QoS Traffic Management
Routing
Overview
QoS classifies and marks traffic, then applies queuing, shaping or policing during contention. Low-latency queues can protect real-time media but need limits so other traffic is not starved. Markings must be trusted only at controlled boundaries; QoS cannot create missing bandwidth.
Protocol stages
- 1Classify
- 2Mark / trust
- 3Queue
- 4Schedule
- 5Transmit
Interactive exercise
Knowledge check
A saturated link carries voice and backups. What controlled policy best protects voice?
Educational model — not real hardware, traffic or official certification.