Pedro de Botelho Marcos

@furg.br

Centro de Ciências Computacionais - C3
Universidade Federal do Rio Grande - FURG

Pedro de Botelho Marcos


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https://researchid.co/pedrobmarcos

RESEARCH, TEACHING, or OTHER INTERESTS

Computer Science, Computer Networks and Communications, Computer Engineering, Information Systems
18

Scopus Publications

218

Scholar Citations

8

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • Routing Under Siege: How Traffic Engineering Decisions Facilitate Prefix Hijackings
    Renan Paredes Barreto, Leandro Márcio Bertholdo, Pedro de Botelho Marcos
    Lecture Notes in Computer Science, 2026
  • Poster: Investigating Traffic Engineering Properties at Internet eXchange Points
    Joaquim Pereira, Pedro Marcos
    Proceedings of the ACM SIGCOMM Internet Measurement Conference IMC, 2024
  • Poster: Building Comprehensive Telecommunications Datasets During a Major Climatic Event
    Leandro Marcio Bertholdo, Renan Paredes Barreto, Pedro de Botelho Marcos
    Proceedings of the ACM SIGCOMM Internet Measurement Conference IMC, 2024
  • Poster: Traffic Engineering Security Implications
    Renan Paredes Barreto, Leandro Marcio Bertholdo, Pedro de Botelho Marcos
    Proceedings of the ACM SIGCOMM Internet Measurement Conference IMC, 2024
  • Analyzing Remote Peering Deployment and Its Implications for Internet Routing
    Fabricio Mazzola, Augusto Setti, Pedro Marcos, Marinho Barcellos
    IEEE ACM Transactions on Networking, 2024
    Internet eXchange Points (IXPs) have significantly transformed the structure and economics of the Internet by allowing many nearby networks to connect directly, avoiding the need for service providers. These large IXPs are so beneficial that they are not just used by nearby networks, but also by far away Autonomous Systems (AS). This is made possible by Remote Peering (RP), which typically involves the use of RP resellers to access remote IXPs. In this paper, we evaluate the effects of RP on four different routing aspects, using a representative group of IXPs located on three continents: (a) growth of RP deployment over one and a half years; (b) presence of route announcement mispractices (when networks prioritize the remote IXP over the local IXP), which are associated to routing anomalies; (c) reliability of RP interfaces and (d) adoption of RP-related BGP communities, i.e. to perform traffic engineering to remote peers. We make our data and results available to the community via a web portal.
  • Light, Camera, Actions: Characterizing the usage of IXPs' action BGP communities
    Fabricio Mazzola, Pedro Marcos, Marinho Barcellos
    Conext 2022 Proceedings of the 18th International Conference on Emerging Networking Experiments and Technologies, 2022
    Border Gateway Protocol (BGP) communities, an optional message attribute, allow network operators to tag BGP announcements and act on routing decisions. Although widely used, it is so far unclear how prevalent the different types of communities are and the degree to which the different traffic engineering actions have been used. There are two major reasons for this gap: few community values have been standardised and the limited visibility at route collectors. In this paper, leveraging the fact that Internet eXchange Points (IXPs) have sets of well-documented BGP communities, we use their BGP Looking Glasses (LGs) to inspect their route servers and shed light on how IXP members are using action BGP communities. During twelve weeks, we collected and analysed routing data from eight IXPs worldwide, focusing the analysis on the four largest IXPs. We observe that i) over one-third of IXP members (>35.7%) use action communities in at least one route; ii) two-thirds (66.6%) of them are intended to avoid propagating routes, mostly to content providers (CPs); iii) nearly one-third (31.8%) are targeting Autonomous Systems (ASes) that are not present at the IXPs' route servers, resulting in no practical routing effect and only increasing processing and memory storage overheads.
  • On the Latency Impact of Remote Peering
    Fabricio Mazzola, Pedro Marcos, Ignacio Castro, Matthew Luckie, Marinho Barcellos
    Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics, 2022
  • Which one should i pick?: Helping operators choosing their inbound traffic engineering techniques
    Fernando Brenner, Odorico Mendizabal, Pedro Marcos
    Conext Student Workshop 2020 Proceedings of the 2020 Student Workshop Part of Conext 2020, 2020
    Inbound Traffic Engineering (ITE) is an essential part of the operation of an Autonomous System (AS). By properly announcing its prefixes, an AS can reduce transit costs, mitigate congestion, and improve its subscribers' overall experience. By interviewing network operators, we learned that operators usually rely on their expertise and in a trial and error approach for selecting one technique for ITE (i.e., AS-Path Prepending, selective announcements). We also learned that sometimes the effect of applying a particular technique could be "stronger" than the necessary for a given situation. Intrigued by such answers and the lack of systematic comparison of the existing ITE techniques in the literature, in this work, we propose an investigation to compare the effectiveness of the different ITE techniques in the wild.
  • AS-Path Prepending: There is no rose without a thorn
    Pedro Marcos, Lars Prehn, Lucas Leal, Alberto Dainotti, Anja Feldmann, et al.
    Proceedings of the ACM SIGCOMM Internet Measurement Conference IMC, 2020
    Inbound traffic engineering (ITE)---the process of announcing routes to, e.g., maximize revenue or minimize congestion---is an essential task for Autonomous Systems (ASes). AS Path Prepending (ASPP) is an easy to use and well-known ITE technique that routing manuals show as one of the first alternatives to influence other ASes' routing decisions. We observe that origin ASes currently prepend more than 25% of all IPv4 prefixes. ASPP consists of inflating the BGP AS path. Since the length of the AS path is the second tie-breaker in the BGP best path selection, ASPP can steer traffic to other routes. Despite being simple and easy to use, the appreciation of ASPP among operators and researchers is diverse. Some have questioned its need, effectiveness, and predictability, as well as voiced security concerns. Motivated by these mixed views, we revisit ASPP. Our longitudinal study shows that ASes widely deploy ASPP, and its utilization has slightly increased despite public statements against it. We surprisingly spot roughly 6k ASes originating at least one prefix with prepends that achieve no ITE goal. With active measurements, we show that ASPP effectiveness as an ITE tool depends on the AS location and the number of available upstreams; that ASPP security implications are practical; identify that more than 18% of the prepended prefixes contain unnecessary prepends that achieve no apparent goal other than amplifying existing routing security risks. We validate our findings in interviews with 20 network operators.
  • A survey on the current internet interconnection practices
    Pedro Marcos, Marco Chiesa, Christoph Dietzel, Marco Canini, Marinho Barcellos
    Computer Communication Review, 2020
    The Internet topology has significantly changed in the past years. Today, it is richly connected and flattened. Such a change has been driven mostly by the fast growth of peering infrastructures and the expansion of Content Delivery Networks as alternatives to reduce interconnection costs and improve traffic delivery performance. While the topology evolution is perceptible, it is unclear whether or not the interconnection process has evolved or if it continues to be an ad-hoc and lengthy process. To shed light on the current practices of the Internet interconnection ecosystem and how these could impact the Internet, we surveyed more than 100 network operators and peering coordinators. We divide our results into two parts: ( i ) the current interconnection practices, including the steps of the process and the reasons to establish new interconnection agreements or to renegotiate existing ones, and the parameters discussed by network operators. In part ( ii ), we report the existing limitations and how the interconnection ecosystem can evolve in the future. We show that despite the changes in the topology, interconnecting continues to be a cumbersome process that usually takes days, weeks, or even months to complete, which is in stark contrast with the desire of most operators in reducing the interconnection setup time. We also identify that even being primary candidates to evolve the interconnection process, emerging on-demand connectivity companies are only fulfilling part of the existing gap between the current interconnection practices and the network operators' desires.
  • Dynam-IX: A dynamic interconnection eXchange
    Pedro Marcos, Marco Chiesa, Lucas Müller, Pradeeban Kathiravelu, Christoph Dietzel, et al.
    Conext 2018 Proceedings of the 14th International Conference on Emerging Networking Experiments and Technologies, 2018
  • Dynam-IX: A dynamic interconnection exchange
    Pedro Marcos, Marco Chiesa, Lucas Müller, Pradeeban Kathiravelu, Christoph Dietzel, et al.
    SIGCOMM 2018 Proceedings of the 2018 Posters and Demos Part of SIGCOMM 2018, 2018
  • Picking a partner: A fair blockchain based scoring protocol for autonomous systems
    Yousef Alowayed, Marco Canini, Pedro Marcos, Marco Chiesa, Marinho Barcellos
    Anrw 2018 Proceedings of the 2018 Applied Networking Research Workshop, 2018
  • Moving Bits with a Fleet of Shared Virtual Routers
    Pradeeban Kathiravelu, Marco Chiesa, Pedro Marcos, Marco Canini, Luis Veiga
    2018 IFIP Networking Conference IFIP Networking and Workshops IFIP Networking 2018 Proceedings, 2018
  • An immersive and collaborative visualization system for digital manufacturing
    Nelson Duarte Filho, Silvia Costa Botelho, Jonata Tyska Carvalho, Pedro de Botelho Marcos, Renan de Queiroz Maffei, et al.
    International Journal of Advanced Manufacturing Technology, 2010
  • A general purpose cave-like system for visualization of animated and 4D CAD modeling
    Nelson Duarte Filho, Silvia Costa Botelho, Jonata Tyska Carvalho, Pedro de Botelho Marcos, Renan de Queiroz Maffei, et al.
    Proceedings 2009 3rd Southern Conference on Computational Modeling Mcsul 2009, 2009
  • An automated platform for immersive and collaborative visualization of industrial models
    Nelson Duarte Filho, Silvia Costa Botelho, Jonata Tyska Carvalho, Pedro de Botelho Marcos, Renan de Queiroz Maffei, et al.
    Proceedings of the IEEE International Conference on Engineering of Complex Computer Systems ICECCS, 2009
  • A multi-cave visualization system for Digital Manufacturing
    Nelson Duarte Filho, Silvia Costa Botelho, Jonata Tyska Carvalho, Pedro de Botelho Marcos, Renan de Queiroz Maffei, et al.
    IFAC Proceedings Volumes IFAC Papersonline, 2009

RECENT SCHOLAR PUBLICATIONS

  • Routing Under Siege: How Traffic Engineering Decisions Facilitate Prefix Hijackings
    RP Barreto, LM Bertholdo, PB Marcos
    International Conference on Passive and Active Network Measurement, 44-70 , 2026
    2026
  • Caracterização da Vulnerabilidade a Sequestros de Prefixo de Sistemas Autônomos Militares
    AB Carvalho, PB Marcos, FS de Paula, CA da Silva, RA Ferreira
    Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos (SBRC … , 2025
    2025
    Citations: 1
  • Analyzing the effect of an extreme weather event on telecommunications and information technology: Insights from 30 days of flooding
    LM Bertholdo, RB Paredes, G de Lima Marin, CAH Loureiro, ...
    International Conference on Passive and Active Network Measurement, 276-304 , 2025
    2025
    Citations: 4
  • Investigando as Implicações de Segurança da Engenharia de Tráfego e Conectividade no Roteamento da Internet
    R Barreto, L Bertholdo, P Marcos
    Escola Regional de Redes de Computadores (ERRC), 35-41 , 2024
    2024
  • Investigando o uso de técnicas de engenharia de tráfego na Internet
    L Mendonça, P Marcos, V Pinto
    Escola Regional de Redes de Computadores (ERRC), 65-70 , 2024
    2024
  • Investigando Conectividade e Engenharia de Tráfego em Pontos de Troca de Tráfego da Internet
    J Pereira, P Marcos
    Escola Regional de Redes de Computadores (ERRC), 47-52 , 2024
    2024
  • Poster: Investigating Traffic Engineering Properties at Internet eXchange Points
    J Pereira, P Marcos
    Proceedings of the 2024 ACM on Internet Measurement Conference, 779-780 , 2024
    2024
  • Poster: Building Comprehensive Telecommunications Datasets During a Major Climatic Event
    LM Bertholdo, RP Barreto, PB Marcos
    Proceedings of the 2024 ACM on Internet Measurement Conference, 781-782 , 2024
    2024
  • Poster: Traffic engineering security implications
    RP Barreto, LM Bertholdo, PB Marcos
    Proceedings of the 2024 ACM on Internet Measurement Conference, 771-772 , 2024
    2024
    Citations: 1
  • Analyzing remote peering deployment and its implications for internet routing
    F Mazzola, A Setti, P Marcos, M Barcellos
    IEEE/ACM Transactions on Networking 32 (4), 2950-2959 , 2024
    2024
    Citations: 3
  • Investigando o Uso de Técnicas de Engenharia de Tráfego em Prefixos da Rede Bitcoin e suas Possíveis Implicações de Segurança
    RP Barreto, P Marcos
    Escola Regional de Redes de Computadores (ERRC), 7-12 , 2023
    2023
  • Analisando o impacto e a capacidade de mitigação de sequestro de prefixos com base na conectividade
    GT Jaeger, P Marcos
    Escola Regional de Redes de Computadores (ERRC), 1-6 , 2023
    2023
  • IX-Rank: uma plataforma para comparar pontos de troca de tráfego da Internet
    JF Pereira, P Marcos
    Escola Regional de Redes de Computadores (ERRC), 37-42 , 2023
    2023
  • Light, Camera, Actions: characterizing the usage of IXPs' action BGP communities
    F Mazzola, P Marcos, M Barcellos
    Proceedings of the 18th International Conference on emerging Networking … , 2022
    2022
    Citations: 8
  • On the latency impact of remote peering
    F Mazzola, P Marcos, I Castro, M Luckie, M Barcellos
    International Conference on Passive and Active Network Measurement, 367-392 , 2022
    2022
    Citations: 14
  • Which one should I pick? Helping operators choosing their inbound traffic engineering techniques
    F Brenner, O Mendizabal, P Marcos
    Proceedings of the Student Workshop, 7-8 , 2020
    2020
  • AS-Path Prepending: there is no rose without a thorn
    P Marcos, L Prehn, L Leal, A Dainotti, A Feldmann, M Barcellos
    Proceedings of the ACM Internet Measurement Conference, 506-520 , 2020
    2020
    Citations: 35
  • A survey on the current internet interconnection practices
    P Marcos, M Chiesa, C Dietzel, M Canini, M Barcellos
    ACM SIGCOMM Computer Communication Review 50 (1), 10-17 , 2020
    2020
    Citations: 10
  • Towards a dynamic Internet interconnection ecosystem for improved wide-area traffic delivery
    PB Marcos
    2019
  • Dynam-IX: A dynamic interconnection exchange
    P Marcos, M Chiesa, L Müller, P Kathiravelu, C Dietzel, M Canini, ...
    Proceedings of the 14th International Conference on emerging Networking … , 2018
    2018
    Citations: 21

MOST CITED SCHOLAR PUBLICATIONS

  • MRSG-A MapReduce simulator over SimGrid
    W Kolberg, PB Marcos, J Anjos, AKS Miyazaki, CR Geyer, LB Arantes
    Parallel Computing , 2013
    2013
    Citations: 53
  • AS-Path Prepending: there is no rose without a thorn
    P Marcos, L Prehn, L Leal, A Dainotti, A Feldmann, M Barcellos
    Proceedings of the ACM Internet Measurement Conference, 506-520 , 2020
    2020
    Citations: 35
  • Picking a partner: A fair blockchain based scoring protocol for autonomous systems
    Y Alowayed, M Canini, P Marcos, M Chiesa, M Barcellos
    Proceedings of the 2018 Applied Networking Research Workshop, 33-39 , 2018
    2018
    Citations: 24
  • An immersive and collaborative visualization system for digital manufacturing
    N Duarte Filho, S Costa Botelho, J Tyska Carvalho, P de Botelho Marcos, ...
    The International Journal of Advanced Manufacturing Technology 50 (9), 1253-1261 , 2010
    2010
    Citations: 23
  • Dynam-IX: A dynamic interconnection exchange
    P Marcos, M Chiesa, L Müller, P Kathiravelu, C Dietzel, M Canini, ...
    Proceedings of the 14th International Conference on emerging Networking … , 2018
    2018
    Citations: 21
  • On the latency impact of remote peering
    F Mazzola, P Marcos, I Castro, M Luckie, M Barcellos
    International Conference on Passive and Active Network Measurement, 367-392 , 2022
    2022
    Citations: 14
  • A survey on the current internet interconnection practices
    P Marcos, M Chiesa, C Dietzel, M Canini, M Barcellos
    ACM SIGCOMM Computer Communication Review 50 (1), 10-17 , 2020
    2020
    Citations: 10
  • Light, Camera, Actions: characterizing the usage of IXPs' action BGP communities
    F Mazzola, P Marcos, M Barcellos
    Proceedings of the 18th International Conference on emerging Networking … , 2022
    2022
    Citations: 8
  • Moving Bits with a Fleet of Shared Virtual Routers
    P Kathiravelu, M Chiesa, P Marcos, M Canini, L Veiga
    IFIP Networking 2018 , 2018
    2018
    Citations: 7
  • An automated platform for immersive and collaborative visualization of industrial models
    N Duarte Filho, SC Botelho, JT Carvalho, P de Botelho Marcos, ...
    2009 14th IEEE International Conference on Engineering of Complex Computer … , 2009
    2009
    Citations: 5
  • Analyzing the effect of an extreme weather event on telecommunications and information technology: Insights from 30 days of flooding
    LM Bertholdo, RB Paredes, G de Lima Marin, CAH Loureiro, ...
    International Conference on Passive and Active Network Measurement, 276-304 , 2025
    2025
    Citations: 4
  • Analyzing remote peering deployment and its implications for internet routing
    F Mazzola, A Setti, P Marcos, M Barcellos
    IEEE/ACM Transactions on Networking 32 (4), 2950-2959 , 2024
    2024
    Citations: 3
  • A General Purpose Cave-like System for Visualization of Animated and 4D CAD Modeling
    SC Botelho, JT Carvalho, P de Botelho Marcos, R de Queiroz Maffei, ...
    Computational Modeling (MCSUL), 2009 Third Southern Conference on, 82-87 , 2009
    2009
    Citations: 3
  • iTracking - um Framework para Rastreamento Através de RFID
    EL De Grandi, PB Marcos, LB Parzianello, TMF da Costa, SSC Botelho, ...
    Simpósio Brasileiro de Automação Inteligente , 2015
    2015
    Citations: 2
  • A multi-cave visualization system for digital manufacturing
    N Duarte Filho, SC Botelho, JT Carvalho, P de Botelho Marcos, ...
    IFAC Proceedings Volumes 42 (4), 1155-1160 , 2009
    2009
    Citations: 2
  • Caracterização da Vulnerabilidade a Sequestros de Prefixo de Sistemas Autônomos Militares
    AB Carvalho, PB Marcos, FS de Paula, CA da Silva, RA Ferreira
    Simpósio Brasileiro de Redes de Computadores e Sistemas Distribuídos (SBRC … , 2025
    2025
    Citations: 1
  • Poster: Traffic engineering security implications
    RP Barreto, LM Bertholdo, PB Marcos
    Proceedings of the 2024 ACM on Internet Measurement Conference, 771-772 , 2024
    2024
    Citations: 1
  • DYNAMIX: A Dynamic Agreement Marketplace on Internet eXchange Points
    PB Marcos, A Wermann, M Barcellos, L Bertholdo
    Student Workshop of the ACM International on Conference on emerging … , 2016
    2016
    Citations: 1
  • Maresia: an approach to deal with the single points of failure of the mapreduce model
    PB Marcos
    2013
    Citations: 1
  • Routing Under Siege: How Traffic Engineering Decisions Facilitate Prefix Hijackings
    RP Barreto, LM Bertholdo, PB Marcos
    International Conference on Passive and Active Network Measurement, 44-70 , 2026
    2026