Traffic Management for the Available Bit Rate (ABR) Service in ...

CHAPTER 11
SUMMARY AND FUTURE WORK
11.1 Summary of Contributions
This dissertation has examined the design of several tra c management mecha-
nisms and methodologies for the ABR service in ATM networks. The ideas presented
in this dissertation have signi cantly impacted the shape of the ATM Tra c Man-
agement 4.0 standard. This section summarizes the contributions of this work.
In Chapter 1 we gave a speci cation of the control problem in ABR tra c
management. We presented an open-loop equation in this chapter and presented
the requirements for the closed loop solution in Chapter 3. The goals we seek to
address include: e ciency (high throughput and low delay), fairness, steady state and
transient performance, bu er requirements, robustness, implementation complexity
and scalability. Chapter 2 gives a tutorial introduction to the source, destination
and switch rules as de ned by the ATM Tra c Management 4.0 standard.
A large body of related work (ABR switch schemes) are surveyed in Chapter 4.
Chapters 5 and 6 describe the OSU, ERICA and ERICA+ schemes and related
performance analyses.
374