Light-path Monitor System of TWAREN Optical Network

1. Light-path Monitor System of TWAREN Optical Network National Center for High-Performance Computing Speaker: Ming-Chang Liang

2. introduction

3. TWAREN phase 2 • TWAREN was adapted for more protection methods and better availability at the end of 2006, called TWAREN phase 2. • Tens of optical switches and hundreds of lightpaths were then served as the foundation of the layer 2 VLAN services and the layer 3 IP routing services. • In 2008, tens of VPLS switches were further incorporated to provide additional Multi-point VPLS VPN service. • The layer 1 lightpaths can be protected by SNCP, layer 2 VLAN by spanning tree recalculation and layer 2 VPLS by fast reroute technology. • All these improvements transform TWAREN phase 2 into a true hybrid network capable of providing multiple layers of services and high availability .

4. Architecture of Optical Network

5. STM64 STM16 10GE GE Architecture of TWAREN phase 2 NCCU NIU ASCC NTU 6509 15454 6509 7609 7609 7609 NDHU 6509 15454 7609 15454 15454 3750 6509 15600 NCU 15454 12816 12816 15454 7609 NCNU MOEcc 7609C NHLTC Taipei 7609 12816 12816 6509 3750 6509 Taichung Hsinchu 7609C NCTU 15454 7609C 15454 15454 15600 7609 NCHC 12816 NCHC 12816 6509 Tainan NCHU 15454 NCHC 7609C 7609 NTTU 6509 12816 12816 15454 NTHU 15454 6509 3750 15600 7609 15454 15454 15454 7609 6509 7609 7609 6509 6509 NSYSU CCU NCKU

6. CTC is not enough for us • TWAREN phase 2 inherently has the ability to guard against a single point of hardware or circuit failure, so the failure is less likely to affect the actual service provisioning. • When port or circuit is fault, we must determine which lightpaths are affected and then correlate with services of upper layers.

7. Design of NMS

8. 1st Stage Architecture of NMS Control API GUI & Ticket System Monitor Objs Traps Fault Detection Data Collectors Fault Location MIBs Current Status DB Syslogs Threshold DB Net flows Long Term DB Telnet/SSH Case/Action DB Auto Action TL1 Threshold Analyzer Mirror Report System Interactive Passive

9. Lightpaths Monitor System Monitor System in NOC Alarm trigger Alarm Email Database Trap parser Light-path data Parser ONS TWAREN Optical Network

10. Frequent incident case 1

11. Frequent incident case 2

12. Important information in a trap

13. cerent454AlarmState

14. The OID of ONS Trap ONS-15600 ONS-15454

15. Design of Database

16. Relationship of Data Tables Basic Data Tables Relationship Tables Component Circuit People VLAN Services Location VPLS Services Unit ONS Light Path Vendor ONS Cross Connection …., etc …., etc

17. Basic Data Tables Component Data Table Vendor Data Table People Data Table Unit Data Table Location Data Table

18. Port Table

19. Topology Link Table

20. Cross Connection Table

21. Light-Path Table

22. Alarm Table

23. implementation

24. Working steps • Build Port table by reading from Component table. • Send some TL1 commands to all ONS. • Build TopologyLink and CrossConnection tables by parsing the responses of TL1. • Build LightPath table by aggregating Port, TopologyLink, CrossConnection tables. • Determine the affected ports When receive traps from ONS, and then correlate the affected services with database.

25. TL1 commands

26. Partial SNCP (1) ONS-B ONS-A RA ONS-C ONS-D RB Configured working path Configured protection path

27. Partial SNCP (2) ONS-B ONS-A RA ONS-C ONS-D RB Actual working path Configured protection path

29. Web-based alarm log system

30. Example 1

31. Example 1

32. Example 2

33. Integrated visual interface