On Nov 13, 2013, at 8:16 PM, Adam Vitkovsky <[email protected]> wrote:

> Though you'd still have to use table-map in order avoid installing these 
> valid prefixes into RIB.

I guess I'm thinking of a scenario with a dedicated blackhole triggger-router, 
iBGP from the trigger routers to routers within my own network where I want to 
drop traffic, and eBGP multi-hop from the trigger route to each of the 
appropriate routers on the upstream transit networks.  No need to worry about 
the RIB on the trigger router, and community-based tagging and filtering can 
ensure that these particular blackhole routes never make it into my own routers 
in my own iBGP.

-----------------------------------------------------------------------
Roland Dobbins <[email protected]> // <http://www.arbornetworks.com>

          Luck is the residue of opportunity and design.

                       -- John Milton


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