1. EGEE-III Enabling Grids for E-sciencE www.eu-egee.org EGEE and gLite are registered trademarks 2008 report on LHCOPN from ASPDrawer https://edms.cern.ch/document/982588/ https://edms.cern.ch/document/982588/ LHCOPN meeting, Berlin, 2009-01-16 Guillaume Cessieux (CNRS FR-CCIN2P3 & EGEE networking support)

2. Enabling Grids for E-sciencE GCX Disclaimer Tool used has some bias that should be kept in mind while analysing data in these slides LHCOPN meeting - Berlin - 2009-01-16 2

3. Enabling Grids for E-sciencE GCX What is ASPDrawer ? ASPDrawer is monitoring BGP routes within LHCOPN –Home made tool tailored for the LHCOPN by EGEE-SA2  Mature tool: No key changes since 2006’s release –https://ccenoc.in2p3.fr/ASPDrawer/https://ccenoc.in2p3.fr/ASPDrawer/ It gathers BGP routing tables with SNMP access –On LHCOPN’s routers every 10 minutes –Then presences of LHCOPN’s IP prefixes are checked Provides a service view (L3) –Focus on paths rather than links 3 LHCOPN meeting - Berlin - 2009-01-16

4. Enabling Grids for E-sciencE GCX Excerpt 4 LHCOPN meeting - Berlin - 2009-01-16

5. Enabling Grids for E-sciencE GCX Known limitations & scope Like a 10 minutes snapshot –Some flaps might be unseen (might also depend on BGP timers) Scheduled downtimes are not managed Backup through GÉANT2/NRENs standard IP not considered Computed for whole year 2008 –Backup test periods excluded  2008-04-09, 2008-04-24 and 2008-06-03  Behaviour of tool was checked and validated Only data into CH-CERN’s routers were used –T0 → T1s vision in this report –FR-CCIN2P3 considered in trouble when CH-CERN not reached 5 LHCOPN meeting - Berlin - 2009-01-16

6. Enabling Grids for E-sciencE GCX 6 Number of troubles reported Yes, really! LHCOPN meeting - Berlin - 2009-01-16 113 troubles for 2008

7. Enabling Grids for E-sciencE GCX Trouble dispatching per duration LHCOPN meeting - Berlin - 2009-01-16 7

8. Enabling Grids for E-sciencE GCX 76 troubles ≤ 1h LHCOPN meeting - Berlin - 2009-01-16 8 Duration in minutes

9. Enabling Grids for E-sciencE GCX 37 troubles > 1h LHCOPN meeting - Berlin - 2009-01-16 9 Duration in hours

10. Enabling Grids for E-sciencE GCX Trouble dispatching per duration 10 LHCOPN meeting - Berlin - 2009-01-16

11. Enabling Grids for E-sciencE GCX Troubles number dispatched per month 11 CERN-IN2P3-LHCOPN-001 migrated to RENATER 5 ES-PIC yearly electrical maintenance LHCOPN meeting - Berlin - 2009-01-16

12. Enabling Grids for E-sciencE GCX Maximum outage duration in hours 12 2008-03-27 15:16:41 – Scheduled downtime 2008-01-24 20:52:59 ? 2008-07-25 13:47:25 – faulty card in GÉANT2 2008-04-30 16:07:03 – Scheduled downtime 2008-11-03 15:07:59 – failure of optical device between LYON and GENEVA LHCOPN meeting - Berlin - 2009-01-16

13. Enabling Grids for E-sciencE GCX Annual sum of troubles duration in hours 13 LHCOPN meeting - Berlin - 2009-01-16 Longest outage WLCG MoU 50,13

14. Enabling Grids for E-sciencE GCX Conclusion Scheduled downtimes (inc. Backup test periods) to be managed –Key thing to have meaningful statistics –Centralisation and formalisation of troubles’ registration within GGUS should help Current tool not considering standard IP backups –ES-PIC got one since early 2008... –Many things pending on tool’s development list →Should be completed soon by a DownCollector flavour –https://ccenoc.in2p3.fr/DownCollector/https://ccenoc.in2p3.fr/DownCollector/ →MDM? E2EMON? →Could leverage a deeper analyse giving outages’ localisation 14 LHCOPN meeting - Berlin - 2009-01-16

15. Enabling Grids for E-sciencE GCX Questions? LHCOPN meeting - Berlin - 2009-01-16 15