Hi Stephen,
> I used to be a quality control engineer in my career, so I have a > question to ask from the perspective of a QC guy: what is the Best > Practice for minimizing, if not totally preventing, this sort of > problem? Is there a "cookbook" answer to this? > As suggested by Job in the thread above, - deploy RPKI based BGP Origin validation (with invalid == reject) - apply maximum prefix limits on all EBGP sessions - ask your router vendor to comply with RFC 8212 ('default deny') - turn off your 'BGP optimizers' --> You actually don't need that at all. I survived without any optimizer. Aslo, read RFC7454 and join MANRS :) Regards, Aftab Siddiqui