Internet
Internet tomography and topology modeling (BGP, IXPs, AS-level). We design routing protocols whose tables grow sub-linearly with network size.
Lines of work
Tomography
traceroute-like probes, analysis of measurement bias, and discovery of hidden MPLS tunnels.
AS-level topology and BGP
Modeling the autonomous-system graph, k-core decomposition of the Internet, and tracking CDNs in the network core.
Latin American IXPs
IXP deployment in developing countries and its impact on Quality of Service and traffic economics.
Standards (IETF)
IETF contributions (RFC 9198 (AURA), on standardizing unidirectional measurements) and proposals for sub-linear EGP routing. More on the IETF.
Flagship initiative
First IXPs of Bolivia and Paraguay (Internet Society)
We contributed to the design, deployment, and measurement of the first national Internet Exchange Points (IXPs) of Bolivia and Paraguay, under the Internet Society program. The work combines active network measurement with an economic and regulatory analysis of how IXPs change Internet access in developing countries. In collaboration with Dr. Hernán Galperin (USC Annenberg, formerly Universidad de San Andrés).
Related projects
CDNs en el núcleo de Internet (TMA 2018)
How content providers became central to the AS ecosystem after the rise of private CDNs.
RFC 9198 (AURA)
Advanced Unidirectional Route Assessment, IETF Proposed Standard (IPPM working group, 2022).
Selected publications
- DetailsA First Look at the Latin American IXPsACM SIGCOMM Computer Communication Review, Mar 2020
- DetailsStudying the evolution of content providers in IPv4 and IPv6 internet coresComputer Communications, 2019
- DetailsThe Atlas Vision of IPv6 in Latin America: Topology and LatencyIn Proceedings of the 10th Latin America Networking Conference, 2018
- DetailsA new intrinsic way to measure IXP performance: an experience in BoliviaarXiv, May 2015
- DetailsK-core decomposition of Internet graphs: hierarchies, self-similarity and measurement biasesNetworks and Heterogeneous Media, 2008
