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LHCOPN lambda and fibre routing

LHCOPN lambda and fibre routing. Otto Kreiter DANTE, 12.01.2007. LHCOPN LOGICAL MAP. TRIUMF. ASC. NDGF. RAL. SARA. USLHCNET NY. x3. GRIDKA. IN2P3. CERN. CNAF. PIC. GÉANT2 DF MAP + national DF + CBF. Cop. Ams. Lon. Ent/Mue. Fra. Par. Kar. Lyon. Gen. Mil. Mad. GN2 DF.

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LHCOPN lambda and fibre routing

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  1. LHCOPN lambda and fibre routing Otto Kreiter DANTE, 12.01.2007

  2. LHCOPN LOGICAL MAP TRIUMF ASC NDGF RAL SARA USLHCNET NY x3 GRIDKA IN2P3 CERN CNAF PIC

  3. GÉANT2 DF MAP + national DF + CBF Cop Ams Lon Ent/Mue Fra Par Kar Lyon Gen Mil Mad GN2 DF CBF National DF/Wave

  4. T0-T1 lambdas and T1-T1 NDGF Ams SARA Lon RAL Ent/Mue x4 Fra Par GRIDKA Gen IN2P3 CERN Mil CNAF Mad GN2 DF CBF National DF/ λ PIC GÉANT2 λ CBF λ National λ

  5. USLHCNT routing NY-MANLAN AC-2 AMS-SARA NY 111 8th Whitesands NY60 Hudson VSNL North VSNL GVA-CERN WAL Highbridge (UK) Frankfort VSNL South CHI-Starlight Pottington London Global Crossing Qwest Colt Atlantic Ocean GEANT https://indico.fnal.gov/contributionDisplay.py?contribId=3&confId=417

  6. Conclusion T0-T1 connections: • GRIDKA-CERN, NDGF-CERN, SARA-CERN (x4), USLHCNET-CERN (COLT) – share the same fiber between FRA-GEN and the POP in FRA • GRIDKA-CERN, NDGF-CERN, SARA-CERN(x4), USLHCNET-CERN (COLT), CNAF-CERN – share the same trench/duct/hut between Basel and Geneva • PIC-CERN, RAL-CERN share the same trench/duct between Lyon and Geneva

  7. Conclusion – cont. T1/T0-T1 connection interaction: • CNAF-GRIDKA is suspected to share the same trench with CNAF-CERN between Zurich-Basel, and some common points between Zurich-Milan and most probably the German part of the FRA-GEN fibre • IN2P3-GRIDKA share the CBF and is suspected to share parts of the German part of the FRA-GEN GN2 fibre • SARA – GRIDKA is suspected to share the same duct/trench between FRA-KAR with the FRA-GEN GN2 DF, however the connection between FRA-KAR is protected inside DFN

  8. Conclusion – contd. • If a fibre break occurs somewhere between Karlsruhe and Basel it is highly possible that SARA/ GRIDKA/ NDGF will be cut off from the LHCOPN • If a fibre break occurs somewhere between Basel and Geneva CNAF and SARA will be connected to GRIDKA who will rely on a T1-T1 connection to IN2P3 for backup – hence won’t be able to route the traffic from CNAF/SARA according to the current routing plan ?!

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