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Internet2 Network of the Future

Internet2 Network of the Future. Steve Corbat ó Director, Backbone Network Infrastructure CANARIE Advanced Networking Workshop Toronto 27 November 2001. Internet2 Network of the Future. Current state of Abilene Evolution of optical networking Next phase of Abilene.

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Internet2 Network of the Future

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  1. Internet2 Network of the Future Steve Corbató Director, Backbone Network Infrastructure CANARIE Advanced Networking Workshop Toronto 27 November 2001

  2. Internet2 Network of the Future • Current state of Abilene • Evolution of optical networking • Next phase of Abilene

  3. Abilene background & milestones • Abilene is a UCAID project in partnership with • Qwest Communications (SONET service) • Nortel Networks (SONET kit) • Cisco Systems (routers) • Indiana University (network operations) • ITECs in North Carolina and Ohio (test and evaluation) • Timeline • Apr 1998: Project announced at White House • Jan 1999: Production status for network • Oct 1999: IP version of HDTV (215 Mbps) over Abilene • Apr 2001: First state education network added • Jun 2001: Participation reaches all 50 states & D.C. • Nov 2001: Raw HDTV/IP (1.5 Gbps) over Abilene

  4. Abilene focus • Enabling innovative applications and services not possible over the commercial Internet • Advanced service efforts • Multicast • IPv6 • QoS • Measurement • Security • DDoS detection efforts (Arbor Networks & Asta Networks)

  5. Abilene status – November, 2001 • IP-over-SONET (OC-48c) backbone • 54 direct connections • 3 OC-48c (2.5 Gbps) connections • 22 will connect via at least OC-12c (622 Mbps) by year end • 200+ primary participants • All 50 states, District of Columbia, & now Puerto Rico • 15 regional GigaPoPs support ~70% of participants • 37 sponsored participants • 15 state education networks (SEGPs) • Collaboration of sponsoring member universities and Abilene connectors

  6. International connectivity • Transoceanic R&E bandwidths growing! • Key international exchange points facilitated by Internet2 membership and the U.S. scientific community • STARTAP & STAR LIGHT – Chicago • Pacific Wave – Seattle • Abilene now has GigE connectivity to both SL and P/WAVE • AMPATH – Miami • New York City – GigE/10GigE EP under development • CA*NET3: Seattle, Chicago, and New York • CUDI: CENIC and Univ. of Texas at El Paso • International transit service • Collaboration with CA*NET3 and STARTAP

  7. Measurement and DDoS • Traffic characterization (Ohio ITEC) • Network utilization by state education networks and AITN • Abilene Scavenger Service policing • GigaPoP pair hotspot identification • Passive measurement • Planned for Indianapolis router backbone links • Collaboration with SDSC/MOAT group • Distributed Denial of Service detection • Strong IU Global NOC interest • Asta Networks (UCSD/U of Washington roots) • Arbor Networks (U of Michigan/Merit roots) • Data privacy and anonymity policy

  8. Abilene & SCxy • Emblematic of ongoing support for HPC • Annually escalating bandwidth • SC99 Portland: OC-12c SONET (622 Mbps) • SC2000 Dallas: OC-48c SONET (2.5 Gbps) • SC2001 Denver: 2xOC-48c SONET (5 Gbps) • SC2002 Baltimore: 10-Gbps  (planned) • SCxy transit connectivity offered to domestic & international R&E nets • Backbone MTU raised to 9K bytes • Traffic engineering for SC2001 • End-to-End Performance: GigaTCP testing

  9. Abilene traffic engineering – SC2002

  10. Network of the Future:Context for the next backbone • Computational science as an emerging interdisciplinary field • Bandwidth and distributed sensing capability as the next critical parameters • Complement CPU, memory & storage • Increasingly distributed data collection and storage • NSF Distributed Terascale Facility solicitation • Emergence of optical technologies • Dense Wave Division Multiplexing (DWDM) • Important distinction: optical transport vs. switching • Much new transcontinental conduit and fiber in place; a lot of business plans abandoned… • Glut of fiber & conduit – but not bandwidth

  11. Current state of optical networking • Dense Wave Division Multiplexing (DWDM) • Current systems can support >160 10-Gbps ’s (1.6 Tbps!) • Optical growth can overwhelm Moore’s Law (routers) • Costs scale dramatically with distance • Three possible scenarios for the future • Enhanced IP transport (higher BW and circuit multiplicity) • Fine-grained traffic engineering • p2p links between campuses, HPC centers, & Gigapops • Physical manifestation of switched circuits (a la ATM SVCs) • Evolution of optical switching will be critical • Leading international efforts in R&E exploration • The Netherlands, Canada, STAR LIGHT (Chicago)

  12. National optical networking options • 1 - Incremental wavelengths • Provision 10-Gbps ’s from provider(s) in the same way that SONET circuits are done for Abilene now • Exploit smaller incremental cost of additional ’s • 2 - Dim Fiber • Partnership with a facilities-based provider • Acquisition of fiber IRU and subsequent O&M agreement for inter-PoP services (amplifiers, regenerators, DWD MUXes?) • BSA’s metro condominium fiber concept on the national scale • National footprint of 1-2 fiber pairs • IRU for the fiber alone could cost $10-20M • Most likely awaits the availability of lower-cost optical transmission equipment

  13. Future of Abilene • Original UCAID/Qwest MoU amended on October 1, 2001 • Extension of Qwest’s original commitment to Abilene for another 5 years – 10/01/2006 • Originally expired March, 2003 • Upgrade of Abilene backbone to optical transport capability - ’s • x4 increase in the core backbone bandwidth • OC-48c SONET (2.5 Gbps) to 10-Gbps DWDM • Capability for flexible provisioning of ’s to support future point-to-point experimentation & other projects

  14. Key aspects of next backbone - I • Native IPv6 • Motivations • Resolving IPv4 address exhaustion issues • Preservation of the original End-to-End Architecture model • p2p collaboration tools, reverse trend to CO-centrism • International collaboration • Router and host OS capabilities • Run natively - concurrent with IPv4 • Replicate multicast deployment strategy • Close collaboration with Internet2 IPv6 Working Group on regional and campus v6 rollout • Addressing architecture

  15. Key aspects of the backbone - II • Network resiliency • Abilene ’s will not be protected a la SONET • Increasing use of videoconferencing/VoIP impose tighter restoration requirements (<100 ms) • Options: • Currently: MPLS/TE fast reroute • Would prefer IP-based IGP fast convergence • Addition of new measurement capabilities • Enhance active probing • Latency & jitter, loss, TCP throughput • Add passive measurement taps • Support of Internet2 End-to-End Performance Initiative • Intermediate performance beacons

  16. Next generation network deployment • October, 2001: Detailed technical design starts • Spring 2002: PoP upgrades start • deployment in three phases • April, 2002 – Phase 1 • October, 2002 – Phase 2 • April, 2003 – Phase 3 • October 2003 - Completion of 10-Gbps upgrade

  17. Network design overview • Overall next generation topology is expected to be very similar to current design • Previous iterations to router locations • Washington DC, Chicago, Sunnyvale, Houston • A few differences expected due to Qwest DWDM topology • Expect same number of backbone routers (12)

  18. Regional optical fanout • Next generation architecture: Regional & state based optical networking projects are critical • three-level hierarchy: Backbone, GigaPoPs/ARNs, campuses • Leading examples • CENIC ONI (California), I-WIRE (Illinois), • SURA Crossroads (Southeastern U.S), Indiana, Ohio • Collaboration with the Quilt • Regional Optical Networking project • U.S. carrier DWDM access is now not nearly as widespread as with SONET circa 1998

  19. The Quilt • A UCAID project support regional advanced networking initiatives • 15 charter GigaPoPs (2 more have joined since) • Connections typically support 4 or more research universities • EDUCAUSE and SURA • Quilt GigaPoPs support over 70% of Abilene participants • Initial projects • Commodity Internet Services • Regional Optical Networking (ties into Internet2 NoF) • Measurement (ties into Internet2 E2E Performance) • Led by Wendy Huntoon (Pittsburgh SC/CMU)

  20. Conclusions • Abilene future • UCAID’s partnership with Qwest extended through 2006 • Backbone to be upgraded to 10-Gbps in three phases starting spring 2002 • Capability for flexible  provisioning in support of future experimentation in optical networking • Overall approach to the new technical design and business plan is for an incremental, non-disruptive transition • Follow-on network most likely will be developed around a national dark fiber facility and will utilize next generation optical transport technology

  21. For more information • Web: www.internet2.edu/abilene • E-mail: abilene@internet2.edu

  22. www.internet2.edu

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