CERN IT Department CH-1211 Genève 23 Switzerland t HP ProCurve 2910 Ethernet switch in CNRAD April-June 2012 RadWG Meeting Gyorgy Balazs

CERN IT Department CH-1211 Genève 23 Switzerland t Evaluation process Project to replace the ~600 obsolete network switches (3COM 4400) on the Technical Network (TN) during LS1 HP ProCurve 2910 as main candidate 6 months of thorough testing to ensure performance and reliability. Including tests: Performance and feature tests Ethernet switch in CNRAD 2/11

CERN IT Department CH-1211 Genève 23 Switzerland t Evaluation process Project to replace the ~600 obsolete network switches (3COM 3300) on the Technical Network (TN) all around CERN during LS1 HP ProCurve 2910 as main candidate 6 months of thorough testing to ensure performance and reliability. Including tests : Performance and feature tests High temperature Ethernet switch in CNRAD 3/11

CERN IT Department CH-1211 Genève 23 Switzerland t Evaluation process Project to replace the ~600 obsolete network switches (3COM 3300) on the Technical Network (TN) all around CERN during LS1 HP ProCurve 2910 as main candidate 6 months of thorough testing to ensure performance and reliability. Including tests : Performance and feature tests High temperature Dust Ethernet switch in CNRAD 4/11

CERN IT Department CH-1211 Genève 23 Switzerland t Evaluation process Project to replace the ~600 obsolete network switches (3COM 3300) on the Technical Network (TN) all around CERN during LS1 HP ProCurve 2910 as main candidate 6 months of thorough testing to ensure performance and reliability. Including tests : Performance and feature tests High temperature Dust Magnetic field Ethernet switch in CNRAD 5/11

CERN IT Department CH-1211 Genève 23 Switzerland t Evaluation process Project to replace the ~600 obsolete network switches (3COM 3300) on the Technical Network (TN) all around CERN during LS1 HP ProCurve 2910 as main candidate 6 months of thorough testing to ensure performance and reliability. Including tests : Performance and feature tests High temperature Dust Magnetic field Power cycle Ethernet switch in CNRAD 6/11

CERN IT Department CH-1211 Genève 23 Switzerland t Evaluation process Project to replace the ~600 obsolete network switches (3COM 3300) on the Technical Network (TN) all around CERN during LS1 HP ProCurve 2910 as main candidate 6 months of thorough testing to ensure performance and reliability. Including tests : Performance and feature tests High temperature Dust Magnetic field Power cycle Radiation TSG 46 Ethernet switch in CNRAD 7/11

CERN IT Department CH-1211 Genève 23 Switzerland t 3 switches with redundant power supplies deployed at TSG46 Spirent STC traffic generator placed in CNGS control room Radiation test setup Goal to understand the limits, switch not deployed in radiated areas Ethernet switch in CNRAD 8/11

CERN IT Department CH-1211 Genève 23 Switzerland t Beam conditions Run #DUT idPart type Flux (1-MeV neutron equivalent) (cm-2/POT Flux (Hadron) (cm-2/POT) Dose rate (GY/POT) 11  Switch [1,2,3] mixed2.42 x x x 22  Switch [4,5,6] Run #1 irradiation from 15/03/2012 at 14:21- Switch[1,2,3] removed on 26/4/2012 Run #2 irradiation from 26/4/2012 at 12:52- Switch[4,5,6], RPS[1,2] removed on 27/6/2012 Ethernet switch in CNRAD 9/11 Switches 1,3: HP ProCurve port Switches 2,4: HP ProCurve port Switches 5,6: 3COM port model RPS1: HP RPS620 external PSU 2 ports RPS2: HP RPS630 external PSU 1 port

CERN IT Department CH-1211 Genève 23 Switzerland t Test results Run #DUT id.Time Failures observed HEH Fluence [cm-2] 1MeV n equivalent [cm- 2] Beam Intensity (pot) Total dose [Gy(Si)] 1Switch1,2,3 15/03/ :21 to 20/03/ :54 PSU8.92E71.25E84.95E Switch1,2,3 5/03/ :21 to 21/03/ :37 FATAL8.96E71.25E85.04E Switch4,5,6 26/04/ :52 to 26/4/ :50 FATAL9.11E71.29E85.065E Ethernet switch in CNRAD 10/11

CERN IT Department CH-1211 Genève 23 Switzerland t Conclusion Switches are very sensitive to radiation Power supplies (internal and external) are clearly the most sensitive parts Electrical circuit breakers activated on the wall sockets - probably single event latchups Comparison to the previously deployed model does not show a big difference As the previously serving switches, deployed in protected areas Today 90% deployment rate Ethernet switch in CNRAD 11/11