RSVP [2]
Uses two-pass protocol with soft-state:
- sender: Path message
- NEs hold soft-state until Resv, PathTear or time-out
- receiver(s): Resv message - TSpec (+ RSpec)
- sender: PathTear
- receiver(s): ResvTear
- soft-state must be refreshed using Path and Resv
Composed path QoS parameters: