Router QoS Mechanisms
- Classification
- RSVP triggered, flow id mapped to QoS SVC
- Policing is token bucket based
- out of contract packets may be down-graded or dropped
- Distributed WFQ
- per flow queuing on each output interface
- dynamically sharing common buffer pool
- works with WRED
- RED for packet discard avoids global synchronization
- Statistically penalizes “bad” data sources