best practives multi-homed BGP 2 physical locations

Randy randy_94108 at yahoo.com
Thu Jun 14 20:22:35 CDT 2012


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 at yahoo.com> wrote:

> From: Philip Lavine <source_route at yahoo.com>
> Subject: Re: best practives multi-homed BGP 2 physical locations
> To: "Mick O'Rourke" <mkorourke at gmail.com>
> Cc: "nanog at nanog.org" <nanog at 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 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.
> >
> 



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