From owner-freebsd-questions Mon Dec 24 11:18: 7 2001 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (okc-65-31-201-166.mmcable.com [65.31.201.166]) by hub.freebsd.org (Postfix) with SMTP id 786AD37B417 for ; Mon, 24 Dec 2001 11:17:58 -0800 (PST) Received: (qmail 33371 invoked by uid 100); 24 Dec 2001 19:17:54 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15399.32610.314825.24529@guru.mired.org> Date: Mon, 24 Dec 2001 13:17:54 -0600 To: Jim Freeze Cc: questions@freebsd.org Subject: Re: Smooth transition possible when switching ISP? In-Reply-To: <77889233@toto.iv> X-Mailer: VM 6.90 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ X-Delivery-Agent: TMDA v0.42/Python 2.1.1 (freebsd4) From: "Mike Meyer" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Jim Freeze types: > I have a web server on a box at home that uses > the cable provider @home. I am using granite canyon > as the name server provider. (The IP is dhcp but has > not changed for over a year.) I plan this month to > switch to DSL (and thus will get a new static IP). > Currently, both networks are active. I don't know anything about granite canyon, but the work has to happen on their end. If they are set up as a "dns for dynamic IP hosts" type deal, then just switching to the new IP address should do the trick. > It would be nice if I could limit that downtime. > > Can anyone give me some suggestions as the best way > to make this transition. Note the expiration time on the current DNS, then lower it to something short. Wait until after the old expiration time has passed. Change the DNS to use the new IP address. You can now raise the expiration time back to the old one. The "downtime" will be the shorter expiration time you used in the middle. Except, of course, that some people may have an IP cache that is ignoring the expiration time you set. You can't do much about them. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message