Failover solution using BGP

Chris Ely cely at
Wed Dec 31 00:13:49 UTC 2008

Conditional advertisements might be what you're looking for:

Chris Ely

On Wed, 31 Dec 2008, Naveen Nathan wrote:

> Hi,
> I would appreciate insight and experience for the following situation.
> I have a client that would like to announce a /18 & /19 over BGP in
> Sacramento and LA, us being the second location in LA. Our location
> will be a failover location incase Sacramento goes down.
> They want failover for extreme cases when they're completly down in
> Sacramento. They have strict requirements so that traffic to their blocks
> should exclusively go to Sacramento or LA.
> This seems difficult to automate and they are aware of this. They will
> contact their provider to stop announcing the blocks and subsequently
> contact us to announce their routes.
> I am wondering is there a better way to approaching the situation
> without resorting to announcing the routes when the client calls us
> and tells us to failover. This seems to be the inherent problem aswell
> because the customer wants this to be a manual process.
> -- 
> Naveen Nathan
> To understand the human mind, understand self-deception. - Anon

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