Sun, 16 Dec 2001 00:20:28 -0800 From: Derrick John Klise To: Jeff Lasman Cc: freebsd-isp@freebsd.org Subject: Re: Using DNAT and DNS round-robin Message-ID: <20011216002028.A1264@leaf.lumiere.net> References: <196254713265.20011209213749@hostonfly.com> <3C1C270F.164076BA@nobaloney.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3C1C270F.164076BA@nobaloney.net>; from jblists@nobaloney.net on Sat, Dec 15, 2001 at 08:46:07PM -0800 Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Sat, Dec 15, 2001 at 08:46:07PM -0800, Jeff Lasman wrote: > Are you sure? I've been looking for a definitive answer in my DNS & > Bind book for about an hour now, and I'm still not certain . Any > page references welcome . IIRC, something like: monkey.example.net IN A 192.168.0.1 IN A 192.168.0.2 IN A 192.168.0.3 > And how about failure rollover? We'd like to offer clients > geographically dispersed hosting; there's a call for it since September > 11th showed everyone of the hazards of hosting at only one location. > But I don't think we can rely on short TTL; too many large ISPs seem to > ignore it . > Is there a way to handle high-availability strictly in DNS? Possibly; I'm unaware of one if there is, though. If you're not too worried about the TTL problem, you could set up a monitoring program to remove an entry from the rotation if it's corresponding address becomes unavailable, then add it when it comes back up. -- Derrick John Klise "I went into a general store, and they wouldn't sell me anything specific". -- Steven Wright To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message