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Campus Focused Workshop on Advanced Networking. Paul Love Chair, Topology Working Group Campus Workshop Houston 10-11 April 2002. Outline. Internet2 Engineering Objectives Hopes for & Threats to End-to-End Performance A few words on Abilene. Engineering Objectives of Internet2. - PowerPoint PPT Presentation
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Campus Focused Workshop on Advanced NetworkingCampus Focused Workshop on Advanced Networking
Paul Love
Chair, Topology Working Group
Campus Workshop
Houston
10-11 April 2002
Paul Love
Chair, Topology Working Group
Campus Workshop
Houston
10-11 April 2002
10 April 2002 2
Outline
Internet2 Engineering Objectives
Hopes for & Threats to End-to-End Performance
A few words on Abilene
10 April 2002 3
Engineering Objectives of Internet2
Provide our members with superlative networking
• Performance• Functionality• Understanding
Make superlative networking strategic to research & education
10 April 2002 4
End-to-End: Challenge, Aspirations & Threats
Support services of advanced networks E2E(eyeball2eyeball)
Performance• Current target: 80Mb/s across the country• Multiplies where possible
Functions• Multicast• IPv6• Quality of Service• Measurement• Security
10 April 2002 5
What are our Aspirations?
Switched 100BaseT + well-provisioned Internet2 networking @ 80 Mb/s (for now)
• But user expectations and experiences vary widely
• Don’t take the easy way out• Boost expectations & experiences - raise the bar
Raise the bar again – work hard to stay out there
10 April 2002 6
Threats
Distance BW = C x packet-size / ( delay x sqrt(packet-loss ))
(Mathis, Semke, Mahdavi, and Ott, CCR, July 1997)
Fiber: dirty connections, bad light/connectors
Switches: full/half duplex & 10/100 mismatches, head of line blocking
Routing: Asymmetric, increased distance
Provisioning: a “straw” somewhere
Host: OS & TCP stack, H/W, Apps
10 April 2002 7
Abilene: Current Core
10 April 2002 8
Abilene Network Map
Sacramento
Los Angeles
Washington
Abilene International PeeringSTAR TAP/Star LightAPAN/TransPAC, Ca*net3, CERN, CERnet, FASTnet, GEMnet, IUCC, KOREN/KREONET2, NORDUnet, RNP2, SURFnet, SingAREN, TAnet2
NYCMBELNET, CA*net3,
GEANT*,HEANET,
JANET, NORDUnet
Pacific WaveAARNET, APAN/TransPAC, CA*net3, TANET2
SNVAGEMNET, SINET, SingAREN, WIDE
LOSAUNINET
AMPATHREUNA, RNP2
RETINA (ANSP)
OC3-OC12
El Paso (UACJ-UT El Paso)CUDI
San Diego (CALREN2)CUDI
* ARNES, CARNET, CESnet, DFN, GRNET, RENATER, RESTENA, SWITCH, HUNGARNET, GARR-B, POL-34, RCCN, RedIRIS
09 January 2002
10 April 2002 10
Abilene: 10Gb/s Upgrade
10 April 2002 11
Raw HDTV/IP testing
Packetized raw HDTV (1.5 Gbps) • ISIe, Tektronix, & UW project/DARPA support
Connectivity and testing support• P/NW & MAX Gigapops, Abilene and DARPA Supernet, Level(3)
SC2001 public demo• November, 2001• SEA -> DEN via L(3)
OC-48c SONET
10 April 2002 12
Raw HDTV/IP Demo
DARPA PIs Meeting: SEA->DC area 1/6/02• 18 hrs of continuous, single-stream raw HD/IP• UDP jumbo frames: 4444 B packet size• Application level measurement
– 3 billion packets transmitted– 0 packets lost, 15 resequencing episodes
• e2e network performance – Loss: <8x10 -10 (90% confidence level)– Reordering: 5x10 –9
• Transcontinental 1-Gbps TCP (std 1.5 kB MTU) requires loss at the level of 3x10 –8 or lower
10 April 2002 13
Where things are at Present
Infrastructure of large capacity• Besides the HDTV/IP demos we have examples of 240Mb/s flows
• But flows aren’t predictable – even 40Mb/s• People don’t know what they should expect
10 April 2002 14
Why Care?
Faculty needs keep advancing:• Effective access to remote facility: quickly move large datasets. PPDG: 400 Mb/s to CERN by 2003
• Interactive access: video or control or VoIPVery low loss/jitter
We (in several senses) need to deliver
Low aspirations are dangerous to us, to our goals
10 April 2002 16
Baseline BW Requirements for the US-CERN Transatlantic Link
0
2000
4000
6000
8000
10000
Link Bandwidth (Mbps)
Bandwidth (Mbps) 310 622 1250 2500 5000 10000
FY2001 FY2002 FY2003 FY2004 FY2005 FY2006
With thanks to Harvey B Newman, CIT
www.internet2.edu