Innovative network monitoring techniques through in-band inter packet gap telemetry (IPGNET)

Network monitoring is a fundamental task for proper network troubleshooting and performance management. Recently, in-band Network Telemetry (INT) has been demonstrated as a powerful and efficient network monitoring framework. Using INT, network information hop-by-hop can be collected directly from the data plane by gathering this information in the production traffic. However, INT data collection is limited by available packet size and processing overhead, making it critical to choose what data to collect and when to collect it. In this demo, we propose the In-band Inter Packet Gap Network Telemetry (IPGNET) per-hop monitoring. We argue that by monitoring the IPG hop-by-hop, it is possible to correlate the data and identify: (i) Network problems like congestion and delays, finding their root cause, and (ii) Microbursts and their contributing flows. Our preliminary results show that IPGNET can detect microbursts on multiple queues and report all the contributing flows with high efficiency in terms of control/data plane overhead.