An INT‐based packet loss monitoring system for data center networks implementing Fine‐Grained Multi‐Path routing

Abstract

In‐band network telemetry (INT) is a newer network measurement technology that uses normal data packets to collect network information hop‐by‐hop with low overhead. Since incomplete telemetry data seriously degrades the performance of upper‐layer network telemetry applications, it is necessary to consider the own INT packet loss. In response, LossSight, a powerful packet loss monitoring system for INT has been designed, implemented, and made available as open‐source. This letter extends the previous work by proposing, implementing, and evaluating LB‐LossSight, an improved version compatible with packet‐level load‐balancing techniques, which are currently used in modern Data Center Networks. Experimental results in a Clos network, one of the most commonly used topologies in today's data centers, confirm the high detection and localization accuracy of the implemented solution.