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_ro...@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 <mkorou...@gmail.com> > To: Philip Lavine <source_ro...@yahoo.com> > Cc: "nanog@nanog.org" <nanog@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_ro...@yahoo.com> wrote: > > Is there any best practices documentation on how to run BGP multihoming > accross two phyiscally seperated sites. > > >
