CERN IT Department

CH-1211 Genève 23

Switzerlandwww.cern.ch/

it

HP ProCurve 2910 Ethernet switch in CNRAD

April-June 2012

RadWG Meeting

04.02.2014

Gyorgy Balazs

CERN IT Department

CH-1211 Genève 23

Switzerlandwww.cern.ch/

it

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

Switzerlandwww.cern.ch/

it

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

Switzerlandwww.cern.ch/

it

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

Switzerlandwww.cern.ch/

it

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

Switzerlandwww.cern.ch/

it

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

Switzerlandwww.cern.ch/

it

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

Switzerlandwww.cern.ch/

it

3 switches with redundant power supplies deployed at TSG46Spirent 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

Switzerlandwww.cern.ch/

it

Beam conditions

Run # DUT id Part typeFlux (1-MeV neutron

equivalent)(cm-2/POT

Flux (Hadron) (cm-2/POT)

Dose rate(GY/POT)

1 Switch

[1,2,3]

mixed 2.42 x 10-8 1.7 x 10-8 3.27 x 10-8

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 2910 24 portSwitches 2,4: HP ProCurve 2910 48 portSwitches 5,6: 3COM 4400 24 port modelRPS1: HP RPS620 external PSU 2 portsRPS2: HP RPS630 external PSU 1 port

CERN IT Department

CH-1211 Genève 23

Switzerlandwww.cern.ch/

it

Test results

Run # DUT id. Time Failures

observed

HEH Fluence [cm-2]

1MeV n equivalent [cm-

2]

Beam Intensity (pot)

Total dose [Gy(Si)]

1 Switch1,2,315/03/2012 14:21 to

20/03/2012 14:54PSU 8.92E7 1.25E8 4.95E15 0.016

1 Switch1,2,35/03/2012 14:21 to 21/03/2012 09:37

FATAL 8.96E7 1.25E8 5.04E15 0.0165

3 Switch4,5,626/04/2012 12:52 to

26/4/2012 13:50FATAL 9.11E7 1.29E8 5.065E15 0.0165

Ethernet switch in CNRAD 10/11

CERN IT Department

CH-1211 Genève 23

Switzerlandwww.cern.ch/

it

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