DMS'98 Tutorial I

Tutorial I: ATM High Speed Networks (Taieb Znati)

Abstract: The first half of this decade saw landmark advances in the communication industry, particularly in broadband technologies. The next generation communication networks will be based on fast switching and streamlined protocols, and the impact of high-capacity broadband networks on application developers and users will be nothing short of revolutionary. Designing and implementing network infrastructures that support the multimedia services are critical to the business success in the 90s and beyond. This course brings needed perspective to students seeking to understand high speed networks and services. The course focuses its learning on a thorough understanding of Asynchronous Transfer Mode (ATM), a major technology that is anticipated to play a major role in shaping networking of the future, and its coexistence with IP networks.

Course Benefits: The course provides an in-depth description of the ATM technology. The ATM protocol architecture is discussed in depth and ATM technical considerations and implications on future network services are explored. Several proposed congestion and flow control algorithms will also be studied. Realizing the importance of internetworking, the IETF and the ATM Forum are pursuing standardizing technologies that will allow IP to be run over ATM, including LAN Emulation, IP Multicasting over ATM and short-cut-routing. In addition, multilayer switching has been adopted by vendors to combine the speed and manageability of switching with the internetworking ability and flexibility of IP. These IP/ATM protocols and technologies will be presented and discussed.

Audience: This course is of interest to Network Reseachers, Telecommunication Managers, Network Supervisors, System Support Engineers, LAN Managers and Administrators, System Integrators and Computer and Information Science Students.

Topic Outline:
1. B-ISDN Architecture Overview
2. ATM Architecture
3. ATM Adaptation Layer and QoS Service Architecture
Segmentation and Reassembly
CBR, VBR-rt, VBR-nrt, ABR, UBR
4. ATM Call Admission and Traffic Access Control
Traffic Descriptor, QoS Parameters, Effective Bandwidth
Generic Cell Rate Algorithm (GCRA), Leaky Bucket
Traffic Policing and Shaping
5. Packet Scheduling and Buffer Management
Weighted Fair Queueing
6. ABR Flow Control
7. LAN Emulation
8. IP over ATM
Classical IP over ATM, Multicast Address Resolution Server (MARS),
Next Hop Resolution Protocol (NHRP), and Multiprotocol over ATM (MPOA)
9. Multilayer Switching
IP Switching
10. ReSerVation Protocol (RSVP)

About the Speaker: Taieb Znati is an Associate Professor of Computer Science and Telecommunication University of Pittsburgh, Pittsburgh PA Dr. Znati obtained a Ph.D. Degree in Computer Science at Michigan State University, East Lansing, in April 1988, and a Master of Science Degree at Purdue University, West Lafayette, Indiana. He joined the faculty of the department of Computer Science with a joint appointment in the graduate program of Telecommunications at the University of Pittsburgh in the fall of 1988. Prior to that date, he was a system manager and a networking coordinator at the Case Center for computer aided design at Michigan State University. As a network coordinator, Dr. Znati developed a plan of networking requirements for the College of Engineering. At INRIA (France), Dr. Znati was part of the Syrius research group where he participated in the design and analyis of distributed database systems. Dr. Znati current research interests are in the areas of distributed systems, wired and wireless real-time communication networks to support multimedia applications, and local area networks with a particular emphasis on the design and analysis of communication protocols for distributed real-time systems. He has published numerous papers in these areas and develped different frameworks to support quality of service requirements of multimedia applications. Dr. Znati also participated in the development of several programs of continued education. He is a regular participant in "Network Focused College" education program and the Advanced Technology Innovation program at the Information Networking Institute (INI) of Carnegie Melon University. Dr. Znati was also invited to present lectures and tutorials in networking and distributed multimedia systems related topics in the United States of America and abroad. Dr. Znati chaired multiple conferences and workshops in the field of distributed multimedia systems, high speed communication networks and simulation. He was frequently invited to be a member of a panel to discuss future developments in multimedia systems and high speed networks from the perspective of researchers, developers and users.

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