Henning, I agree with you on this. However, I was looking at this from the SMTP and outgoing angles (which IMHO is a bit better designed for this scenario than HTTP, SSH, or other services). Obviously you'd want BGP for the Web or other services (and if you've got 2 ADSL lines, you're probably hosting a good chunk of that at a web host that hopefully has it).
If someone has 2 ADSL lines they're bonding, chances are they're not going to want BGP set up (most people I know would have at least a /24, 2 T1s, and a good ISP). Will most providers even let you set up BGP if you're running less than a /24? My experience has been that most ADSL providers don't provide these services, but the leased line providers do. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Henning Brauer Sent: Thursday, December 27, 2007 12:42 PM To: misc@openbsd.org Subject: Re: Merging 2 ADSL lines * Mitch Parker <[EMAIL PROTECTED]> [2007-12-27 18:34]: > You don't need bonding for incoming traffic :). > > PF will take care of the outbound load-balancing for you (and there's > an example pf.conf that addresses this in Absolute OpenBSD) if > configured correctly. > > If you have DNS set up right, you don't need bonding for incoming > traffic. That's what MX records and priorities are for WRT SMTP, and > PF and multiple A records are for WRT everything else. > > No provider you've seen will allow that because it's not necessary to > do so due to the fact that DNS can already handle it with a minimum of > work. that is a hobbyist solution that might work ok if you don't actually care for reliability etc - especially with the mutiple A records, when one line is down you won't be reachable for about half of of the people who would want to reach you. the real solution is of course bgp or two lines which go to the same provider IP-wise and he does his share in balancing and failover. -- Henning Brauer, [EMAIL PROTECTED], [EMAIL PROTECTED] BS Web Services, http://bsws.de Full-Service ISP - Secure Hosting, Mail and DNS Services Dedicated Servers, Rootservers, Application Hosting - Hamburg & Amsterdam
