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An Overview of the TWAREN Performance Measurement Project
Che-nan YangChe-nan Yang
The National Center for High-performance ComputingThe National Center for High-performance Computing
Aug. 26, 2005Aug. 26, 2005
at APAN Taipei 2005at APAN Taipei 2005
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TWAREN Network Infrastructure
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TP
TC
TPHC
SINICA
NDHU
NCTU
NTHU NCHU NCNU
NSYSU
NCKU
CCU
NCU
NTU
TWAREN
Optical
Production
Research
10GESTM-64/OC-192STM-16/OC-48
C7609
C7609
C7609
C7609
C7609
C7609 C7609
C7609
C7609
C7609C7609
GSR
GSR
GSR
GSR
Production NetworkProduction Network
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Research & Optical NetworkResearch & Optical Network
TWAREN
ONS15600 ONS15600
GSR
GSRGSR
ONS15454ONS15454
ONS15454
GSR
ONS15454
Taipei
Tainan
Taichung
ONS15600
C7609
ONS15454
NCHUC7609
ONS15454
NTHU
Hsinchu
Optical
Production
Research
10GESTM-64/OC-192STM-16/OC-48
GE
undeploy(#) # of Circuit
C7609
ONS15454
NTU
(2)
C7609
ONS15454
NCU
(2)
Sinica
C7609
ONS15454
(2)
C7609
ONS15454
NDHU
(2)
C7609
ONS15454
CCU
(2)
C7609
ONS15454
NCKU
(2)
C7609
ONS15454
NSYSU
(2)
C7609
ONS15454
NCNU
(2)
(2)
(4)
(2)
C7609
ONS15454
NCTU
(2)
(6) (6)
(6) (2)
(3)
(2)
(3)
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TWAREN Network Design Goals
Hybrid technology: IP (routing) and optical (dark fiber, DWDM)
Dual networks: production (2430km) and research (1721km) networks
Hierarchical topology: 3 layers (core, PoPs, end nodes)
Providing multiple servicesHighly reliable, stable and flexible
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TWAREN Active Measurement Tools
Active MeasurementRouter node
• RTT and Availability-Test among all router node pairs
• Daily, Weekly and Monthly report
Server node• RTT WeathetMap• TWAREN AMP(IPv4 and IPv6) - NLANR/MNA • Multicast Beacon• One-way delay(IPv4 and IPv6)• Throughput (IPv4 and IPv6, TCP and UDP) - Ipef
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TWAREN Passive Measurement Tools
Passive MeasurementNetflowRouter looking glassRouter configurationUser routing policy
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Router node RTT
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Router node Availability
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Distance vs. RTT
Link Speed v.s. Latency
Link Speed 64 Bytes 1500 Bytes
64kbps 8ms 140.625ms
T1 0.331606ms 5.829016ms
T3 0.011445ms 0.20118ms
FE 0.00512ms 0.09ms
GE 0.000512ms 0.009ms
10GE 0.0000512ms 0.0009ms
Speed of Light C=3x108m/s
The speed of light in the mediumV=C/N V = C/1.5 = 2x108m/s
Distance RTT
50KM 0.5ms
100KM 1ms
200KM 2ms
300KM 3ms
400KM 4ms
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The Distance of Carrier Fibre
CORE CORE CHT w CHT p EBT w EBT p
TP HC 127.2 117.6 158.6 129.8
TP TN 599.9 440 403.1 370.6
HC TC 203.6 130.6
HC TN 516.1 354.6 256.7 261
TC TN 313.5 228
POP CORE CHT w CHT p EBT w EBT p
TP NTU 6.5 46 37.3 9
TP NDHU 266.3 301.6 248.4 240.5
TP NCU 93.7 127 77.2 78.5
TP AS 23.7 28.8 46.5 34.5
TC NCHU 10.6 11.4 33.5 50.7
TC NCNU 112.6 277.6
TN CCU 94.9 256.7 96.3 96.4
TN NCKU 27.9 319.3 21.1 29.8
TN NSYSU 110.4 238.6 80.1 95.8
HC NCTU 6.3 6.6 16.5 4
HC NTHU 9.6 9.6 20.2 6
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RTT WeatherMap-1
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RTT WeatherMap-2 Why TN to CCU(two-way) shows GREEN?
- Standard data compare with the Current data
- 1.396 ms vs. 2.314 ms
POP ←→ TN
TN CCU NCKU NSYSU
TN 2.325 0.416 1.463
CCU 2.314
NCKU 0.412
NSYSU 1.471
POP ←→ TN
TN CCU NCKU NSYSU
TN 1.403 0.44 1.5
CCU 1.396
NCKU 0.416
NSYSU 1.454
Current data Standard data
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AMP Local Mesh
Led by Tony McGregor, NLANR/MNA AMP performs site-to-site active measurements
RTT, topology, loss, and on-demand throughput Currently 17(4+11+2) of AMP Client has
Operate and service AMP-IPv4 and AMP IPv6 monitoring
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AMP Local Mesh Results
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AMP International Mesh
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AMP International Mesh
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Network performance monitoring for SDSS
http://dmzmon0.deemz.net/iepm-bw/html/wan_bw_tests.html#node1.nchc_twaren.tw
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TP
TC
TNHC
ASCC
NDHU
NCTU
NTHU
NCHU
NCNU NSYSU
NCKU
CCU
CCU
NTU
TWAREN
C7609
C7609
C7609
C7609
C7609
C7609
C7609
C7609
C7609
C7609C7609
GSR
GSR
GSR
GSR
Seattle GSR12410
Chicago GSR12406
AARnet(AS7575)Abilene(AS115137)CAnet4(AS6509)GEMnet2(AS23796)KREONet2(AS17579)PacificWave(AS101)
RP.
RP.
RP.
RP.RP.
RP.
Abilene(AS11537)KREONet2 (AS17579)NREN(AS24)STARTAP(AS22335)
PIM-Sparse, MBGP, MSDP protocols Multicast connections
Peer networks: 10
CCIT
NCHC-TN
NCHC-HC
YUNTECH
TWAREN Multicast deployment Status
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TWAREN Multicast Beacon
Active measurement of : loss (%) delay (ms) jitter (ms)
http://measurement.twaren.net/beacon
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TWAREN one-way-delay Monitoring
Application created by E2Epi, Internet2
Look for one-way latency, loss Long-term or on-time value query Deployed IPv4 & IPv6 one-way delay
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NDT
Enable users to measure performance to TWAREN directly on their desktops from website
Identify specific problem(s) that affect end users
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On-line Measurement Utilitiesping & ping6traceroute & traceroute6Router Looking GlassMulticast TesterMTRIPASnslookup
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Goals
Make performance data publicly available. Provide TWAREN users with detailed and
real-time data of performance measurements.
Enable TWAREN users to trace the performance of TWAREN backbone and end-to-end network.