NCHC Research over Lightpaths

Transcription

1 NCHC Research over Lightpaths Te-Lung Liu, Shi-Wei Lo NCHC DATE:8/29/06

2 TWAREN Architecture 4 core nodes 20G backbone 12 GigaPops Connects HPC resources in North and South Taiwan 2

3 Optical Backbone NTU ASCC NIU STM-64 STM-16 NCU TP NDHU NCTU HC TC NCHU NTHU TN ONS15600 NSYSU NCKU CCU ONS

4 Interconnecting with L1/L2/L3 devices STM64 STM16 10GE GE NTU ASCC NCCU NIU NCU NDHU NCNU NCTU Taipei Hsinchu Taichung NHLTC Tainan NCHU NTTU NTHU ONS NSYSU NCKU CCU ONS GSR

5 TAIWANLight Stretch TWAREN to GLIF community Pacific Crossing to USA s west coast upgraded to 5 Gb/s Connections between LA, Palo Alto, Chicago, and New York are 2.5 Gb/s Connects to the rest of the world via the U.S. s Abilene Network Connection expanded to Europe in 2006 (IEEAF donated 622 Mbps of ( cable bandwidth/fiber optic 5

6 DWDM/ROADM All- Optical Design for Next-Generation TWAREN 6

7 Design Concept Migrate four core nodes to ROADM in the first stage scheduled in the mid 2010 Circuits and ROADM devices in a single bid Divided into two parts for two carriers Challenges for ROADM interconnection 7

8 Taipei ONS ONS X 2 X 2 ONS Carrier 1 Carrier 2 HsinChu X 4 X 4 Taichung Long-Distance Dark Fiber ONS ONS (SDH) λcircuit 7609V Local fiber ROADM Interconnection Tainan ONS ROADM 8

9 Alarm Correlation in Hybrid IP/Optical Network 9

10 TWAREN Optical Labs 10

11 Lab Network Topology MSTP/MSPP A (2 shelves) GE STM-64 Dark fiber 7609 A 7609 B MSTP/MSPP B (1 shelf) MSTP/MSPP C (1 shelf) 7609 C 11

12 TXP_10E SDH <-> STM64 TXP_10E SDH <-> STM64 32WSS Drop TX > 32DMX COM RX 32WSS Drop TX > 32DMX COM RX 32WSS COM <-> OSC-CSM COM 32WSS COM <-> OSC-CSM COM Node A 32WSS(W) EXP <-> 32WSS(E) EXP TXP_10E DWDM TX < 32WSS ch 1 TXP_10E DWDM RX > 32DMX ch 1 Node B OSC-CSM Line <-> Node A (W) OSC-CSM Line TXP_10E DWDM TX < 32WSS ch 1 TXP_10E DWDM RX > 32DMX ch 1 Node C OSC-CSM Line <-> Node A (E) OSC-CSM Line TXP_10E SDH <-> STM64 32WSS COM TX<-> OSC-CSM COM RX TXP_10E SDH <-> STM64 Node B 32WSS COM TX<-> OSC-CSM COM RX 32DMX COM RX<-> OSC-CSM COM TX Node C 32DMX COM RX<-> OSC-CSM COM TX TXP_10E DWDM TX < 32WSS ch 1 TXP_10E DWDM RX > 32DMX ch 1 TXP_10E DWDM TX < 32WSS ch 1 TXP_10E DWDM RX > 32DMX ch 1 12

13 Hybrid IP/Opitcal Networks Hybrid networks contain Layer3 IP / Layer2 Switching networks with underlying optical infrastructure as its backbone. Optical infrastructure may consist of DWDM/ROADM wavelength-division technology and SONET/SDH timedivision technology. 13

14 Alarm Management in Hybrid Networks If any disruption occurs in lower layer, it will cause upper layer alarms. Tens of alarms will show up in burst, which confuse network operators and engineers. Fault location identification is possible with proper alarm analysis/correlation 14

15 Correlation Diagram Top Layer Alarm 11 Alarm 12 Alarm 1n1 Layer1 Alarm 21 Alarm 22 Alarm 2n2 : : Layer2 Deep of the layer (l) Bottom Layer Alarm l1 Alarm l2 Alarm lnl Layerl 15

16 Alarm Correlation Algorithm Categorize Alarms by Layer Staring from top-most layer possible alarm x for correlation exists? Yes process next layer No No bottom-most layer reached? Yes No alarm y exists following the correlation path of x? Yes mark alarm x as correlated END process alarm y by set x=y 16

17 Alarm Correlation Diagram OSCCSM 32DMX 32WSS TXP STM c 6b 6a Loss of Signal Check along λ Check along λ Incoming Payload Signal Absent Incoming Payload Signal Absent Check along λ &same λ near Incoming Payload Signal Absent Loss of Signal near Incoming Payload Signal Absent 4 near near 7 3b 8 Loss of Signal near 10 3a CE/ML far far Transport layer failure near Carrier Loss on the LAN 1b 1c Gigabit Ethernet Lost Carrier near near Administratively down 1a 17

18 A C 7609 To GE Client CE / ML Card TXP-MR- STM G 32-WSS (MUX) 32 -DMX OSC-CSM OSC-SCM Test 4 Dark fiber to far-end Layer Alarm Descriptions Alarm source (near-end end or far-end) Affected card/module IP Lost Carrier Router A Router C GigabitEthernet IP Transport layer failure Node A Node C CE/ML Test 4 Wavelength Incoming Payload Signal Absent Node C TXP-MR MR-10G Wavelength Incoming Payload Signal Absent Node A 32-WSS Fiber Incoming Payload Signal Absent Node A OSC-CSM CSM 18

19 Results 75%, 87%, and 91% alarms are correlated in average when network disruption in IP Layer, SDH Layer, and DWDM layer respectively. 19

20 Implementation on perfsonar 20

21 Domestic/International Medical Collaborations 21

22 Medical Video Trainings in Taiwan Cross hospital medical case discussions and video trainings are periodically held by using video conference platforms. Colife (developed by NCHC) JoinNet 22

23 Medical Video Trainings The video trainings and case discussions effectively helped the doctors in Taiwan to: Share their expertise on difficult medical cases, Quickly adopt the knowledge of analysis and therapy to emergent diseases like H1N1, and Learn new methods of surgery and treatments visually and interactively. Usually over 50 hospitals and hundreds of doctors and nurses participated and benefited. 23

24 TWAREN-CESNET connection A direct lightpath that connects TW and CZ is provisioned through Pacific and Atlantic oceans in 2008/2. Joint work among TWAREN, CA*net, MANLAN, NetherLight and CESNET IPv6 and Multicast are enabled and several video streams are exchanged between TWAREN and CESNET. Further collaborations on live medical streaming and HPC computing are going on. TWAREN TW-CZ Lightpath Single hop RTT310ms Bandwidth576Mbps CESNET 24

25 TWAREN-CESNET Optical Topology Taiwan U.S.A Europe Hsinchu TAIWANLight /TWAREN : Chicago- Palo Alto- LA- Taipei- Hsinchu 7609P Hsinchu Back to back fiber CA*net4 : NYC-Chicago Alto I2 Back to back fiber Amsterdam OME 6500 Asd001a_ome02 OME 6500 Asd002a_ome02 IEEAF/VSNL AMS/TXO2- I2 ONS OME 6500 NYC/TX01 OME 6500 Asd001a_ome LE-TWHSZ- CZPRG_NL(NBD- TWAREN- CESNET) 503/0/1 HDXc GEANT2 DANTE GEANT2: ams- pra_lhc_cesnet- SURFNET_06005 s7/p1 applications STS s1/p17: Back to back fiber s1/p1 622M/s 1 GE OC-192c 25

26 Live Medical Streaming Demo 2008/9: Demo of gastrointestinal endoscopy in CESNET08 conference (8 sites in Japan, Taiwan, Italy, Spain and Czech). 26

27 Kyoto, JP CMCH, CZ Rome, IT BCN, ES NTU, TW CMH, CZ KUH, JP CTU, CZ 27

28 3D Interactive Medical Imaging Collaborated with CESNET and Brno University of Technology, we have been facilitating the 3D medical imaging of Computerized Tomography (CT) collaboration between National Taiwan University Hospital and doctors in Brno. A fully interactive way for remotely separated doctors to analyze and discuss the same subject. Enables the possibility of medical collaboration all over the world. 28

29 3D Interactive Medical Imaging 29

30 3D Interactive Medical Imaging 30

31 31 Thank You Questions?