[c-nsp] Current BGP BCP for anchoring and announcing local prefixes

ML ml at kenweb.org
Tue Mar 16 22:26:35 EDT 2010


On 3/16/2010 9:19 AM, Drew Weaver wrote:
> No to thread Hijack, but how do you guys handle injecting /32s for null/blackhole into your upstream providers?
> 
> Using a tag on the static route? with a route-map that matches the tag? which then adds a community?
> 
> thanks,
> -Drew

*If* your upstream allows you to announce longer than /24.  Then a
static route + tag is a nice way to tack on extra communities in a
route-map to signal upstream that you want them to nullroute.



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