youtube image
From YouTube: HotRFC – IETF 108: “How to measure Network Performances with users’ devices”

Description

After Spin bit introduction, and now with packet loss measurement proposals, the Explicit Performance Monitoring on client-server protocols (e.g. QUIC) becomes an interesting topic for Telco.
Explicit Performance Monitoring enables a passive Observer to measure delay and packet loss only watching the marking (a few bits) of production traffic packets.
We propose that the first place where to put the Explicit Performance Observer is on the user device (e.g. mobile phones, PCs).
Two main reasons of this choice.
1. Scalability. On the user device there are few connections to monitor.
2. User device and network probes coordination. It’s possible to set alarm thresholds on the user device (and to signal to network probes to monitor only the sessions with impairments, in order to segment the performance measurements and to locate the faults). In this case network probes, also embedded into network nodes, need to monitor only a limited number of connections (the ones that have problems).