best practives multi-homed BGP 2 physical locations

Fri Jun 15 01:40:11 UTC 2012

I'm fortunate to have a /16, and advertise 2 /18s from the primary, and 4
/17s from the backup collo, /16 from both with AS Prepend on backup /16,
and depend on BGP longest prefix route selection to create symmetric
Internet routing back to my locations. I run IBGP between geographically
diverse locations internally, over an L2 VLAN extended over a GiGE dot1q
trunk. Internet-facing load-balancers select the best server from
distributed server farms spread across the 2 sites.
I think this is a fairly standard configuration.

On Thu, Jun 14, 2012 at 3:33 PM, Philip Lavine <source_route at yahoo.com>wrote:

> Easy part:
> I need to provide my users acces to the internet from my HQ site via a
> local Internet connection or via a colo.
>
> Hard part:
> I also need to provide incoming access to hosted apps (HTTP, FTP, SMTP)
> from either location, so if the colo internet connection goes down the
> traffic can re-route to the HQ server farm and visa versa.
> I am in the process of purchasing an AS and ip space. Is it advisable to
> use the same IP space at both locations and run iBGP over a dedicated L2
> connection between the sites.
>
> P
>
>
> ________________________________
>  From: Mick O'Rourke <mkorourke at gmail.com>
> To: Philip Lavine <source_route at yahoo.com>
> Cc: "nanog at nanog.org" <nanog at nanog.org>
> Sent: Thursday, June 14, 2012 2:48 PM
> Subject: Re: best practives multi-homed BGP 2 physical locations
>
>
> As in
> - use of multi or single AS?
> - private, vpn or other dci?
> - etc
> What's the purpose of the site? Or what end result are you trying to
> achieve?
>
> On Jun 15, 2012 6:04 AM, "Philip Lavine" <source_route at yahoo.com> wrote:
>
>  Is there any best practices documentation on how to run BGP multihoming
> accross two phyiscally seperated sites.
> >
>