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<p dir="auto">Buenas,</p>
<p dir="auto">Comparto por aquí un par de artículos interesantes. El primero trata de la detección de cortes e incidencias en la infraestructura utilizada por los IXPs a través de la observación de información de enrutamiento, en concreto de las comunidades BGP. El segundo es un análisis regional del ecosistema de peering publico y privado en las cinco regiones de Internet.</p>
<p dir="auto">Saludos,<br>
Gael</p>
<p dir="auto"><strong>Detecting Peering Infrastructure Outages in the Wild</strong></p>
<p dir="auto">Peering infrastructures, namely, colocation facilities and Internet exchange points, are located in every major city, have hundreds of network members, and support hundreds of thousands of interconnections around the globe. These infrastructures are well provisioned and managed, but outages have to be expected, e.g., due to power failures, human errors, attacks, and natural disasters. However, little is known about the frequency and impact of outages at these critical infrastructures with high peering concentration.</p>
<p dir="auto">In this paper, we develop a novel and lightweight methodology for detecting peering infrastructure outages. Our methodology re- lies on the observation that BGP communities, announced with routing updates, are an excellent and yet unexplored source of information allowing us to pinpoint outage locations with high accuracy. We build and operate a system that can locate the epi- center of infrastructure outages at the level of a building and track the reaction of networks in near real-time. Our analysis unveils four times as many outages as compared to those publicly reported over the past ve years. Moreover, we show that such outages have signi cant impact on remote networks and peering infrastructures. Our study provides a unique view of the Internet’s behavior under stress that often goes unreported</p>
<p dir="auto"><strong>A Region-Centric Analysis of the Internet Peering Ecosystem</strong></p>
<p dir="auto">The Internet is transitioning from a hierarchical structure to a flat structure where more and more networks participate in public peering at IXPs and private peering at interconnection facilities to increase performance and reduce transit costs. PeeringDB is a public online database containing information about IXPs, facilities, and networks participating at IXPs and facilities. In this paper, we perform an in-depth analysis of the PeeringDB data to gain an understanding of the public and private peering ecosystems in the five regions of the world (i.e., North America, Europe, Asia Pacific, Latin America, and Africa). We study how IXPs, facilities, and peering networks are distributed across the five regions. We also investigate how distribution of network business type, peering policy, and traffic level varies across the five regions. Our analysis provides a snapshot of the current state of the peering ecosystems in the five regions of the world and reveals the similarities and differences between these peering ecosystems.</p>
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