In-Band Network Telemetry (INT) refers to a network monitoring approach where data plane devices insert metadata about network state and packet processing directly into the data packets themselves as they traverse the network. Within crypto trading infrastructure, INT provides granular, real-time visibility into the performance characteristics of network paths. This is critical for optimizing low-latency trade execution and understanding network-induced slippage.
Mechanism
The mechanism involves specialized network devices, such as switches or routers, appending data like hop latency, queue occupancy, or error rates to packets as they pass through. This telemetry information is carried within the packet header or payload, making it accessible at each subsequent device along the path. Upon reaching its destination or a designated collection point, the augmented packet’s telemetry data is extracted and analyzed, offering a complete path view without requiring separate monitoring channels.
Methodology
The methodology centers on instrumenting network devices to support INT capabilities and developing data processing systems to interpret the collected metadata. This includes defining which telemetry fields to collect, designing efficient data aggregation strategies, and implementing analytical tools for performance diagnosis and anomaly detection. In institutional crypto trading, INT can pinpoint exact sources of latency, validate network compliance with service level agreements for RFQ systems, and inform dynamic routing decisions for smart trading algorithms.
SDN centrally controls and programs network paths, dynamically optimizing traffic to enhance quote stream throughput and reduce latency for institutional trading.
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