DiffServ Overview
Exploits edge/core distinction for scalability
Applications contract for specific QoS profiles
- Policing at network periphery
- A few simple, differentiated per-hop forwarding behaviors (PHBs)
- Indicated in packet header
- Applied to PHB traffic aggregates
- PHBs + policing rules = range of services
Clouds contract for aggregate QoS traffic profiles
- Policing at cloud-cloud boundary
- Supports simple, bilateral business agreements