LIFEGUARD
Ethan Katz-Bassett, Colin Scott, David Choffnes, Ítalo F. S. Cunha, Vytautas Valancius, Nick Feamster, Harsha V. Madhyastha, Thomas E. Anderson, Arvind Krishnamurthy · 2012
The Internet was designed to always find a route if there is a policy-compliant path. However, in many cases, connectivity is disrupted despite the existence of an underlying valid path. The research community has focused on short-term outages that occur during route convergence. There has been less progress on addressing avoidable long-lasting outages. Our measurements show that long-lasting events contribute significantly to overall unavailability.