Deterministic and Probabilistic P4-Enabled Lightweight In-Band Network Telemetry

Papadopoulos, Konstantinos; Papadimitriou, Panagiotis; Papagianni, Chrysa

doi:10.1109/tnsm.2023.3301839

Cited by 3 publications

References 28 publications

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CLINT: Controller-Assisted Lightweight In-Band Network Telemetry

Papadopoulos,

Papadimitriou

2024

IEEE Access

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The increasing need for high-precision monitoring and network-wide observability has spurred significant interest in In-Band Network Telemetry (INT), which empowers the collection of monitoring data directly from the dataplane, thus, alleviating the various shortcoming of passive monitoring techniques. INT, in some of its initial forms (e.g., P4-INT), tends to accumulate per-hop telemetry values within each packet, introducing substantial transmission overhead. Recent efforts to alleviate this shortcoming spread per-hop telemetry values among multiple packets, but eventually cause other implications, such as INT data redundancy or collisions during state lookup, stemming from the probabilistic data structures that they employ. Along these lines, we stress on the need for a lightweight INT approach with deterministic behavior. To this end, we present a new INT approach (Controller-Assisted Lightweight In-Band Network Telemetry -CLINT) that relies on a telemetry controller for the coordination of INT nodes, through the update of telemetry states, which indicate at each instance the telemetry action that should be applied to each incoming packet. We discuss in detail the operation of CLINT, as well as its prototype implementation using P4 BMv2 and the P4Runtime API. Our evaluation results indicate that CLINT outperforms two state-of-the-art lightweight INT techniques (i.e., PINT and DLINT) in terms of monitoring efficiency and network update detection, while maintaining an insignificant control communication overhead. INDEX TERMSIn-band network telemetry (INT), network monitoring, software-defined networks, programmable dataplanes

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CLINT: Controller-Assisted Lightweight In-Band Network Telemetry

Papadopoulos,

Papadimitriou

2024

IEEE Access

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Lightweight INT on the Tofino programmable switch

Dimoglis,

de Almeida,

Papadopoulos

et al. 2024

Proceedings of the 30th Annual International Conference on Mobile Computing and Networking

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MM-INT: Telemetria em Switches Programáveis com Múltiplas Filas usando Roteamento Multicaminhos na Origem

Bragatto,

Clevelares,

Dominicini

et al. 2024

Anais Do XLII Simpósio Brasileiro De Redes De Computadores E Sistemas Distribuídos (SBRC 2024)

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Este artigo destaca a importância das filas associadas às portas dos switches no monitoramento de uma rede. Tradicionalmente, a coleta de dados sobre essas filas é feito com o uso de planos de dados programáveis, e telemetria baseada em sondas INT (In-band Network Telemetry), assumindo que há apenas uma única fila por porta de saída. O MM-INT (Multiqueue Multicast - INT) é uma solução que utiliza registradores para armazenar dados de todas as filas e de todas as portas, permitindo a coleta eficiente de informações de monitoramento. O MM-INT evita a sobrecarga de sondas e emprega o mecanismo de roteamento na origem e árvores multicaminhos para as sondas. Os resultados demonstram reduções significativas na quantidade de sondas enviadas, em comparação com outras soluções tradicionais da literatura.

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Deterministic and Probabilistic P4-Enabled Lightweight In-Band Network Telemetry

Cited by 3 publications

References 28 publications

CLINT: Controller-Assisted Lightweight In-Band Network Telemetry

CLINT: Controller-Assisted Lightweight In-Band Network Telemetry

Lightweight INT on the Tofino programmable switch

MM-INT: Telemetria em Switches Programáveis com Múltiplas Filas usando Roteamento Multicaminhos na Origem

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