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Internet2 Engineering Update: Objectives, Working Groups, and Key Issues

This update provides an overview of the Internet2 Engineering Objectives, Working Groups, GigaPoP progress, and four key engineering issues: Large Delay-Bandwidth Products, Quality of Service, Multicast Support, and IPv6.

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Internet2 Engineering Update: Objectives, Working Groups, and Key Issues

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  1. Internet2 Engineering Update • Guy AlmesInternet2 Chief Engineer<almes@internet2.edu> • Internet2 Membership MeetingWashington — 8 October 1997

  2. Outline of the Talk • Internet2 Engineering Objectives • Working Groups • GigaPoP Progress • Four Key Engineering Issues • Large Delay-Bandwidth Products • Introducing Quality of Service • Improving Multicast Support • Introducing IPv6 • Overview of Demo Network

  3. Internet2 Engineering Objectives • Enable Advanced Applications • Strengthen the Universities in their Research / Education Missions • Pioneer Specific Technical Advances • Establish GigaPoPs as Effective Service Points

  4. Applications and Engineering Applications Motivate Enables Engineering

  5. Comments on Apps and Plumbing • Advanced applications transform high-speed plumbing into value • Advanced plumbing enables advanced applications • Profligate use of bandwidth, per se, does not make an application ‘advanced’ • Megalomaniac plumbing, per se, does not make the plumbing ‘advanced’

  6. Comments on the UniversityResearch/Education Mission • Due to their teaching mission, universities scatter researchers • University faculty and students therefore have a disproportionate need to be able to collaborate at a distance

  7. u u u u Sketch of Internet2 Architecture Interconnect: connects all the gigaPoPs to each other GigaPoPs: connect universities to the Interconnect and to other services Universities: upgrade their LANs to more than 500 Mb/s gigaPoP Interconnect u gigaPoP u gigaPoP gigaPoP u u u u gigaPoP

  8. 1997 High-speed uncongested best-efforts IPv4 T3 and OC3 will be typical; some OC12 About 15 gigaPoPs; about 45 universities Introduction of Measurements 1998 Introduce Quality of Service Improve Multicast Support Introduce IPv6 1997 vs 1998 Sets of Aspirations

  9. to address project-wide technical issues minimal constraint on natural diversity of gigaPoP technical choices complementary to groups such as the IETF Working Groups

  10. IPv6: Dale Finkelson of Univ Nebraska Measurement: David Wasley of UCOP Multicast: Dave Meyer of Univ Oregon Network Mgmt: Mark Johnson of MCNC Quality of Service: Ben Teitelbaum (staff) Routing: Steve Corbato of Univ Washington Security: Peter Berger of Carnegie Mellon Topology: Paul Love (staff) Initial Working Groups

  11. DEN -- NCAR / Univ Colorado DTW -- Michnet ORD -- MREN in Chicago MSP -- in Minneapolis PHL -- MAGPI PIT -- PSC RIC -- NetworkVirginia Operational GigaPoPs

  12. ATL -- Southern Crossroads CLE -- OARnet HOU -- Rice, Texas A&M, Univ Houston etc. RDU -- NCGigaNet Coming this Month

  13. BOS -- Boston Univ, Harvard, MIT, etc. BWI -- Univ Maryland etc DCA -- WREN GNV -- FloridaNet LEX -- SEPSCoR NYC -- NYSERnet2000 (southern) SFO -- CalREN2 (northern) Coming by end of 1997

  14. BHM -- Alabama / Gulf Central BNA -- Tennessee LAX -- CalREN2 (southern) MKC -- Great Plains Network PDX -- Oregon SEA -- Washington SYR -- NYSERnet2000 (northern) Coming early in 1998

  15. Four Key Engineering Issues • Large Delay-Bandwidth Products • Introducing Quality of Service • Improving Multicast Support • Introducing IPv6

  16. Large Delay-Bandwidth Products • As the product of delay and bandwidth grows: • The number of unacknowledged packets grows • It becomes more difficult to sustain a steady stream of data from end to end • Several consequences: • Need for direct physical paths • Tradeoff between buffering and variation in delay

  17. Introducing Quality of Service • Technical: • End-to-end vs Intermediate • Host vs Proxies • Bandwidth, Delay parameters • Administrative: • Admission Control • Measurements • Authentication

  18. Improving Multicast Support • Current MBone community is small • Many advanced applications are naturally multicast • one to many (e.g., distance education) • few to few (e.g., graduate seminars or conferences) • Scaling is hard: • Optimize for transmission lines? • Optimize for packet forwarding?

  19. IPv6 Issues • Initially this will appear to be an end in itself • We hope/expect that it will become an aid to solving other problems • Compact Routing Tables • Some help for QoS, IP options • Products will be available beginning 1997

  20. International Aspect • The university community is intrinsically international • Advanced applications connect faculty/students within our (international) community • And we’ll all be buying the same technical products / services in the future

  21. Overview of Demo Network • T3 connection to the vBNS • Microcosm of gigaPoP • Microcosm of three campuses

  22. Special thanks to … MCI vBNS group Cisco, FORE, IBM Sun, Hewlett Packard, Silicon Graphics Starburst Highway1 staff GWU and Univ Maryland staff

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