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Networking Research At OSU

Networking Research At OSU. Raj Jain Professor of Computer and Information Sciences The Ohio State University Columbus, OH 43210-1277 http://www.cse.ohio-state.edu/~jain/. Our Team. Faculty : Dr. Raj Jain  Dr. Mike Liu Dr. Steve Lai  Dr. Wu-Chi Feng

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Networking Research At OSU

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  1. Networking Research At OSU Raj Jain Professor of Computer and Information Sciences The Ohio State University Columbus, OH 43210-1277 http://www.cse.ohio-state.edu/~jain/

  2. Our Team • Faculty: • Dr. Raj Jain  Dr. Mike Liu • Dr. Steve Lai  Dr. Wu-Chi Feng • Dr. Gojko Babic  Dr. Arjan Durresi • Ph.D. Students:  Rizwan Mir • Rohit Goyal Sonia Fahmy • Bobby Vandalore X. Cai • M.S. Students: Sohail Munir • Justin Dolske  J. Iyer • S. Varadarajan Mukul Goyal

  3. Networking Research at OSU • ATM Networks - Raj Jain and Gojko Babic • Wireless Networks - Steve Lai • Multimedia Networking - Wu Chi Feng and Raj Jain • Protocol Engineering - Mike Liu

  4. Overview • Networking Trends • ATM Traffic Management • OSU National ATM Performance Testing Lab • OCARnet: Ohio University Network • Voice/Video over ATM

  5. Trends • Communication is more critical than computing • Greeting cards contain more computing power than all computers before 1950. • Genesis's game has more processing than 1976 Cray supercomputer. • Internet: 0.3 M hosts in Jan 91 to 9.5 M by Jan 96Þ More than 5 billion (world population) in 2003

  6. Stone Age to Networking Age • Microwave ovens, stereo, VCRs, had some effect. But, Stone, iron, …, automotive, electricity, telephone, jet plane,…, networks caused a fundamental change in our life style • In 1994, 9% of households with PC had Internet link.By 1997, 26%. Soon 98% … like TV and telephone. • URL is more important than a company's phone number. (54 URLs in first 20 pages of March’97 Good Housekeeping.) • Better communication Þ Distance not important

  7. Social Impact of Networking • No need to get out for • Office • Shopping • Education • Entertainment • Virtual Schools • Virtual Cash • Virtual Workplace • (55 Million US workers will work remotely by 2000)

  8. Cave Persons of 2050

  9. Life Cycles of Technologies Number of Problems Solved You are here Time Research Productization

  10. 40M 30M 20M 10M Jan91 Jan06 Jan97 Internet Technology • New Challenges: Exponential growth in number of users. Exponential growth in bandwidth per user. Traffic management, Security, Usability, ... HostCount

  11. ATM • ATM Net = Data Net + Phone Net • Combination of Internet method of communication (packet switching) and phone companies’ method (circuit switching) ATM

  12. ATM vs Phone Networks • Current phone networks are synchronous (periodic). ATM = Asynchronous Transfer Mode • Phone networks use circuit switching. ATM networks use “Packet” Switching • In phone networks, all rates are multiple of 8 kbps.With ATM service, you can get any rate.You can vary your rate with time. • With current phone networks, all high speed circuits are manually setup. ATM allows dialing any speed. 125 ms

  13. ATM vs Data Networks • Internet Protocol (IP) is connectionless.You cannot reserve bandwidth in advance.ATM is connection-oriented. You declare your needs before using the network. • Routers cannot guarantee bandwidth or delay. ATM networks reserve bandwidth and buffers. • In IP, each packet is addressed and processed individually. Inefficient for continuous medi • IP has little traffic management. ATM has 1996 traffic management technology.Required for high-speed and variable demands.

  14. Traffic Management • Invented DECbit scheme in 1986: Bit Þ Go up/Down • Used now in Frame Relay (FECN) • Used in ATM (EFCI) • In July 1994, we proposed Explicit Rate Approach.Current standard. • Two patents. Collaboration with industry. Destination Source Change rate to 12.3 Mbps

  15. Computation Facilities • Numerous high-powered computers: 1×715/64 (2.6 FP95) 6×715/100 (4.3 FP95), 9×C180s (18.7 FP95), 1×J282/2 (19.3 FP95)6 P5-200 Desktops + 9 Laptop PCs • J-280 fileserver with 64 GB • 100 Mbps Ethernet and 155 Mbps ATM • 622 Mbps Connection to OCARnet testbed • Several switches with speeds from 25 to 622 Mbps • World-class ATM Testing Lab with 25, 155, and 622 Mbps testing monitors

  16. HP 715/100 Qty. 6 HP 715/100 Switched Ethernet 60 GB J280 PC Qty. 8 HP J282/2 PC 155 Mbps HP C180 Qty. 9 HP C180 Facilities (Cont) 10 Mbps uplink to the Internet (Planned upgrade to 100Mbps) Fast Ethernet Switched (Planned) 622 Mbps OCARNET FORE ASX 200BX ATM Switch

  17. OCARnet • Ohio Computing and Communications ATM Research Network • Nine-Institution consortium lead by OSU • Ohio State University • Ohio Super Computer Center • OARnet • Cleveland State University • Kent State University • University of Dayton • University of Cincinnati • Wright State University • University of Toledo KSU CSU UT vBNS WSU Cleveland155 M OAR UD OSC OSU 622 M UC

  18. Cleveland State Univ Univ of Toledo To vBNS/MCI 45 Mbps Toledo Cleve-land To NASA 155 Mbps Wright State Univ 155 Mbps Kent StateUniv 1.5 Mbps Kent Dayton 622 Mbps OARnet 1.5 Mbps OhioSupercomputerCenter Univ ofDayton Cincinnati Columbus 1.5 Mbps 622 Mbps WAN Switches Univ of Cincinnati Workgroup Switches OCARnet Ohio State Univ

  19. Voice/Video over ATM • Silence suppression Þ Unused bandwidth can be used by dataCannot be used by voice. • Hierarchical compression of VideoDifferent users can see different bandwidth video • Multipoint ABR • Real-time ABR

  20. Video Source Video Source Composite Composite Workstation FORE AVA 300 FORE AVA 300 FORE ATV 300 FORE ATV 300 Video Testbed OARNET OSU 155 Mbps 622 155 Mbps Mbps FORE FORE 155 Mbps ASX 200BX ASX 1000 ATM Switch ATM Switch Composite Video Monitor Video Monitor

  21. OSU National ATM Benchmarking Lab • Started a new effort at ATM Forum in October 1995 • Defining a new standard for frame based performance metrics and measurement methodologies • We have a measurement lab with the latest ATM testing equipment. Funded by NSF and State of Ohio. • The benchmark scripts can be run by any manufacturer/user in our lab or theirs. • Modeled after Harvard benchmarking lab for routers

  22. PC PC (To control and (To control and monitor the monitor the analyzer) analyzer) ADTECH ADTECH AX/4000 AX/4000 ATM Analyzer ATM Analyzer Performance Testing Facility OCARNET Possible 622 Mbps Link Possible 155 Mbps 155 Mbps 622 Mbps or 25 Mbps or 25 Mbps or 155 Mbps Links Links Link FORE FORE ASX 200BX ASX 200BX ATM Switch ATM Switch

  23. CIS Networking Courses • CIS 677: Introduction to Networking • Offered every quarter • CIS 678: Internetworking • Offered once a year - Winter quarter • CIS 777: Telecommunication Networks • Offered once a year - Spring quarter • CIS 788: Recent Advances in Networking (Raj Jain) • CIS 788: Wireless Networking (Steve Lai) • CIS788: Multimedia Networking (Wu-Chi Feng) • CIS788: Protocol Engineering (Mike Liu)

  24. Summary • Leading the ATM traffic management • Leading ATM Performance benchmarking • Leading regional ATM networks • Emphasizing topics of interest to industry • Good computing/experimental resources

  25. Our Publications All our ATM Forum contributions and papers are available on-line at http://www.cis.ohio-state.edu/~jain/ • Specially see “Recent Hot Papers”

  26. Thank You!

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