Computer Networking @Ecole Polytechnique
Research Internship Proposal (PDF VERSION HERE). In front of the proliferation of Network Intrusion attacks leveraging more and more sophisticated techniques, incorporation of Artificial Intelligence and Machine Learning is becoming the de facto standard to secure Network infrastructures. Research literature…
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Research Internship Proposal (PDF VERSION HERE). Wireless networks are more and more pervasive and ubiquitous in our society where they enable a large variety of applications for our daily lives, while still facing challenges that require them to constantly evolve….
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Last Thursday, November 16th, we had the conference AIvolution, about AI and digital technologies in the EU, in the Brussels site of the European Parliament (EP). I had the pleasure of organizing and chairing the conference with MEP Eva-Maria Poptcheva…
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Just arrived from Montreal (Canada), where I presented the paper “On the Dynamics of Single-Orbit Requester-Provider Systems“, in the 26th International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (ACM MSWiM’2023). MSWiM is a A-ranked, selective (~18%…
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Use of milimeter wave frequency band (mmWave, from 30 to 300 GHz) is one main technological novelties of 5G and 6G mobile data communications. Exploitation of mmWave spectrum enables substantially larger bandwidth and datarates, but such high-frequency bands have a…
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All good things must come to an end … and so, after about 3 years of scientific collaborations, a global pandemic, and 10 or so scientific papers published or in the pipeline, my PhD student Zhiyuan Yao is preparing to…
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Intro I am very excited to present this work, published in the IEEE Access journal, which presents an alternative to standard AI workload acceleration mechanisms at the edge (hardware acceleration, model compression, cloud off-loading). This work, in collaboration with Cisco,…
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Intro Glad to announce that, together with my friend at Princeton University, I have pushed a paper on multi-agent reinforcement learning algorithms for load balancing problems to CIKM. Extending based on the paper “Reinforced Workload Distribution Fairness” which we have…
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Intro Extending based on the paper Efficient Data-Driven Network Functions which I will physically present in the 30th International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems in Nice, France, we have developed a platform…
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Intro I have been working for a couple of years on the subject of making load balancers in data center networks more “intelligent”–in the sense of making appropriate task allocation according to both the dynamic server load states and the…
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Throughout the whole summer vacation, I have been waiting for this moment. Finally! My collaboration with my friend Zihan, who is pursuing his PhD at Princeton University, is acknowledged and accepted in the main conference of the 36th Conference on…
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Intro Extending based on the paper Towards Intelligent Load Balancing in Data Centers which we have presented last year at the 5th Workshop on ML for Systems at NeurIPS 2021, we have created a framework that allows for developing and…
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Conferences are in person once again, so I could go to Danemark to present my work on secure messaging schemes at the ESORICS conference. ESORICS has been evaluated as an A-level conference and is seen as a leading European conference…
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Intro The 35th Conference on Neural Information Processing Systems (NeurIPS) — an A* ranking conference on Machine Learning (ML) — took place at ZoomVille in December this year, right before the Xmas holiday. It was a great place to…
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Introduction The Open Web Application Security Project (OWASP) has identified Broken Object Level Authorization (BOLA), also known as Insecure Direct Object References (IDOR), as the most common and severe security vulnerability in today’s APIs. BOLA occurs when an authenticated user…
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It’s September … also known as “Academic New Year”: new classes, new students … and, once in a while, also a new colleague. This year, I’m thrilled to welcome dr. Kevin Jiokeng, who will be joining my group as an…
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This morning, Jean-Charles from Cisco France stopped by Ecole Polytechnique, to give a master-class on Cybersecurity for our 2nd year students. It’s always entertaining when Jean-Charles is lecturing — as well as frightening, when in 2019 we’re reminded of both…
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During a quick visit in France, prof Rodney Van Meter from KEIO University, found time to come to Ecole Polytechnique to give a quantum computing tutorial, to present some of his latest research within that field — and to help…
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Beyond the transport of uncompressed video over IP networks, defined in standards such as ST2022-6, the ability to build software-based Video Processing Functions (VPF) on commodity hardware and using general purpose Operating Systems is the next logical step in the…
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A derivative of AODV, denoted LOADng, is proposed for use in very constrained environment, sacrificing a number of features from AODV for the benefit of smaller control messages and simpler processing logic. Among these sacrifices is intermediate route replies. This…
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Network load-balancers generally either do not take application state into account, or do so at the cost of a centralized monitoring system. This paper introduces a load-balancer running exclusively within the IP forwarding plane, i.e. in an application protocol agnostic…
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Oh, look, an interview with our own Juan-Antonio Cordero Fuertes, on the IoT, on Security, and on the Digitised Society — well worth a read for an informed perspective on societal impacts of those 21th century technologies: Interview in English…
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The first snow of 2019 is upon us – which, in the Paris region means mayhem on the roads, already dense with traffic on a good day. At Ecole Polytechnique, however, it merely means a photogenic view, when walking to,…
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This document analyzes common security threats of the Neighborhood Discovery Protocol (NHDP) and describes their potential impacts on Mobile Ad Hoc Network (MANET) routing protocols using NHDP. This document is not intended to propose solutions to the threats described. IETF…
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Data delivery across a multi-hop low-power and lossy networks (LLNs) is a challenging task: devices participating in such a network have strictly limited computational power and storage, and the communication channels are of low capacity, time-varying and with high loss…
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This specification describes an extension to the Optimized Link State Routing Protocol version 2 (OLSRv2) to support multiple routing topologies, while retaining interoperability with OLSRv2 routers that do not implement this extension. This specification updates RFCs 7188 and 7631 by…
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After having played around with the simulator…. ….and with its smaller sibling… We finally got our two NetFPGA SUME delivered, fresh from the manufacturer. Very excited – let the science begin 😉
Public community Mobile Ad Hoc NETworks (MANETs), such as the “Funkfeuer” or “Freifunk” networks, scale up to several hundreds of routers, connecting users with each other, and with the Internet. As MANETs are typically operated over wireless channels (e.g. WiFi),…
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It’s always wonderful when our alumni returns, and talk about their work — and on how their careers took shape after graduating.
Unsurprisingly, Gaetan Feige, from Cisco France, is killing it at Ecole Polytechnique, talking Open Innovation and Co-Innovation to our Executive Masters students. Incredibly interesting to hear how he, and Cisco, untertakes, co-innovation and open innovation as part of the Cisco…
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(The paper ended up getting accepted, fwiw)
Together with my students, Benoit Pit–Claudel (X15) and Yoann Desmouceaux (X11), as well as my colleague Mark Townsley, and my good friend Pierre Pfister (X08), I have committed a paper entitled “Stateless Load-Aware Load Balancing in P4” — part of…
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Jitter is a small, random variation of timing before message emission that is widely used in non-synchronized wireless communication. It is employed to avoid collisions caused by simultaneous transmissions by adjacent nodes over the same channel. In reactive (on-demand) routing…
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Jittering (a small, random variation in timing of control message emission) is widely used in protocols for wireless communication, in order to avoid simultaneous packet transmis- sions over the same channel by adjacent nodes in the network. Used for both…
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Gaetan touched on a great many topics, from the necessity for a company such as Cisco to engage with co-innovation, over the activities of the Cisco Paris Innovation and Research Laboratory (PIRL), through methodologies for co-innovation — and to a…
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The final part of today’s symposium has “Entrepreneurship, Innovation and Co-Innovation” as overarching theme, with Serge Chanchole, director of the Innovation Center at Ecole Polytechnique kicking off the afternoon by presenting the acceleration program for very early-stage startups. Also presenting…
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The 2nd talk after lunch at the IoT & Cybersecurity mini-symposium was by Francois Morain with “WannaCry: a typical modern attack” – including an interesting (historical) taxonomy of attacks Of course, Francois Morain could not resist either “Only those really old…
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First talk after lunch at the IoT and Cybersecurity mini-symposium was Juan Antonio Cordero Fuertes challenging us with “Rebuild but don’t break: the challenge of content centric networking” — touching on the challenge of evolving the core Internet infrastructure, on…
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Reviewing state-of-the-art, and introducing our students to some of his own work on application-agnostic, stateless, load-aware load balancing using IPv6 Segment Routing.
A trip down memory lane of “the grid in France today” — and an overview of the technologies currently being deployed (including Linky)
Solutions for mobile ad hoc routing have matured over the last decade. Building atop these foundations, new challenges are set for MANETs, such as integration in the Internet core. On this topic, this paper designs and evaluates MPR-OSPF, an extension…
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Heterogeneous networks combining both wired and wireless components – fixed routers as well as mobile routers – emerge as wireless mesh networks are being deployed. Such heterogeneity is bound to become more and more present in the near future as…
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This paper analyses the impact of jitter when applied to route discovery in reactive (on-demand) routing protocols. In multi-hop non-synchronized wireless networks, jitter—a small, random variation in the timing of message emission—is commonly employed, as a means to avoid collisions…
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Many protocols for Mobile Ad-hoc Networks propose construction of routes reactively using flooding. The advantage hereof is that no prior assumption of the network topology is required in order to provide routing between any pair of nodes in the network….
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This paper proposes an extension to the “LLN On-demand Ad hoc Distance-vector Routing Protocol – Next Generation” (LOADng), for efficient construction of a collection tree for data acquisition in sensor networks. The extension uses the mechanisms from LOADng, imposes minimal…
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This week marked the departure of Colonel Bernard Tourneur from his function as “Chef de Corps” — roughly speaking, that is the position of commanding officer for all of our students (a majority of whom are junior officers during their…
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It’s summer…which means that while our engineering and graduate students are leaving campus, we’ve got an occasion to spend important quality time with our PhD students and colleagues, and make (attempts at) leap and bounds on our scientific production ……
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It’s summer…which means that while our engineering and graduate students are leaving campus, a different population takes over — and yes, that in addition to our campus wildlife: This week, Ecole Polytechnique is playing host to a high-school-science-camp — roughly…
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The Ecole Polytechnique Innovation Center (affectionally known as DrahiX) is recruiting its 8th crop of start-ups for its acceleration program (affectionally known as X-Up) — an excellent opportunity to be accompanied in taking your nascent start-up to the next level,…
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… where the 2nd year engineering students developed and demonstrated a multi-player, Tron-inspired, on-line game. Good job gals and guys …
Mobile Ad hoc NETworks (MANETs) are leaving the confines of research laboratories, to find place in real-world deploy-ments. Outside specialized domains (military, vehicular, etc.), city-wide community-networks are emerging, connecting regular Internet users with each other, and with the Internet, via…
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After what seemed to be an eternity (but, which really was just short of two months total) we got our first NetFPGA — just in time for us to get familiar with it, before starting a student project (a “PSC”)…
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Very interesting to learn about the process “from idea to successful start-up”, as exemplified through numerous success-stories having gone through the Ecole Polytechnique Accelerator / Incubator program. To see the different prototyping and early-stage manufacturing facilities, available to accelerate and…
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Best of luck to all the hopeful, at the Ecole Polytechnique competitive entrance exams!
Recent trends in Wireless Sensor Networks (WSNs) have suggested converging to such being IPv6-based. To this effect, the Internet Engineering Task Force has chartered a Working Group to develop a routing protocol specification, enabling IPv6-based multi-hop Wireless Sensor Networks. This…
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We investigate broadcasting in mobile ad-hoc networks (MANETs). We define broadcasting as being the process of delivering one packet, originated at one node, to (ideally) all other nodes in the MANET. We present specific problems related to broadcasting in MANETs,…
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In this paper, we propose an extension to the Optimized Link State Routing (OLSR) protocol, a proactive link-state routing protocol optimized for mobile ad-hoc networks, in-troducing temporal partial topology as a mechanism for re-ducing control traffic overhead. The extension is…
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Routing protocol is a critical component of Low-power and Lossy Networks for Smart Grid. The protocols are used for data forwarding, which includes data acquisition, information dissemination, etc. This paper evaluates two main routing protocols used for Low-power and Lossy…
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Recent trends have suggested convergence to Wireless Sensor Networks (WSNs) becoming IPv6-based. To this effect, the Internet Engineering Task Force has chartered a Working Group to develop a routing protocol specification, enabling IPv6-based multi-hop WSNs. The current effort of this…
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…in the middle of a densely packed, and intense, 2-week visit to Japan. A short trip from Tokyo is the lush and green SFC campus of KEIO University — where I’m spending the afternoon visiting professor Rodney Van Meter and…
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While Paris is suffering from one of the coldest winters in the decade (Yesterday was pretty – today was pretty hard…), we are welcoming new members in the team. In the beginning of 2018 Wen Congmin, joins us for her…
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blog, Internships, IoT, LoRa, News
During my lunch break today, I tried to glean what “news for nerds – stuff that matters” had happened lately — but, when trying to access slashdot.org, I was met with this: While I, admittedly, do not know what infrastructure…
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The second round of admissions for the Ecole Polytechnique Graduate Degree programs in IoT, AI, Big Data for Business, Cybersecurity, Energy Management, Economics, and Smart Cities, is coming up on March 18. With limited space in each of the programs,…
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The IoT – the Internet of Things – is among the focus areas at Ecole Polytechnique, and one where we offer various educational programs, as part of our (traditional, and very French) engineering curriculum, and as a 2 year international,…
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Winter has not quite left Ecole Polytechnique yet – though weather isn’t hitting as hard as 2 weeks ago, it’s still keeping campus looking pretty…
One final reminder: Tomorrow is the last chance for submitting your candidature for a faculty position at Ecole Polytechnique: two professor position, one assistant professor position, and one (tenure-track) assistant professor position are available, as well as a couple of…
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One of our research activites is “quantifying and improving LoRa”, and we’ve published some interesting results in the past on that topic, based on some analytical — and, a lot of experimental — data. We love experimental work, but sometimes…
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Colleagues, IoT, Jiazi Yi, LoRa, networking, Ns3, Research, Simulation
My colleagues Jiazi, Juan, and I, just finished the final editorial bits of process on a new paper “Use ’em or Lose ’em: On Unidirectional Links in Reactive Routing Protocols”, published in Elsevier Ad Hoc Networks – and with the paper…
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Just a quick reminder that the deadline for applying for faculty positions in Cyber-Security, Cyber-Physical Systems, and AI, is coming up in one short week. Here’s the direct link for submitting your candidature. Here’s a description of the different positions,…
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Saturday morning, after a long (and, very constructive) process, came the long-awaited email from the IEEE: our paper “6LB: Scalable and Application-Aware Load Balancing with Segment Routing” was definitely accepted for publication in the IEEE Transactions on Networking. The paper is…
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….maybe that title needs a wee bit of an explanation. To enrol in the the Engineering program at Ecole Polytechnique, candidates first suffer through a gruelling delightful “Classe Préparatoire” — roughly 2 or 3 years of “undergraduate maths, physics, and…
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As I’ve posted earlier, there are some Open Faculty positions in Computer Science at Ecole Polytechnique with a deadline coming up February 28, 2018. As a reminder, two professor positions, one assistant professor positon, and one “tenure-track assistant professor” position,…
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With heaps of snow outside the windows, I and my colleagues are spending our days going through heaps of applications for the Ecole Polytechnique Graduate Degree program “IoT: Innovation and Management”. This week: interviews with prospective students. A competent engineer…
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It started snowing yesterday, making the Ecole Polytechnique campus look pretty – but the unprecedented 20cm or so of snow in Paris and suburbs made it quite an ordeal to get to the office this morning. I spent almost 3h on the…
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…after many months of what feels like continuous rain, Mother Nature decided to delicately powder campus this morning. I am looking forward to seeing what Jeremy Barande, our excellent staff photographer, will make of campus today…
Wow, the first admissions round for the Ecole Polytechnique Graduate Degree programs was daunting: an avalanche of truly excellent applicants to evaluate. Don’t get me wrong, I am not complaining on being on the admissions jury of a program attracting…
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Tomorrow is a very special day: in the spring semester, I’ll be helping my colleague, Mark Townsley, with his graduate level course at Ecole Polytechnique entitled “From Fundamentals to Reality: How The Internet Really Work — and, how to make…
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I just got word that my good friend, on-again-off-again-on-again colleague, and habitual co-conspirator, Leo Liberti, is giving an open seminar on “Distance Geometry in Data Science”, on January the 18, from 14h to 15h30 at SystemX (here’re access directions) at Palaiseau…
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