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  • This is a general overview presentation about Internet2. Internet2 is a consortium, led by US universities, which is recreating the partnership among academia, industry and government that fostered today’s Internet in its infancy.
  • 20010310-AAMC-Corbato.ppt

    1. 1. National R&E networking infrastructure AAMC GIR MEETING WASHINGTON, DC Steve Corbat ó , Director of Backbone Network Infrastructure 10 March 2001
    2. 2. Key points <ul><li>An overview of the evolving national R&E network infrastructure </li></ul><ul><li>Why isn’t high performance networking plug-and-play yet and what can we do abut this? </li></ul><ul><li>Going optical – exposing the core of telecommunications </li></ul><ul><li>Watch out for genomics! </li></ul>
    3. 3. Advanced U.S. research university connectivity requirements <ul><li>Research testbed </li></ul><ul><ul><li>configurable, breakable, measurable infrastructure </li></ul></ul><ul><ul><li>serving computer science research and advanced engineering </li></ul></ul><ul><ul><li>traditional province of DARPA </li></ul></ul><ul><li>Advanced service/application deployment net </li></ul><ul><ul><li>standards based, 7x24 operation expectation (NSFnet  vBNS  Abilene) </li></ul></ul><ul><li>National education intranet </li></ul><ul><ul><li>interconnecting all K-20 educational institutions/networks to enable applications and services unavailable over the commercial Internet </li></ul></ul><ul><li>Commercial entities (high perf. connectivity) </li></ul>
    4. 4. Unique features of Internet2 environment <ul><li>Per capita available bandwidth O(10-100) higher than over the commercial Internet </li></ul><ul><ul><li>TCP flows of  0.5 Gbps possible </li></ul></ul><ul><li>Active advanced service deployment efforts </li></ul><ul><ul><li>Native multicast most widely deployed </li></ul></ul><ul><li>Commitment to open network management and active measurement </li></ul><ul><li>Collaborative relationship with GigaPoPs and research university campus technical communities </li></ul><ul><li>Commitment to the original end-to-end architecture and performance visions </li></ul>
    5. 5. Abilene – February, 2001 <ul><li>Inflection point in network development </li></ul><ul><ul><li>OC-48c (2.5 Gbps) IP-over-SONET backbone </li></ul></ul><ul><ul><li>53 current and pending connections in 32 states </li></ul></ul><ul><ul><li>175+ participants in 47 states and D.C. </li></ul></ul><ul><ul><li>Ongoing strong partnership </li></ul></ul><ul><ul><ul><li>Cisco, Nortel, Qwest, Indiana Univ., ITECs (NC and OH) </li></ul></ul></ul><ul><li>Increasing backbone utilization </li></ul><ul><ul><li>Characteristic exponential growth </li></ul></ul><ul><ul><li>O(OC-12c) peak utilization on some links </li></ul></ul><ul><ul><li>Traffic doubling time: 7 months </li></ul></ul>
    6. 7. A new perspective on utilization <ul><li>“ Why worry? Abilene only has 10-25% utilization on an OC-48c (2.5 Gbps) backbone” </li></ul><ul><li>But we have exponential growth! </li></ul><ul><li>“ September surprise” in academic nets </li></ul><ul><li>Excess capacity is needed to motivate and to enable paradigmatic apps & services </li></ul><ul><li>Last week’s Nisqually earthquake reminded me that outside of the Richter scale , we don’t think exponentially on a daily basis </li></ul>
    7. 8. “ Postel scale” <ul><li>A means to stop thinking linearly about Internet bandwidth utilization </li></ul><ul><li>P = 3 + log 10 (Utilization/Capacity) </li></ul><ul><li>Typical values (range: 3  -infinity) </li></ul><ul><li>100% (saturation) P=3 </li></ul><ul><li>10% P=2 … </li></ul><ul><li>0.1% P=0 (floor?) </li></ul>
    8. 9. Two years later… <ul><li>A backbone is exceeding 30% utilization </li></ul><ul><li>Network manager : “Yikes, our backbone is now running at 2.5 out of a possible 3 on the Postel Scale” </li></ul><ul><li>CIO : “Wow, thanks for catching this. Let’s get that upgrade started now.” </li></ul>
    9. 10. Abilene annual connection fees $430,000 SONET $495,000 OC-48c $290,000 ATM $280,000 ATM/1 PVC & 1 BGP peering $270,000 SONET $320,000 OC-12c ($110,000) SONET & ATM $110,000 OC-3c New Previous
    10. 11. End-to-End (e2e) Performance Initiative <ul><li>Human to Human Collaboration Experience </li></ul><ul><ul><li>User perception EYEBALL </li></ul></ul><ul><ul><li>Application CORE APP </li></ul></ul><ul><ul><li>Operating system </li></ul></ul><ul><ul><li>Host IP stack STACK </li></ul></ul><ul><ul><li>Host network card </li></ul></ul><ul><ul><li>Local Area Network (LAN) JACK </li></ul></ul><ul><ul><li>Campus backbone network </li></ul></ul><ul><ul><li>Campus connection to regional network/GigaPoP </li></ul></ul><ul><ul><li>GigaPoP connection to Internet2 national backbone </li></ul></ul><ul><ul><li>International connections </li></ul></ul>
    11. 12. New telecom business models <ul><li>Kudos to [email_address] Bandwidth Pricing Group </li></ul><ul><li>Carriers - two emerging service models </li></ul><ul><li> providers </li></ul><ul><li>Network host (dim fiber/condominium) </li></ul><ul><li>Traders </li></ul><ul><li>Bandwidth as the new fungible unit </li></ul><ul><li>Should accelerate provisioning - velocity </li></ul><ul><li>Basis for a national testbed? </li></ul><ul><li>Little altruism (cf. Calif. energy crisis) </li></ul>
    12. 13. Gigapop Transport Options: Topics for future discussion <ul><li>RoW, conduit, dark & dim fiber,  ’s </li></ul><ul><li>IRU arrangements </li></ul><ul><li>Optical technologies (amps, repeaters, DWDM, optical switching) </li></ul><ul><li>DWDM interoperability  </li></ul><ul><li>10 Gigabit Ethernet vs. OC-192c </li></ul><ul><li>Strategic carrier hotel development </li></ul><ul><li>Collocation for interconnection, peering (not data centers) </li></ul>
    13. 15. Next steps for Abilene <ul><li>Continuing advanced service deployment </li></ul><ul><li>Playing our part in E2E Performance Initiative </li></ul><ul><li>Ongoing planning for Network of the Future </li></ul><ul><li>Close collaboration with the Gigapops and new fiber intiatives </li></ul><ul><li>Expanding access to broader education community in support of advanced networking </li></ul>
    14. 16. For more information <ul><li>[email_address] </li></ul><ul><li>www.internet2.edu/abilene </li></ul><ul><li>www.internet2.edu/e2eperf </li></ul>