Conference content will be submitted for inclusion into IEEE Xplore, Google Scholar and other Abstracting and Indexing (A&I) databases. ITNAC 2021 is technically co-sponsored by the IEEE Computer Society and the IEEE Communications Society. We welcome the support of the IEEE and encourage participants to join the IEEE society technical committees. Now Fully Online due to COVID-19 restrictions Due to COVID-19 and the ongoing lockdowns around the world, the committee has decided to hold the conference fully online. We thank our hosts, the University of New South Wales, Sydney Australia for their support for ITNAC 2021. Keynotes Professor Michela Meo, Politecnico di Torino, Topic - For a Sustainable Future of Communications and Networking - Read more Dr James Kershaw, Juniper Networks, Topic - Closing the Loop – Automation in Service Provider Networks - Read more Dr David Soldani, Rakuten Symphony, Topic - 6G Fundamentals: Vision and Enabling Technologies - From 5G to 6G Trustworthy and Resilient Systems - Read more Workshop Mr Michael Purcell, Juniper Networks, Topic - DevOps enabling modern data network design - Read more In addressing customer data networking requirements there are often different deployment options each with their own benefits and in some cases challenges; for example, do they move to or leverage ‘the cloud’, build it themselves or purchase off the shelf solutions – most likely it is a hybrid blend of all the above. The use of automation toolsets and open standard protocols, amongst many others, are important components to a successful solution. This workshop explores examples where networking meet CI/CD and Infrastructure as Code, and how these principles are being used to address modern networking requirements. In doing so, delivering a timely, scalable, and reliable service. ITNAC Focus Topics With the increasing focus on modelling and simulation in the fields of cyber-networks, data mining, cyber security, distributed computing, mobile computing, cognitive computing, cloud computing, computing tools, applications, simulation tools, system performance and data and computer communications the demand for high quality research outcomes has never been greater. ITNAC has been the forum for researchers and engineers to present and discuss topics related to advanced computing and data communication network technologies, services and applications. Novel contributions are presented in the form of keynote speeches by international experts, peer-reviewed technical papers, and posters. ITNAC 2021 seeks to address and capture highly innovative and state-of-the-art research from academia, industry and standardization bodies. ITNAC 2021 is an international conference and forum for the presentation of research outcomes covering timely and relevant aspects concerning modelling and simulation of distributed, mobile, cognitive and cloud computing, computer and data communications, local and metropolitan networks, optical, wired and wireless telecommunication networks and applications. Contributions are welcome on all advanced research and particularly (but not limited to) on the following topics: Wireline networks Wireless networks Multi-access edge computing, Fog, Mist Modelling and Simulation Cyber-Networks, Data Mining and Cyber-Security Distributed, Cognitive and Cloud Computing Network Applications & Convergence Local and Metropolitan Networks Community and corporate Wi-Fi Data Communications Networks and Management Software Defined Networking Internet Technologies and Applications Emerging Technologies Mobility and Vehicular Networks Mobile Cellular and Wireless Networks Optical Communications Wireless Sensor Networks Power Efficiency and Sustainability Wireline Networks The field of wireline networking has evolved in recent years and the shift to fibre networks is increasing. Advances in optical communications, hybrid networks, and the utilization of new and innovative approaches to make networks more reliable and resilient has continued. The goal of this track is to provide a forum for the presentation of new advances, ideas, and solutions from theoretical, experimental, and applied research to address specific new challenges and emerging issues concerned with this field. We seek papers describing original, previously unpublished research results. Topics of interest include, but are not limited to: Optical Communications & Networking Cloud & Data Center Networks Software-Defined Infrastructure (Networks, Storage, and Compute) Core Network Architectures and Protocols Network Resilience Anomaly Detection Reliability Performance Analysis Carrier Networks Metro, Local & Access Networks Submarine Networks High-performance Routing Heterogeneous Networks Network Architectures for Smart Grid Hybrid Wireline-Wireless Networks xDSL networks Mobile & Wireless Networks The field of mobile and wireless networks is a rapidly evolving area. Recent advances in technologies for emerging mobile and wireless networks, including mobile ad hoc networks, vehicular networks, 5G/6G cellular networks, among others, have the potential to enable many new mobile and wireless services and applications that can profoundly impact our lives in positive ways. The goal of this track is to provide a forum for the presentation of new advances, ideas, and solutions from theoretical, experimental, and applied research to address specific new challenges and emerging issues concerned with this field. We seek papers describing original, previously unpublished research results. Topics of interest include, but are not limited to: 5G and 6G Wireless access and routing protocols Cross-layer design optimisation Green, low power, energy efficient and sustainable networking Nature and bio-inspired approaches to networking Network-based mobile positioning and tracking systems Cognitive and cooperative principles for networking Inter-working, integration, and convergence issues Mobile social and ambient networks Mobile and fixed wireless broadband access networks QoS provisioning and resource management Terminal and network mobility Traffic engineering, congestion and admission control Techno-economic analysis and business models for emerging networks Novel network-enabled applications and services Networking standards and regulations Security and privacy issues Internet and Communications Technologies In the current and the envisioned future Internet, a variety of new technologies and applications is emerging. New networking architectures and design concepts are to be developed which consider interactions with the real world, as well as emerging issues like energy-efficiency or socio-economic aspects. A holistic view is necessary which takes into account the network of the Future, the Internet of services, media and enterprise Internet, but also the Internet of Things. However, there are still significant challenges for the theoretical understanding and on the deployment of Internet technologies. The goal of the Internet technology track is to bring together people from academia and industry and to stimulate discussions on future Internet applications and future wireline and wireless Internet architectures to accelerate their development. We seek papers describing original, previously unpublished research results. Topics of interest include, but are not limited to: Emerging Technologies: Virtualization technology and programmability of FI elements Service-oriented architectures and service composition Future Internet routing schemes or transport concepts IPv6 and its derivatives Economic Traffic Management Massive MIMO Mesh networks, ad-hoc networks, sensor networks, femtocells Self-configuring and self-optimizing cellular networks Dynamic Spectrum Access and Cognitive Radio Airborne Communications Ultra-reliable and Low-Latency Communications Hybrid Satellite-Terrestrial Communications Nano and Molecular Communications and Networks Vehicular Networks Emerging Applications: Content-centric networks Social networks Multilevel and location-aware mobile services Cloud computing Software as a service Grid computing Peer-to-peer networks and overlays Multimedia support e.g. vehicle-2-X communications Internet governance Emerging Issues: Artificial Intelligence Next Generation Internet Architecture Energy efficiency and energy awareness Network application awareness Network management systems and control plane Coarse-grained QoS solutions for scalable Future Internet services Quality of Experience Support of mobility of devices, users, sessions, networks, and services Security and privacy mechanism Flexibility to realize new innovations IPv6 mobility and vehicular networks Mobility management and topology control Location-based services and positioning Micro and macro-mobility Mobility, location and handoff management Mobile and wireless IPv6 IPv6 security Wireless broadband mobile access ad hoc and sensor networks Wireless multicasting Wireless mesh networks Topology control in wireless networks Physical and MAC layer issues IPv6 GeoNetworking Cross-layer design and optimization for vehicular networks and cognitive networks Security issues for vehicular and cognitive networks Network Applications and Convergence Network-Based Applications are a fast growing area for network services. The goal of this track is to provide a forum for the presentation of new advances, ideas, and solutions from theoretical, experimental, and applied research to address specific new challenges and emerging issues concerned with this field. We seek papers describing original, previously unpublished research results. Topics of interest include, but are not limited to: Software Defined Networks (SDN) SDN as Enabling Technology for 5G Network Virtualization Cloud & Crowd Computing Smart Homes & Smart Cities & Smart Buildings Resource Planning & Management Smartphone Networked Apps Content Delivery Networks Big Data & Analytics Augmented & Virtual Reality Cyber-Physical Systems & Networks Game Theory in Networks Tactile Internet Access Control Scheduling Algorithms Security, Trust and Privacy Optical Communications Optical communication technologies will continue to be increasingly important in supporting the future Internet's expected scaling requirements of billions of users, their IT needs and aggregated huge bandwidths. Over the last two decades, optical communication technologies have increased the transmission capacity per fiber by several orders of magnitude, achieving Tbit/s transmissions. If the data traffic usage continues to increase at the current rate, a further increase in the transmission capacity of several orders of magnitude will be needed over the coming decades. This implies that future optical systems and networks should be able to support capacities well over Peta bit/s. However, the current technologies have already begun to reveal several fundamental limits; the electronic speed limit, the Shannon and quantum limit, and the IP bottleneck. The future technologies must overcome these limits ensuring sustainable growth of network traffic. The optical communications theme aims to provide a forum for the presentation and discussion of significant progress of research, development and applications of cutting-edge technologies in optical communication devices, subsystems, systems and networks. Topics of interest include, but are not limited to: Next Generation Broadband Access Networks, Subsystems and Systems Optical Ethernet, EPON/GPON, 10Gb/s Ethernet, 100Gb/s Ethernet WDM Access Networks, WDM-PON Wired/wireless convergence, Telecom/broadcast convergence, IPTV Hybrid optical-wireless access networks, Radio-over-fiber Higher order modulations and OFDM in optical access networks Fiber-to-the-Home/Fiber-to-the-Curve (FTTH/FTTC) Grid/cloud computing over optical networks Green Internet and energy efficiency Next Generation Optical Networks, Subsystems and Systems Optical core network architecture, design, control, and management Optical cross-connect/add-drop multiplexers, ROADM, and switching subsystems Optical packet/burst/flow switching networks and subsystems Large capacity optical transmission, WDM, OTDM OFDM, higher order modulations and advanced modulation formats in photonics Energy efficient optical networks Impairments mitigations and performance monitoring techniques Digital signal processing in photonics systems Free Space optical communications Optical Fiber, Components, and Devices Fiber design, characterization, fabrication, installation,, and maintenance Photonics Crystal fibers Polymer/non-silica fibers Optical active device and modules Optical passive device and modules Fiber Bragg grating, fiber lasers/amplifiers, MUX/DEMUX, and demodulators Silicon photonics Optical MEM Wireless Sensor Networks The field of wireless sensor networks is now getting more and more mature, but new design concepts, experimental and theoretical findings, and applications continue to emerge at a rapid pace. Furthermore, there are still significant challenges for the theoretical understanding and practical application of sensor networks. The goal of the sensor networking track is to bring together people from academia and industry who have interest in the area of wireless ad hoc and sensor networks. We seek papers describing original, previously unpublished research results. Topics of interest include, but are not limited to: Networking protocols: MAC, routing, transport, next generation Cooperative communication approaches Cross-layer design and optimization Broadcasting, multicasting, geocasting Quality-of-service, reliability and fault tolerance, coverage and connectivity Security Supplementary services: localization, time synchronization Body sensor networks Operating Systems and Software Middleware and Macroprogramming Information and query processing Prototypes, field experiments, testbeds Theoretical limits, network scaling Novel applications Networks and Management Telecommunications and networking policy, regulation and management are an important aspect of deregulation and competition policy formulation. There are significant challenges for the development of an understanding of the dynamics of telecommunications markets. The introduction of solutions and case studies provide an opportunity to analyse outcomes and to learn from research into policy and management practices. Topics of interest include, but are not limited to: General topics related to networks and applications Broadband Network Management Regional and Remote Networks Next generation network regulation Communication technology fundamentals