From owner-freebsd-questions Sun Apr 29 8:27:45 2001 Delivered-To: freebsd-questions@freebsd.org Received: from fbsd.bosa.ca (cr1003901-a.rct1.bc.wave.home.com [24.113.37.99]) by hub.freebsd.org (Postfix) with ESMTP id E4EB637B43E for ; Sun, 29 Apr 2001 08:27:42 -0700 (PDT) (envelope-from kulraj@bosa.ca) Received: from ska1 (h207-230-227-196.dccnet.com [207.230.227.196]) by fbsd.bosa.ca (Postfix) with SMTP id AD053158EB9; Sun, 29 Apr 2001 09:34:54 -0700 (PDT) Message-ID: <002901c0d0bd$e8466de0$64c8a8c0@asknet.com> From: "Kulraj Gurm (bosa.ca account)" To: "Ken Bolingbroke" , "Ted Mittelstaedt" Cc: References: Subject: Re: Redundant Internet connections Date: Sun, 29 Apr 2001 08:06:02 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > However, if ISP A dies on Wednesday, ISP B takes over the slack. If ISP B > dies on Friday, ISP A is handling things anyway. True, there's the chance > that both ISPs will die on the same day, but the likelihood of that is > definitely much lower than the liklihood of being without access > altogether if you have only ISP A. It doesn't guarantee 100% uptime, but > it does get a lot closer at much less expense than it would cost for a > 99.95% SLA. I am pondering taking a second T1 with a different telco for redundancy, and your discussion has so far been interesting. I am a little confused however; maybe just my lack of understanding, but all your discussion on redundancy has been focussed on out bound traffic - where I can conceptually see it working. But what are the DNS implications? We have numerous clients; and many of them have numerous domains. I generally assign an IP per client and virtual host as many sites as they want on the single IP. This is all through one telco at the moment. When a second telco enters the picture, and I get a different IP range assigned to the new T1. When the first network is down - all hosted sites will still be inaccessible. What would be the solution to this scenario. Regards, Kulraj Gurm To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message