One final consideration I forgot to mention, make sure you have a beefy router. Depending on your BGP configurations, if you want to receive all routes from the internet, that can seriously bog down a low end router. I'm not saying you can't get by with a low-end router, just make sure your router can handle the results of your BGP configs.

--Todd

-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Todd Reed Sent: Thursday, January 05, 2006 7:01 PM To: CentOS mailing list Subject: RE: Linux HA may not be the best choice inyoursituation. [CentOS]High Availability using 2 sites

In a nutshell and very first of all, you need at least 2 internet connections. Those ISP must be willing to setup BGP peering between your routers and theirs. Once that agreement has been made, you need to get their AS Numbers and submit the ASN request located on ARIN's website (http://www.arin.net). After some paperwork and money exchanges, ARIN assigns you an AS number. At that point, you can configure the BGP peering. There's more details to it, but that's what I went through in a nutshell. ARIN has a pretty good flowchart of their process located at http://www.arin.net/education/asn_process/index.html

--Todd

-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Tim Edwards Sent: Thursday, January 05, 2006 6:33 PM To: CentOS mailing list Subject: Re: Linux HA may not be the best choice in yoursituation. [CentOS]High Availability using 2 sites

Bryan J. Smith wrote:

Exactly! That's why I keep both agreeing _and_ dismissing many suggestions, because most are only feasible _if_ they are for a corporate intranet. Most are too arbitrary for the Internet.

I believe the original poster was talking about the Internet, but I could be wrong.

Yes I am talking about the Internet, not an Intranet. Thanks for all your replies, especially Brian, they've helped me see more clearly what the options are. I'd already given up on Round Robin or any other kind of DNS 'solution' before I posted, after reading this: http://homepages.tesco.net./~J.deBoynePollard/FGA/dns-round-robin-is-use less.html

I don't think the difficulties and expense of getting an AS number and setting up BGP to work with our ISP will be worth it, but I'm not sure -

what steps exactly are involved in doing that?