1. Internet2 Engineering Update  Guy Almes Internet2 Chief Engineer  Internet2 Membership Meeting Washington — 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 Engineering MotivateEnables

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 University Research/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. Sketch of Internet2 Architecture Interconnect gigaPoP u u u u u u u u 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 u u gigaPoP

8. 1997 vs 1998 Sets of Aspirations  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

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

10. Initial Working Groups  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)

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

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

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

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

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

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