Title :
Impact of provider failures on the traffic at a university campus
Author :
Duarte, Rodrigo ; Vieira, Alex B. ; Cunha, Italo ; Almeida, Jussara M.
Author_Institution :
Univ. Fed. de Juiz de Fora, Juiz de Fora, Brazil
Abstract :
In this paper we characterize the impact of failures in Brazil´s national research network (RNP) on traffic at a large client university. We analyze reachability disruptions, caused by failures of RNP´s interdomain links, that block all international traffic. We also analyze performance disruptions, caused by simultaneous failure of multiple RNP intradomain links, which result in congestion and performance degradation. We study the impact of disruptions on traffic, application mix, and user behavior. Our results show that users adapt their behavior when some applications become unavailable and when network performance degrades. For example, users tend to migrate to Youtube when Facebook becomes unavailable during reachability disruptions; similarly, users migrate to Facebook when congestion during performance disruptions severely degrade Youtube experience. We also correlate the impact of disruptions to network topology and show that performance during a performance disruption depends on the location and importance of failed links.
Keywords :
computer network performance evaluation; computer network reliability; educational institutions; reachability analysis; social networking (online); telecommunication congestion control; telecommunication links; telecommunication network topology; telecommunication traffic; Brazil national research network; Facebook; Youtube; application mix; international traffic block; large-client university; multiple RNP intradomain link failure; network performance; network topology; performance degradation; performance disruption analysis; reachability disruption analysis; traffc congestion; university campus; user behavior; Degradation; Facebook; Google; IP networks; Internet; Throughput; YouTube; Network failures; passive measurements; performance degradation; user behavior;
Conference_Titel :
IFIP Networking Conference (IFIP Networking), 2015
Conference_Location :
Toulouse
DOI :
10.1109/IFIPNetworking.2015.7145327