Networking / AV-IT
QoS — Quality of Service
01 — Definition
The managed-switch feature that lets some traffic go ahead of the rest. In AV, priority goes to audio (Dante) first, then video (NDI), then control, then best-effort. Dante marks its traffic DSCP EF (Expedited Forwarding, 46) — which only counts if the switch honours it, with QoS Trust enabled.
02 — In the field
A managed switch with QoS disabled treats Dante exactly like a large file transfer. Enable QoS Trust DSCP on every port carrying Dante, and check it from the switch CLI once configured.
04 — Sources
- RFC 2598 §2.3 — codepoint 101110 (46) recommandé pour l'EF PHB