Customer Service Center

Try the following actions to try resolving or isolating the root cause of the problem:
 

1. Make sure the power connections meet with the chassis connection requirements specified on the Getting Started Guide (You can find this guide for each version under the download section) on which is specified that each power supply must be connected to a 15A circuit that is not shared with other equipment:

NOTE: If this requirement is not meet most likely the chassis will not function properly
 

2. Try a gracefully shutdown:
   1. FAQ17106 - Spirent TestCenter: How to gracefully shutdown Spirent TestCenter chassis?

3. Try rebooting the chassis by doing:
   1. First power down the chassis, turn off the DC power by withdrawing the black button on the front of the chassis.
   2. When the front is shut down, power down on the back of the chassis by turning off the switch and/or removing the power cords (AC power switch or cord).
   3. Reseat the Controller, Power Supplies, and Fan Tray.
      • You can refer to the following KB: 
        • FAQ19419 - Spirent TestCenter: How to reseat a chassis controller?
        • DOC10480 - SPT-N11U and SPT-N12U Chassis Power Supply Installation Instructions
        • DOC10483 -Spirent TestCenter: SPT-N11U/SPT-N12U Fan Tray Replacement Instructions
      • Note: N4U controllers are not removable.

4. Remove the line cards (test Modules) but do not reinsert the line cards into the slots.
5. Power up in reverse order: power up on the back first by turning on the switch and/or plugging in the power cords.
6. Next, turn on the DC power by inserting the black button on the front of the chassis.
7. Wait up to one hour, if required, for power up to be completed.
8. Verify green lights and connectivity to the chassis.
9. When powered up successfully, re-insert the first line card.
10. Continue inserting one card at a time, waiting for each to fully initialize before inserting the next.
11. It may be useful to observe the following information using the TestCenter Application after the chassis boots up and after each card boots up: GUI – Tools -> Equipment Information ->Diagnostic -> Equipment -> (Chassis IP) -> Temperature, Power Supply Status, and Fan Status
     

4. If N11U or N12U, and if there is other chassis available, swap the chassis's contoller with a known working one to see if the issue follows the controller or the chassis
   • Note: N4U controllers are not removable.

5. Swap the Hard Drive with a known working one. This can be performed either on N4U, N11U or N12U chassis.

6. You may want to try doing an upgrade to either the latest release, or even to the same exact version (for example, upgrade from 5.20 release to 5.26, or upgrade from 5.26 to the same 5.26 release)

7.  SOL14010 - Spirent TestCenter: How to upgrade a Spirent TestCenter Chassis?
   
    
8. SOL12233 - Spirent TestCenter: How do I upgrade a chassis if I can't access it via the GUI?

9.  Try chassis reimage:
   1. FAQ19322 - Spirent TestCenter: Reimage home page

If you're signed in to the CSC, you can access the Spirent TestCenter Hardware Reference for further details.