Re: Blackhole Routes

[Suresh Ramasubramanian <suresh () outblaze com>]

Abhishek Verma wrote:
> There are ways to add static routes that can be blackholed. I can
> understand the utility of such routes if those are installed in my
> forwarding table. What bewilders me is why would anyone want to
> advertise "blackhole" routes using say, BGP?
>
> Is it only to prevent some sort of DoS attacks or are there other uses
> also of advertising black hole routes?

Look at the way the MAPS RBL started.

Anybody else who trusts your judgement of what traffic to blackhole can 
take a bgp feed of the blackhole routes and use it.