DiffServ & The Three Big QoS Problems
Applications: Framework supports a broad range of services depending on PHB and configuration of policers
Scalability: Simplicity of PHBs & pushing “smarts” towards edge, lets core routers be simple, dumb, and fast, but still supports QoS!
Interoperability:
- PHBs suggest but do not imply implementations
- QoS through concatenations of simple bilateral SLAs
- Administratability also a big win