Conference Papers

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    On the Importance of Traffic Control Subsystem in ICN-based Industrial Networks
    (IEEE Computer Society, 2020) Nagaraj, A.H.; Kataria, B.; Sohoni, A.; Tahiliani, M.P.; Tandur, D.; Satheesh, H.
    The Industrial Automation Control Systems (IACS) are currently dominated by IP-based protocols. Industry 4.0 demands an efficient and scalable networking infrastructure that facilitates data sharing to drive operational improvements and develop business intelligence. The deterministic requirements in industrial networks have led to the emergence of a new IEEE standard in the form of Time-Sensitive Networking (TSN). TSN enables having an upper bound on the latency of data communication, thereby partially fulfilling the requirements of Industry 4.0. However, TSN alone cannot provide the level of determinism required in industrial networks. The efficiency of the layers above TSN can significantly affect the network performance. Information Centric Networking (ICN), which contrasts with IP-based protocols by focusing on the data rather than on the endpoints, is emerging as a promising network layer paradigm. In this paper, we evaluate what it takes for ICN to be integrated with IACS, and thereby meet the requirements of industrial networks. © 2020 IEEE.
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    Implementation of NAT44 and NAT64 using TC-BPF and eXpress Data Path (XDP)
    (Institute of Electrical and Electronics Engineers Inc., 2022) Shashank, D.; Kataria, B.; Sohoni, A.; Tahiliani, M.P.
    Large number of new devices connecting to the Internet has overwhelmed the available IPv4 address space. With devices that are IPv6 enabled, there is a need to translate their addresses to IPv4 so that they can communicate with servers that use IPv4. Network Address Translation (NAT) solves this problem by mapping IPv6 addresses to IPv4 and performing the translation at the router between the IPv4-enabled client and IPv6-enabled server. This is called NAT64. NAT is currently used by most of the Internet Service Providers (ISPs) around the world. However, most of the existing implementations involve a lot of kernel overhead. eXpress Data Path (XDP) is a relatively new concept that lets packets be processed faster than the normal network stack. It requires a modification to the kernel and allows packets to move through an integrated fast path in the kernel stack. XDP-NAT is being treated as a feasible alternative to the traditional NAT implementations, owing to its advantages such as low processing overhead and easy implementation. This work focuses on using the packet processing capabilities of XDP to perform address translation. This paper describes the design and a proof-of-concept implementation of NAT64 using XDP. © 2022 IEEE.