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Networking and Telecommunications Research at OSU

Networking and Telecommunications Research at OSU. Raj Jain The Ohio State University Columbus, OH 43210 Jain@cse.ohio-State.Edu http://www.cse.ohio-state.edu/~jain/. Overview. Research Personnel Past Accomplishments Current Research and Research Facilities Collaborations.

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Networking and Telecommunications Research at OSU

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  1. Networking and Telecommunications Research at OSU Raj Jain The Ohio State UniversityColumbus, OH 43210Jain@cse.ohio-State.Edu http://www.cse.ohio-state.edu/~jain/

  2. Overview • Research Personnel • Past Accomplishments • Current Research and Research Facilities • Collaborations

  3. Research Personnel • Telecommunications Networks - Raj Jain, Gojko Babic, Arjan Durresi • Wireless Networks - Steve Lai and Raj Jain • Multimedia Networking - Wu-Chi Feng and Raj Jain • Protocol Engineering - Mike Liu • Other CIS Collaborators: D.K. Panda, Anish Arora, Mukesh Singhal, • EE Dept Collaborators: Mike Fitz, Jennifer Hou, Yuan Zhang, and Stan Ahalt

  4. ATM • ATM = Asynchronous Transfer Mode • ATM Net = Data Net + Phone Net • Combination of Internet method of communication (packet switching) and phone companies’ method (circuit switching) ATM AsynchronousTransfer Mode

  5. Recent Research Accomplishments • ATM Traffic Management • OCARnet: State-wide ATM Testbed • OSU National ATM Performance Testing Lab • Voice over Data Networks

  6. Destination Source Change rate to 12.3 Mbps ATM Traffic Management • We invented DECbit scheme in 1986: One Bit in the header 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.

  7. 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

  8. OCARnet Univ ofToledo ClevelandState Univ vBNS/MCI 45 Mbps NASA 155Mbps WrightStateUniv KentStateUniv OARnet Ohio Super-ComputerCenter Univ ofDayton 622 Mbps WorkgroupSwitch Univ ofCincinnati Wide-areaSwitch Ohio State Univ

  9. OSU National ATM Benchmarking Lab • Started a new effort at ATM Forum in October 1995 • Defined a new standard for frame based performance metrics and measurement methodologies • OSU benchmarking lab has 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 • Standard was sent for ballot July 1999.

  10. Current Research Projects • Real-Time ATM ABR and Software Switch • Internet Protocol (IP) Congestion Management • Quality of Service (QoS) over Internet Protocol • Wireless QoS • All-Optical Networking • Scalable Real-time Video • Internet-2 Technology Evaluation Center

  11. Old House vs New House • New needs:Solution 1: Fix the old house (cheaper initially)Solution 2: Buy a new house (pays off over a long run)

  12. Quality of Service over IP • Differentiated Services: • IP Packets get treatment depends upon ToS byte • Internet Draft on effectiveness of multiple drop preferences • Multiprotocol Label Switching (MPLS): • Internet Draft on effectiveness of MPLS Ver Hdr Len Tot Len Type of Service (ToS) Unlabeled Labeled R R R H H H H H R

  13. Wireless Networking • In collaboration with Electro-science laboratory of EE Dept (Experts in Antenna design and wireless modem communications) • Dynamically adapt to measured error characteristics: • Media Access Protocol • Transport protocol (retransmissions) • Hand-off strategies • Modem design for optimal higher-layer performance • Funded by NSF

  14. All-Optical Networking • Dense wavelength multiplexing (DWDM) allows optical switching of hundreds of wavelengths each carrying 10 Gb/s Þ Terabits/second/fiber • Applying QoS concepts to wavelength switching • Differentiated protection and wavelength rerouting using multi-protocol label switching DWDM Fiber All-OpticalSwitch

  15. Video over Data Networks • Joint project with Prof. Stan Ahalt, Yuan Zhang, and Patrick Flynn of EE Dept • Hierarchical compression of videoDifferent users can view the same compressed stream at different rates • Network feedback to adjust levels of compression • Forwarding adaptive to network feedback Network Compression ReadjustCoding Feedback

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

  17. Abilene Technology Evaluation Center • Jointly with OARnet and Ohio Supercomputer Center • Abilene = Internet-2 = High-speed (1.2 Gbps academic backbone) • All new technology to be used in Internet-2 will be tested in Ohio • OSU/CIS’s performance testing laboratory will be used for testing

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

  19. Netlab Equipment 100 Mbps 100 Mbpsuplink toInternet HP C180 FORE FORE V IDEO WITCH AVA 300 ATV 300 T ESTBED HP C180 S HP 715/100 HP 715/100 THERNET ERVER S PC HP 715/100 FARM SUN FORE -2 E HP 715/100 Ultra 1 WITCH ASX-200BX HP 715/100 AYER 60 ATM S WITCH HP 715/100 S GB L PC ISCO J280 HDD THERNET C PC E PC AST PC P RODUCTION -2 F M OC-3 OC-12 PC ACHINES HP J282/2 AYER FORE ASX-1000 L P OSSIBLE ATM S WITCH ISCO HP C240 C OC-12 /OC-3 HP C240 INK L FORE FORE 622 M BPS HP C240 HP C240 ASX-200BX ASX-200BX CONNECTION ATM S ATM S WITCH WITCH HP C240 P TO ERFORMANCE HP C240 OCARnet B ENCHMARKING T AND ESTBED HP C240 V BNS ADTECH ADTECH HP C240 AX/4000 AX/4000 REMOTE SIMULATION HP C240 P ATM ATM OOL ANALYZER ANALYZER

  20. Collaboration • Inter-Faculty: Joint funding with Wu-Chi, Steve Lai, D. Panda, A. Arora • Inter-Department: Joint funding with EE (Stan Ahalt, Jennifer Hoe, Yuan Zhang, Mike Fitz), OSC (Al Stutz), OARnet (Doug Gale, Eugene Wallis) • Inter-University: OCARnet, ODEN • With Industry: • Joint research proposals with Nokia, ... • Research Sponsored by: NASA, FORE, Nokia, ... • New Technology Seminars at Nortel, Lucent, ... • Industry Forums: IETF, ATM Forum, TIA, IEEE, Networld+Interop

  21. Summary • Recognized leader in traffic management and QoS • Current research in ATM, IP QoS, Wireless QoS, Scalable Video, and Performance testing • Excellent networking educational program, lab facilities, literature facilities, and world-wide exposure • Extensive collaboration Þ Real-world problems and real-world solution

  22. Our Publications • All our ATM Forum contributions, IETF Internet drafts and papers are available on-line at http://www.cis.ohio-state.edu/~jain/Specially see “Recent Hot Papers”and “References on Recent Advances in Networking” • Email: jain@cis.ohio-state.edu

  23. Thank You!

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