Transcript Campus Focused Workshop on Advanced Networking

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
10 April 2002
2
Engineering Objectives of
Internet2
Provide our members with superlative
networking
• Performance
• Functionality
• Understanding
Make superlative networking strategic to
research & education
10 April 2002
3
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
4
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
5
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
6
Abilene: Current Core
10 April 2002
7
Abilene Network Map
10 April 2002
8
09 January 2002
Abilene International Peering
STAR TAP/Star Light
Pacific Wave
AARNET,
APAN/TransPAC,
CA*net3,
TANET2
APAN/TransPAC, Ca*net3, CERN, CERnet, FASTnet, GEMnet,
IUCC, KOREN/KREONET2, NORDUnet, RNP2, SURFnet,
SingAREN, TAnet2
NYCM
SNVA
BELNET,
CA*net3,
Washington
GEANT*,
HEANET,
JANET,
NORDUnet
GEMNET,Sacramento
SINET,
SingAREN, WIDE
LOSA
Los Angeles
UNINET
OC3-OC12
San Diego (CALREN2)
CUDI
El Paso (UACJ-UT El Paso)
CUDI
AMPATH
REUNA, RNP2
RETINA (ANSP)
* ARNES, CARNET, CESnet, DFN, GRNET, RENATER, RESTENA, SWITCH, HUNGARNET, GARR-B, POL-34, RCCN, RedIRIS
Abilene: 10Gb/s Upgrade
10 April 2002
10
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
11
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
12
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
13
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 VoIP
Very low loss/jitter
We (in several senses) need to deliver
Low aspirations are dangerous to us, to our
goals
10 April 2002
14
Baseline BW Requirements
for the US-CERN Transatlantic Link
Link Bandwidth (Mbps)
10000
8000
6000
4000
2000
0
Bandwidth (Mbps)
With thanks to Harvey B Newman, CIT
FY2001 FY2002 FY2003 FY2004 FY2005 FY2006
310
622
1250
2500
5000
10000
10 April 2002
16
www.internet2.edu