Re: best practives multi-homed BGP 2 physical locations
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@gmail.com> To: Philip Lavine <source_route@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_route@yahoo.com> wrote: Is there any best practices documentation on how to run BGP multihoming accross two phyiscally seperated sites.
so, say you end up with a /24 and your ASN split up your /24 into hq-/25 and colo-/25 from colo: 1) announce /24 as a standard adv 2) announce colo-/25 with *no-export* community set from hq: 1) announce /24 as a standard adv 2) announce hq-/25 with *no-export* community set Run iBGP over a dedicated link b/w colo and hq (I don't like allow-as in! but it is another option) ./Randy --- On Thu, 6/14/12, Philip Lavine <source_route@yahoo.com> wrote:
From: Philip Lavine <source_route@yahoo.com> Subject: Re: best practives multi-homed BGP 2 physical locations To: "Mick O'Rourke" <mkorourke@gmail.com> Cc: "nanog@nanog.org" <nanog@nanog.org> Date: Thursday, June 14, 2012, 3:33 PM 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@gmail.com> To: Philip Lavine <source_route@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_route@yahoo.com> wrote:
Is there any best practices documentation on how to run BGP multihoming accross two phyiscally seperated sites.
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@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@gmail.com> To: Philip Lavine <source_route@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_route@yahoo.com> wrote:
Is there any best practices documentation on how to run BGP multihoming accross two phyiscally seperated sites.
participants (3)
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david peahi -
Philip Lavine -
Randy