· Noncompliant operating environment might cause device failure. You need to clean your device periodically and make sure the installation environment meets the requirements. For more information, see "Preparing for installation."

· Periodically perform power-on test on spare devices.

Troubleshooting methods

When your device fails, you can use the following methods to troubleshoot the device:

· At the CLI, you can use related commands to display hardware information, and locate hardware failures.

· Every MPU provides LEDs for the fans, power modules, and cards. You can locate the failures according to the LED status on the MPU. For more information about the LED status on the MPU, see H3C S12500R Switch Router Series Hardware Reference.

· The MPUs and service modules provide port status LEDs, with which you can detect port failures. For more information about port status LEDs, see H3C S12500R Switch Router Series Hardware Reference.

If you cannot locate failures by following the guidelines in this chapter, contact the local agents or technical support engineers. For more information, see "Technical support."

System failures at startup

No display on the configuration terminal

Symptom

The configuration terminal does not have display when the device is powered on.

Solution

To resolve the issue:

1. Verify that the power system is operating correctly.

2. Verify that the MPU is operating correctly.

3. Verify that the console cable connects the console port on the MPU and the serial port on the terminal correctly.

4. Verify that the console cable is in good quality and is operating correctly.

5. Verify that the following settings are configured for the terminal:

¡ Baud rate—9600.

¡ Data bits—8.

¡ Parity—None.

¡ Stop bits—1.

¡ Flow control—None.

¡ Emulation—VT100.

6. If the issue persists, contract H3C support.

Garbled display on the configuration terminal

Symptom

The configuration terminal displays garbled text when the device is powered on.

Solution

To resolve the issue:

1. Verify that the following settings are configured for the terminal:

¡ Baud rate—9600.

¡ Data bits—8.

¡ Parity—None.

¡ Stop bits—1.

¡ Flow control—None.

¡ Emulation—VT100.

2. If the issue persists, contact H3C Support.

System failures during operation

Symptom

A system failure occurs when the device is operating.

Solution

To resolve the issue:

1. Execute related commands to locate the fault.

2. If a configuration error is found, re-configure the device or restore the factory-default settings.

For more information, see H3C S12500R Switch Router Series Fundamentals Configuration Guide.

3. If the issue persists, contact H3C Support.

Power module failure

Symptom

The power module status LED on the MPU is steady red. The input LED on a power module is off or the output LED is red.

NOTE:

· The power module status LED on the MPU is steady green only when all the power modules are operating correctly. When a power module is faulty, the power module status LED is steady red.

· After a power module is disconnected from its power source, the input and output LEDs on the power module stay on for several seconds.

Solution

To resolve the issue:

1. Verify that the power module model is compatible with the device.

The PSR2400-54A, PSR3000-54A, PSR2400-54D, and PSR3000-54AHD power modules are compatible with the S12516R, S12508R, and S12504R.

2. Remove and reconnect the power cord to verify that the power cord is connected securely.

3. Replace the power cord.

4. Remove and reinstall the power module to verify that it is installed securely.

For more information, see "Installing FRUs."

5. Verify that the power source is supplying power at the acceptable voltage range.

6. Verify that the total maximum output power of all power modules exceeds the system power consumption.

7. Verify that the power module does not have issues such as output short-circuit, output over-current, output over-voltage, input under-voltage, or over-temperature.

8. Install the power module in another empty power module slot. If the power module operates correctly, the previous power module slot is faulty. If the power module does not operate correctly, go to the next step.

9. Install a correctly operating power module of the same model in the same slot, and connect it to the same power source. If the new power module can operate correctly, the old power module has failed. Contact your sales agent or local service engineer to replace the old power module.

10. If the issue persists, contact H3C Support.

Fan tray failure

Symptom

The fan tray status LED on the MPU is steady red. The OK LED on a fan tray is off and the FAIL LED is on.

Solution

To resolve the issue:

1. If all the LEDs are off, verify that the power modules are operating correctly. For more information, see "Power module failure."

2. Execute the display fan command in any view to display the operating state of the fan tray and rectify the fault:

¡ Whether the fan tray is present.

¡ Airflow direction of the fan.

¡ Number of fans in the fan tray.

¡ Operating status of each fan.

¡ Fan speed.

3. Verify that the air inlet and exhaust vents of the chassis are not blocked. If they are blocked, clean them to keep good ventilation.

4. Remove and reinstall the fan tray to make sure it is installed securely in the slot.

5. Verify that the empty service module slots and power module slots are installed with filler panels. Install filler panels in empty slots.

6. Replace the fan tray.

7. If the issue persists, contact H3C Support.

MPU failure

Symptom

The slot status LED for the MPU is steady red or flashing red.

Solution

To resolve the issue:

1. Verify that the power system is operating correctly. For more information, see "Power module failure."

2. Remove and reinstall the MPU to make sure it is installed securely. For more information, see "Installing FRUs."

3. Press the RESET button on the MPU to reset the MPU. After the MPU is reset, verify that the slot status LED for the MPU is flashing green.

4. If the device has empty MPU slots, install the MPU in the empty MPU slot, and verify that the MPU can operate correctly.

5. If the issue persists, contact H3C Support.

NOTE:

· On the S12516R and S12508R, the MPU and service module slot numbers are marked on the ejector lever pillow blocks at the left and right sides of the slots. The fabric module slot number is marked above the slot.

· On the S12504R, the MPU slot number is marked at the left side of the slot. The service module slot number is marked on the ejector lever pillow blocks at the left and right sides of the slot. You can see the fabric module slot numbers through the openings in the fan trays, as shown by callout 3 and callout 6 in the Figure 5-1.

Service module failure

Symptom

On the MPU, the slot status LED for a service module is steady red or flashing red.

Solution

To resolve the issue:

1. Verify that the MPU is operating correctly. For more information, see "MPU failure."

2. Verify that the system software is compatible with the service module. Upgrade the system software if it is not compatible with the service module.

3. Calculate the total power consumption, and make sure your power modules can provide enough power. For more information, see H3C S12500R Switch Router Series Hardware Reference.

4. Remove and reinstall the service module to make sure it is installed securely. For more information about installing a service module, see "Installing FRUs."

5. If the device has empty service module slots, install the card in an empty service module slot. If the service module operates correctly, the previous slot is faulty.

6. If the issue persists, contact H3C Support.

Fabric module failure

Symptom

The LEDs for a fabric module are in the following states:

· On the MPU, the slot status LED for the fabric module is steady red or flashing red.

· On the fan tray, the RUN LED for the fabric module is off.

¡ On the S12516R and S12508R fan trays, the RUN and ALM LED pairs correspond to the fabric module slots from left to right.

¡ On the S12504R fan tray, the extended lines of the RUN and ALM LED pairs correspond to the fabric module slots from left to right.

Figure 5-1 Corresponding relations between the LEDs on the S12504R fan trays and fabric module slots

(1) LEDs for the fabric module slot 6	(2) LEDs for the fabric module slot 8
(3) Fabric module slot number	(4) LEDs for the fabric module slot 9
(5) LEDs for the fabric module slot 11	(6) Fabric module slot number

· On the fabric module, the LED is red.

Solution

To resolve the issue:

1. Verify that the MPU and the fan tray are operating correctly. For more information, see "MPU failure" and "Fan tray failure."

2. Verify that the system software is compatible with the fabric module. Upgrade the system software if it is not compatible with the fabric module.

3. Calculate the total power consumption, and make sure your power modules can provide enough power. For more information, see H3C S12500R Switch Router Series Hardware Reference.

4. Remove and reinstall the fabric module to make sure the module is installed securely. You also need to verify that the ejector levers are locked securely in place. For more information, see "Installing FRUs."

5. If the device has empty fabric module slots, install the module in an empty fabric module slot. If the module operates correctly, the previous slot is faulty.

6. If the issue persists, contract H3C Support.

Interface failure

Symptom

The LED for an interface is off.

NOTE:

A management Ethernet port has two LEDs, LINK and ACT. When the LINK LED is off, the management Ethernet port fails.

Solution

To resolve the issue:

1. Make sure the MPU or service module where the interface resides operates correctly. For more information, see "MPU failure" or "Service module failure."

2. Verify that the cable is connected correctly. For how to correctly connect a cable, see "Connecting your device to the network."

3. Verify that the cable is in good condition. Use the cable to connect two interfaces of the same type that operate correctly. If the LEDs of the two interfaces are on, the cable is in good condition. Otherwise, the cable is faulty. Use a compliant cable to connect the interface. For more information, see H3C S12500R Switch Router Series Hardware Reference.

4. If the interface uses a transceiver module, perform the following tasks:

a. Make sure the interface type is compatible with the transceiver and that the transceiver is compatible with the cable. For more information, see H3C S12500R Switch Router Series Hardware Reference.

b. Replace the transceiver module.

5. Verify that the speed and duplex settings of the interfaces on the two ends are the same.

6. If the issue persists, contact H3C Support.

NOTE:

· If an interface is brought down by the shutdown command, use the undo shutdown command to bring up the interface.

· After an interface fails, if the device has an idle interface of the same type, you can connect the cable to the idle interface.

Technical support

Before contacting H3C Support, prepare the following information:

· Arrival time of the device.

· Serial number of the chassis (on the label at the right of the rear panel).

· Software version, which you can view by using the display version command.

· Maintenance agreement or warranty card.

· Brief issue description.

· Brief explanation of the troubleshooting measures that have been taken.

H3C S12500R Switch Router Series Installation Guide-6W102

System failures at startup

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