nTwo sides of the same coin
–pre-allocate
resources to avoid congestion
–send data
and control congestion if (and when) is occurs
–
–
–
–
–
–
nTwo points of implementation
–hosts at
the edges of the network (transport protocol)
–routers
inside the network (queuing discipline)
nUnderlying service model
–best-effort
–no quality
of service guarantees