1 Design of New TWAREN C. Eugene Yeh, Deputy Director The National Center for High-performance Computing 22 nd APAN Meeting Singapore, July 19, 2006

2 Contents  Introduction to NCHC & TWAREN  TWAREN Current Architecture  TWAREN New Architecture  Summary

3 NCHC NCHC  NCHC: National Center for High-performance Computing  Key Historical Marks  1991: The Executive Yuan approved establishment, under NSC.  1993: Completed HQ building at Hsinchu SP.  1998: Started an NREN service.  2002: Established a branch at Tainan SP in southern Taiwan.  2003: Become an non-profit org under NARL.  2006: Establishes another branch at Taichung SP in central Taiwan.  Mission  Resources and Services: Computing Facility, Storage, Visualization, Network, Scientific Database, Application Software  Research and Development: Simulation and Modeling, Grid Technology, Middleware  Education, Training & Outreach

4  TWAREN: TaiWan Advanced Research and Education Network, is t he only national academic and research backbone in Taiwan that provides layer one optical lightpaths and layer three routing.  Provides production and research network connections among universities and research centers in Taiwan and international peering.  3-layer, IP + optical Introduction to TWAREN

5 TWAREN Nowadays Production Network: Lease-based optical backbone at 20 Gbps. Dual vendor-provisioning at 10 Gbps each. Research & Optical Network: Acquired dark fiber segments. Each GPoP at 20 Gbps. in experimental use Tainan NCHU CCU Sinica NTU NCU NCTU NTHU NCKU NSYSU Hsinchu Taipei Taichung Taipei NCU NDHU NCTU NTHU CCU NCKU NSYSU NCNU NCHU Sinica NTU Hsinchu Taichung Tainan

6 Production Network 台北 台中 台南 新竹 中央研究院 東華大學 交通大學 清華大學 中興大學 暨南大學 中山大學 成功大學 中正大學 中央大學 台灣大學 TWAREN Optical Production Research 10GE STM-64/OC-192 STM-16/OC-48 GE 建議電路 C7609 GSR

7 Research Network Optical Production Research TWAREN ONS15454 ONS GE STM-64/OC-192 STM-16/OC-48 GE Proposed (#) Link number GSR (4) (2) 台中 C7609 ONS15454 (2) 中央研究院 C7609 ONS15454 (2) 東華大學 C7609 ONS15454 (2) 清華大學 C7609 ONS15454 (2) 暨南大學 C7609 ONS15454 (2) 中山大學 C7609 ONS15454 (2) 成功大學 C7609 ONS15454 (2) 台灣大學 GSR (6) (2) 台北 C7609 ONS15454 (2) 中央大學 C7609 ONS15454 (2) 中正大學 GSR (6) (3) ONS15454 新竹 ONS15600 C7609 ONS15454 (2) 中興大學 ONS15454 ONS15600 (6) (3) GSR 台南 C7609 ONS15454 (2) 交通大學

8 TAIWANLight 2006

9 TWAREN NEW ARCHITECTURE

10 Goals of New TWAREN (1)  A physical network serves multiple purposes and logical networks  production, general use  general research  experiment, testbed, special research  Provisioning services on multiple layers  L1 lightpaths  L2 VLAN  L3 IP

11  High reliability & availability (99.9% -> 99.99%)  fault tolerance  automatic protection if possible  automatic failure detection and locating  Good performance: minimum number of routers between GigaPoPs  Flexible: can be easily and quickly to set up a logical network per user’s request  People skills: Optical network OAM Goals of New TWAREN (2)

12 Design Considerations  State-of-art technology  Optical + IP  MPLS, VPLS, GMPLS  Architectural Design  No single point-of-failure  Scalable  Economics  Cost of circuits  Use available equipment

13 TWAREN Interconnectivity

14 New TWAREN Circuit Diagram ASCC NCU NTU NCCU NTHU NCTU NCNU NCHU CCU NCKU NSYSU NIU NDHU NHLTC NTTU Taipei Hsinchu Taichung Tainan STM-16 GE STM-64 (2)

15 Connection Approach  Access Layer to Distribution Layer  Fast Ethernet, Gigabit Ethernet  Distribution Layer to Core Layer  Lightpath, mainly STM-4  Between Cores  Lightpath, mainly STM-16 & STM-64  Traffic aggregation by L2 switch  MPLS (no need for fully mesh)  No router

16 IP + MPLS+ Optical Networking MPLS TC TP TN L MPLS15454 L MPLS L2 MPLS L2 HC NCKU NSYSU CCU NCHU NDHU NTHUNCTUASCC NCU NHLTC NTTU NIU NTU NCCU (2) 7609 NCNU (2) To TAIWANLight (2)

17 MPLS TC TP TN L MPLS15454 L MPLS L2 MPLS L2 HC NCKU NSYSU CCU NCHU NDHU NTHUNCTUASCC NCU NHLTC NTTU NIU NTU NCCU (2) 7609 NCNU (2) To TAIWANLight (2) Traffic Via Lightpaths with Protection

18 MPLS TC TP TN L MPLS15454 L MPLS L2 MPLS L2 HC NCKU NSYSU CCU NCHU NDHU NTHUNCTUASCC NCU NHLTC NTTU NIU NTU NCCU (2) 7609 NCNU (2) To TAIWANLight (2) End-to-End Lightpath Service

19 Conclusions  In this new architecture, IP and Optical network are integrated into one.  With MPLS+L2 switches in core layer, multi-point VLAN service is achieved.  MPLS LSPs are configured with fast- reroute option for link protection.  For lightpaths among GigaPOP and core node, the automatic protection are configured.  When a core node fails, manual re-route of lightpath can be done.  Reduce circuit cost by half.

20 Acknowledgements  C S Yang, S K Shieh, Z H Tsai, L M Tseng, L D Chou, H C Chao  Joe Mambretti, Bill St. Arnaud, John Silvester, David Richardson  Cisco Proof-of-Concept Lab, David Chen, Kevin Kuo, Falcon Young, Charles Smith  Juniper Taiwan, Eric Lin  2 circuit providers: Chunghwa Telecom + Asia Pacific Broadband Telecom

21 Thank you ! Comments and Suggestions?