3 ms·
Cogent and Level3 weren't filtering their own customer. This is what happens when large companies say prefix list updates / validation is too much of a burden a
by kitteh 7y ago
Cogent and Level3 weren't filtering their own customer. This is what happens when large companies say prefix list updates / validation is too much of a burden and allow customers to run bareback BGP. That said, Cogent is going to be doing RPKI on customers soon so that's good.
As for Level 3 the world wonders.
- jlgaddis 7y agoRostelecom (AS12389) is directly connected to Level3 (AS3356) and announced the hijacked routes to them but Level3 filtered them out. But... AS12389 announced them to Rascom (AS20764), who accepted them and sent them on to Cogent (AS174), who accepted them and propogated them on to Level3 (AS3356), who, unfortunately, then accepted them from Cogent. The AS path would've been much longer than if Level3 had accepted them directly from AS12389 so, at the least, the actual effects of the hijacking weren't as bad as they could have been.