Re: BCP38 For BGP Customers

[William Herrin <bill () herrin us>]

On Thu, Nov 10, 2022 at 10:08 AM Grant Taylor via NANOG <nanog () nanog org> wrote:
> I wonder if Feasible Path uRPF or Enhanced Feasible Path uRPF might help
> the situation.  However I suspect they both suffer from the FIB != RIB
> problem and associated signaling.

Hi Grant,

That's a fairly good way to think about it. BGP knows -a- path and
sometimes it knows more than one but it simply doesn't have signal on
the totality of feasible paths for a particular IP address. No
distance-vector protocol can.

Regards,
Bill Herrin


-- 
For hire. https://bill.herrin.us/resume/