Transcript 20020507-Plenary-Corbato

Next Generation Abilene
Internet2 Member Meeting
Washington DC
7 May 2002
Partnership approach
The Abilene Network is a UCAID project
done in partnership with
• Cisco Systems (routers, switches, and access)
• Juniper Networks (routers)
• Nortel Networks (SONET kit)
• Qwest Communications (SONET & DWDM circuits)
• Indiana University (network operations center)
• Internet2 Test & Evaluation Centers (ITECs)
– North Carolina and Ohio
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Abilene – May, 2002
IP-over-SONET backbone (OC-48c, 2.5 Gbps)
53 direct connections
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4 OC-48c connections
1 Gigabit Ethernet trial
23 will connect via at least OC-12c (622 Mbps) by 1Q02
Number of ATM connections decreasing
215 participants – research universities & labs
• All 50 states, District of Columbia, & Puerto Rico
• 15 regional GigaPoPs support ~70% of participants
Expanded access
• 50 sponsored participants
– New: Smithsonian Institution, Arecibo Radio Telescope
• 23 state education networks (SEGPs)
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Packetized raw High Definition
Television (HDTV)
Raw HDTV/IP – single UDP flow of 1.5 Gbps
• Project of USC/ISIe, Tektronix, & U. of Wash (DARPA)
• 6 Jan 2002: Seattle to Washington DC via Abilene
– Single flow utilized 60% of backbone bandwidth
• 18 hours: no packets lost, 15 resequencing episodes
• End-to-end network performance (includes P/NW & MAX
GigaPoPs)
– Loss: <0.8 ppb (90% c.l.)
– Reordering: 5 ppb
• Transcontinental 1-Gbps TCP
requires loss of
– <30 ppb (1.5 KB frames)
– <1 ppm (9KB jumbo)
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End-to-End Performance:
‘High bandwidth is not enough’
Bulk TCP flows (transfers > 10 Mbytes)
• Current median flow rate over Abilene: 1.9 Mbps
– 95th percentile: 7.0 Mbps
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Future of Abilene
Original UCAID/Qwest agreement
amended on October 1, 2001
Extension of MoU for another 5 years –
until October, 2006
• Originally expired March, 2003
Upgrade of Abilene backbone to optical
transport capability - ’s (unprotected)
• x4 increase in the core backbone bandwidth
–OC-48c SONET (2.5 Gbps) to 10-Gbps DWDM
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Key new aspects of next generation
Abilene backbone
High-performance IPv6 – next generation
• Run natively - concurrent with IPv4
• Replicate multicast deployment strategy
• Close collaboration with Internet2 IPv6 WG
Enhanced, differentiated measurement
capabilities
• Active measurement: periodic network probes (incl. flows)
• Passive measurement: traffic matrix, SNMP, & routing
Computer science research via ‘Abilene Observatories’
• End-to-End Performance beacons
Network resiliency
• Abilene ’s will not be protected circuits as with SONET
• Need restoration times under 100 ms – VoIP & videoconf
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Next generation router selection
Extensive router specification and test plan
developed
• Team effort: UCAID staff, NOC, NC and Ohio ITECs
• Discussions with four router vendors
Tests focused on next gen advanced services
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High performance TCP/IP throughput
High performance multicast
IPv6 functionality & throughput
Classification for QoS and measurement
3 router platforms tested & commercial ISPs
referenced
 New Juniper T640 platform selected
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Optical networking scaling factors
2 TeraGrid routing nodes
11 Next Generation Abilene routers
53 Abilene connectors
215 Abilene participants (univs & labs)
But…
30-60 DWDM access nodes in leading
viable carriers’ U.S. networks
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Regional optical fanout
Next generation architecture: Regional & state
based optical networking projects are critical
• Three-level hierarchy: Backbones, GigaPoPs, campuses
• Leading examples
– CENIC ONI (California), I-WIRE (Illinois), I-LIGHT (Indiana)
• State-based projects can be viewed as cost sharing
Collaboration with the Quilt
• Regional Optical Networking project
• Interface with next generation Abilene and future projects
U.S. carrier DWDM access is not widespread
• 30-60 cities for DWDM now
• ~120 cities for SONET (circa 1998)
• Further expansion constrained by current telecom crunch
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Optical network project
differentiation
Distance
scale (km)
Examples
DWDM
Metro
< 60
Equipment
UW(SEA) Dark fiber & end
terminals
USC/ISI(LA)
State/
< 500
I-WIRE (IL)
Add OO
Regional
(ULH:
<2500)
CENIC ONI
amplifiers
I-LIGHT (IN)
Pacific LR
Add OEO
TeraGrid
regenerators
NG Abilene
& O&M $’s
Extended
Regional/
National
> 500
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Conclusions – Abilene future
Backbone upgrade project underway
• Partnership with Qwest extended thru 2006
• Juniper T640 routers selected for backbone
• 10-Gbps backbone  deployment starts this fall
Advanced service foci
• Native, high-performance IPv6
• Enhanced, differentiated measurement
• Network resiliency
Incremental, non-disruptive transition
Complementary to and collaborative with NSF’s
TeraGrid
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