Paper review : Intergrated Services in the Internet Architecture: an Overview (BCS94)
Reviewer : Hai Fang (firstname.lastname@example.org)
To provide service for wide variety of applications, dealing with real-time traffic.
This paper proposes a new architecture to encompass integrated service: the IS model
which extends the original best-effort model and a reference implementation framework
to realize this model.
- Main ideas
- The old service model for Internet cannot manage resources efficiently at IP level,
whereas the IS model may provide different kinds of service for different applications.
- The framework includes four components: the packet scheduler, the admission control
routine, the classifier, and the reservation setup protocol; the coodination of these
conponents provide a per-flow/session traffic control ar the routers.
- Significance rating: 4
QoS is an important topic in current development of the Internet, and it requests the
explicit management of the resources. This framework presented in this paper supports
both non-real-time and real-time communication in the extension of the current Internet.
This paper concludes the current efforts on this topic, hence throws much light for the
- Convincing rating
The authors describe the design principles of their architecture, then introduce the
IS model and the implementation framework with some detailed considerations. The new
architecture is compared with the old model, and the readers may get a clear big picture
from this overview.
One thing confused me is that how the situation will be whenever a working router
suddenly crashed. Will it make a trouble for the IS network? Since it will lose the
information, and the hosts it servicing will lose the path.
From the technical viewpoint, this model is still too complex to apply to the real networks,
especially for the huge scale of the Internet.
As for the methodology for this paper, the authors exclude other possibilities, e.g.
designing a new infrastructure which is parallel to the current Internet. This narrows
the focus down to find a good extension of the Internet, instead of looking for a
fundamental revolution of the network infrastructure.
There is still a long way to go for improving the sevice types and quality of the Internet.
However, one thing is clear that the research will dig through the internal of the network
instead of focusing on the improvements at the end hosts and applications.