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Deterministic Networking
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<p>Deterministic Networking (DetNet) is an effort by the <a href="/facts/IETF/tIcCsFhX">IETF</a> DetNet Working Group to study implementation of <a href="/facts/Deterministic_algorithm/v8x4wz35">deterministic</a> data paths for <a href="/facts/Real-time_computing/p9HxgL4L">real-time</a> applications with extremely low data loss rates, packet delay variation (jitter), and bounded latency, such as audio and video streaming, industrial automation, and vehicle control. </p><p>DetNet operates at the <a href="/facts/Internet_Protocol/Qq6VeEal">IP</a> <a href="/facts/Layer_3/L2jAtJzQ">Layer 3</a> routed segments using a <a href="/facts/Software-defined_networking/MJGFxyoj">software-defined networking</a> layer to provide <a href="/facts/IntServ/HTxRIh7X">IntServ</a> and <a href="/facts/DiffServ/GcqpLBW3">DiffServ</a> integration, and delivers service over lower <a href="/facts/Layer_2/K9yPufbt">Layer 2</a> bridged segments using technologies such as <a href="/facts/Multiprotocol_Label_Switching/k7cx1PWw">MPLS</a> and IEEE 802.1 <a href="/facts/Time-Sensitive_Networking/po34EBoL">Time-Sensitive Networking</a>. Deterministic Networking aims to migrate time-critical, high-reliability industrial control and audio-video applications from special-purpose <a href="/facts/Fieldbus/kna8UpU3">Fieldbus</a> networks (<a href="/facts/HDMI/HuNwzm04">HDMI</a>, <a href="/facts/CAN_bus/EGxoS88W">CAN bus</a>, <a href="/facts/PROFIBUS/8GBvaRCb">PROFIBUS</a>, <a href="/facts/RS-485/YEABejzm">RS-485</a>, <a href="/facts/RS-422/le2rYC8T">RS-422</a>/<a href="/facts/RS-232/NCpvGuyq">RS-232</a>, and <a href="/facts/I%25C2%25B2C/dKBBhs4U">I²C</a>) to packet networks and IP in particular. DetNet will support both the new applications and existing IT applications on the same physical network. </p><p>To support real-time applications, DetNet implements reservation of data plane resources in intermediate nodes along the data flow path, calculation of explicit routes that do not depend on network topology, and redistribute data packets over time and/or space to deliver data even with the loss of one path. </p>