A Request SPECification (RSPEC) is part of a Flow Specification, and defines the requirements for a flow.
Different possible service types:
| Type | Description | Examples |
|---|---|---|
| Best Effort | No guaranteed level of service. | WWW, FTP |
| Controlled Load | Behaves as Best Effort for an network without load. | |
| Guaranteed | Guarantees a minimum level of service, but no benefit wpuld be provided by higher levels. | Real-time control, latency and delay. |
| Qualitative | Not imediately quantifiable, but better than Best Effort. |