On the stability and diversity of Internet routes in the MPLS era
| Autor: | Ibrahim Jomhawy, Michael Rabinovich, Zakaria Al-Qudah, Mohammad Alsarayreh |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer Networks and Communications
computer.internet_protocol Computer science business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS 020206 networking & telecommunications Multiprotocol Label Switching 02 engineering and technology 01 natural sciences Set (abstract data type) 010104 statistics & probability Hardware and Architecture PlanetLab Modeling and Simulation Label switching Server Metric (mathematics) 0202 electrical engineering electronic engineering information engineering Key (cryptography) The Internet 0101 mathematics business computer Software Computer network |
| Zdroj: | Performance Evaluation. 138:102084 |
| ISSN: | 0166-5316 |
| Popis: | Stability and diversity of end-to-end routes are key properties of Internet that have a large effect on the design of networks and networked systems. As the Internet evolves and deploys new technologies, it is important to re-assess these properties in the face of the new realities. This paper evaluates the stability and diversity of Internet routes with emphasis on the impact of the widely deployed Multi-Protocol Label Switching (MPLS). In particular, we analyze two data sets: (1) high frequency (once per minute) traceroutes originating from a number of PlanetLab hosts to a set of destinations distributed around the Internet (random hosts extracted from the Alexa list of top-1M websites), and (2) traceroutes originating from a large number of Ripe Atlas probes to a number of hosts (mostly root DNS servers). We find that Internet routes are significantly less stable than previously reported, at least according to one common metric (the route persistence), and much more diverse. At the same time, these more frequent route changes do not translate to high variability of route-trip time (RTT) delays between hosts, as RTTs tend to stay similar across route changes. Notably, with regard to diversity, we show that higher diversity is likely due not to a real change in the Internet but rather to underestimation by previous studies. Finally, our assessment of MPLS role in increased path instability produced inconclusive results as MPLS appears to be a significant contributor in the Ripe Atlas data set but not in the Planet Lab data set. |
| Databáze: | OpenAIRE |
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