Collecting network telemetry is essential for detecting problems in the network. In recent years we have seen an abundance of research on network telemetry in the data plane. Many of these solutions analyze traffic continuously over a long period of time, while resetting the structure from time to time. If shorter time intervals are needed, sliding windows are usually used, yet these incur significant resource and management overhead. However, often in order to understand what is happening in the network we need to measure events that have recently happened.
We explore the concept of time-aware network telemetry and propose several different paradigms that we utilize for various telemetry tasks. The first is a reactive monitoring scheme for packet loss detection, that monitors only when needed, by tailoring the measurement interval to when losses may occur. The second is a mechanism for finding heavy hitter flows of the recent past. Finally, we explore the option of deleting and decaying a set-membership data structure to allow for more updated information to be maintained.
Shir is a Senior Lecturer (Assistant Professor) and head of the RUNS lab at The Open University of Israel. Before joining the Open University Shir was a postdoctoral researcher at Princeton University, where she worked with Prof. Jennifer Rexford. She received her Ph.D. from Tel Aviv University, where she was advised by Prof. Yehuda Afek in collaboration with Prof. Anat Bremler-Barr.
Shir's main interests are network monitoring and management with a focus on programmable networks.
Shir has received several awards including the Eric and Wendy Schmidt Postdoctoral Award for Women in Mathematical and Computing Sciences and was named one of the Rising Stars in Networking and Communications of 2020 by the N2Women Organization.