Black Hole Routing using the NULL interface

Leave a Comment / Cisco Router and IOS How To's / By

This How To covers something called Black Hole Routing using the NULL interface in Cisco IOS. The entire YouTube network went down in 2009, across the globe, for about two hours — thanks to a mistake made by an ISP in Pakistan. That mistake involved a black hole route accidentally distributed around the world. While […]

Black Hole Routing using the NULL interface Read More »