IETF GS Subclasses
Both subclasses require some bandwidth guarantee
- nominal mean delay, but can tolerate “occasional” variation
- not specified what this means exactly!
- called predictive or controlled-load service
- through admission control, attempts to provide traffic delivery within the same bounds as an unloaded network
- it really is this imprecise!
- need a worst-case delay bound
- called guaranteed service (real deal!)