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SpaceFibre is a multi-Gbits/s, on-board network technology for spaceflight applications, which runs over electrical or fibre-optic cables. It complements the capabilities of the widely used SpaceWire on-board networking standard: improving the data rate by a factor of 10, reducing the cable mass by a factor of two and providing quality of service (QoS) and fault detection, isolation and recovery (FDIR) capabilities. Multi-laning improves the data-rate further to well over 20 Gbits/s. SpaceFibre is able to fulfil a wide range of spacecraft on-board communications applications because of its inbuilt QoS and FDIR capabilities.