[c-nsp] Peering + Transit Circuits

[Scott Granados]

If you’re not enabling URPF at the peering routers and edges how do you handle things like RTBH?

> On Aug 25, 2015, at 7:56 AM, Mark Tinka <mark.tinka at seacom.mu> wrote:
> 
> 
> 
> On 18/Aug/15 22:43, Nick Hilliard wrote:
> 
>> i'd advise being careful with this approach: urpf at ixps is a nightmare.
> 
> We don't generally do uRPF at exchange points, for the simple reason
> that the router is dedicated (meaning it does not carry a full table),
> and peers leaking your routes to the Internet (which breaks uRPF in this
> scenario) is a constant scenario.
> 
>    *sigh*
> 
> Mark.
> 
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