02 October 2001

Internet2 Network of the FutureInternet2 Network of the Future

Steve Corbato

Director, Backbone Network Infrastructure

Internet2

Steve Corbato

Director, Backbone Network Infrastructure

Internet2

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Internet2 Network of the Future

Backbone Network Infrastructure

TEAM•Steve Corbato, Director, BNI

•Heather Bruning, Abilene Project Coordinator

•Linda Charlesworth, Sr. Staff Assistant

•Chris Heermann, Sr. Network Engineer

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Internet2 Network of the Future

Current state of Abilene

Evolution of optical networking

Next phase of Abilene

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Abilene partnership

A UCAID project in partnership with• Cisco Systems• Nortel Networks• Qwest Communications

• Indiana University• Internet2 Test and Evaluation Centers (ITECs)

–North Carolina–Ohio

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Abilene status – October, 2001

IP-over-SONET (OC-48c) backbone

51 direct connections (3 pending)• 3 OC-48c connections (most recent: MAX)• 22 will connect via at least OC-12c by year end

198 primary participants • All 50 states, District of Columbia, & now Puerto Rico• 15 regional GigaPoPs support ~70% of participants• 37 sponsored participants

14 state education networks (SEGPs)• Collaboration of sponsoring member universities and

Abilene connectors

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International peering

Transoceanic R&E bandwidths still growing

Key international exchange points facilitated by Internet2 membership and the U.S. scientific community

• STARTAP STAR LIGHT – Chicago • Pacific Wave – Seattle • AMPATH – Miami• New York City – EP under development

• CUDI peering (CENIC and UTEP)

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Future of Abilene

Original UCAID/Qwest MoU amended – 10/1/01

Reaffirmation of Qwest’s original 5-year commitment to Abilene

• Now through October 1, 2006 (previously 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

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Current state of optical networking

Dense Wave Division Multiplexing (DWDM) • Current systems can support >160 10-Gbps ’s • 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 multiplicity)• Fine-grained traffic engineering

– p2p links between campus and Gigapops

• Physical manifestation of switched circuits (ATM SVCs)

Evolution of optical switching will be critical

Leading international efforts in R&E exploration• The Netherlands, Canada, STAR LIGHT (Chicago)

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Key aspects of the next backbone

IPv6• Running natively concurrently with IPv4• Replicate multicast deployment strategy• Motivations

– Resolving IPv4 address exhaustion issues– Preservation of the original End-to-End Architecture– International collaboration– Router and host capabilities

• Collaboration with Internet2 IPv6 Working Group

Network resiliency

New measurement capabilities• Opportunity for new approaches• Support of End-to-End Performance Initiative

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Next generation network deployment

October, 2001: Detailed technical design starts

February, 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

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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

• Some differences expected due to Qwest DWDM deployment

• Expect same number of backbone routers

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Optical fanout

Next generation architecture: Regional & state based optical networking projects are critical

• Three-level hierarchy: backbone, GigaPoPs, campuses• CENIC ONI, I-WIRE, SURA Crossroads, Indiana, Ohio

Collaboration with the Quilt • Regional Optical Networking project

Carrier DWDM access is now not nearly as widespread as with SONET circa 1998

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Backhaul & cost recovery

SONET backhaul model to remain in place

Gigabit Ethernet connections to be available on special case basis

Support model for 10-Gbps connections under evaluation

• We will poll potential 10-G connectors during the next 3 months

• Key factor for detailed design phase

Overall cost recovery model is expected to remain unchanged in the near term

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Conclusions

Abilene partnership with Qwest extended through 2006

Backbone to be upgraded to 10-Gbps in three phases by late 2003

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

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For more information

Other Virtual Internet2 Member Meeting events this week

• Abilene Update BoF– Wednesday 11:30a EDT (GMT –0400)

• Gigapop Transport Options– Thursday 3:00p EDT

Web: www.internet2.edu/abilene

E-mail: abilene@internet2.edu

www.internet2.edu