· Noncompliant operating environment might cause router failure. You need to clean your router periodically and make sure the installation environment meets the requirements (see "Preparing for installation").

· Periodically perform power-on test on standby devices.

Troubleshooting methods

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

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

· The MPU provides LEDs for the fans, power supplies, and modules. You can locate the failures according to the LED status on the MPU. For more information about the MPU LEDs, see H3C CR19000-16 Core Router Hardware Information and Specifications.

· The MPUs and interface modules provide port status LEDs, with which you can detect port failures. For more information about the port status LEDs, see H3C CR19000-16 Core Router Hardware Information and Specifications.

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."

Configuration terminal display issues

No display on the configuration terminal

Symptom

The configuration terminal does not have display when the router 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 correctly.

4. Verify that the console cable connects to the correct serial port on the terminal.

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

6. 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.

7. If the issue persists, contract H3C support.

Garbled display on the configuration terminal

Symptom

The configuration terminal displays garbled text when the router 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 router 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 settings or restore the factory-default settings.

For more information, see H3C CR19000 Core Routers Fundamentals Configuration Guide.

3. If the issue persists, contact H3C Support.

Power supply failure

Symptom

The LEDs for the power supply are in the following states:

· On the MPU, the PWR OK LED is off and the PWR FAIL LED is on.

The PWR OK LED is on and the PWR FAIL LED is off only when all the power supplies are operating correctly. When a power supply is faulty, the OK LED is off and the FAIL LED is on.

· On the power supply, the INPUT OK LED is off, or the OUTPUT OK LED is amber or red.

For more information about the LEDs, see H3C CR19000-16 Core Router Hardware Information and Specifications.

NOTE:

After a power supply is removed from the router, the input and output LEDs on the power supply stay on for several seconds.

Solution

To resolve the issue:

1. Verify that the power supply model is compatible with the router.

The PSR2400-54A and PSR2400-54D power supplies are available for the router.

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 supply to verify that it is installed securely.

For more information, see "Installing power supplies."

5. Verify that the power supply system is supplying power correctly and the output voltage is at the acceptable voltage range.

6. Verify that the installed power supplies can meet the system power requirements.

7. Verify that the power supply does not have issues such as output short circuit, output overcurrent, output overvoltage, input undervoltage, or overtemperature. You can determine the power supply status by observing the LEDs on the power supply. For information about the power supply LEDs, see H3C CR19000-16 Core Router Hardware Information and Specifications.

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

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

10. If the issue persists, contact H3C Support.

Fan tray failure

CAUTION:

· The router provides two fan tray slots. To ensure good ventilation, make sure two fan trays are present in the fan tray slots. When a fan tray fails, please keep the old fan tray installed in the chassis until a new fan tray is ready to be installed.

· Before hot swapping a fan tray, make sure the other fan tray is operating correctly. To ensure good ventilation, install a new fan tray within three minutes after removing the old one.

· Do not remove the fan trays at the same time.

Symptom

The LEDs for the fan tray are in the following states:

· On the MPU, the FAN OK LED is off and the FAN FAIL LED is on.

· On the fan tray, the FAN OK LED is off and the FAN FAIL LED is on.

Solution

To resolve the issue:

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

2. Execute the display fan command in any view to display the operating state of the fan tray and rectify the fault. The command output displays the following information:

¡ 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 outlet 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 slots and power supply 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 RUN LED for the MPU is off.

Solution

To resolve the issue:

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

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

3. Press the RESET button on the MPU to reset the MPU. After the MPU is reset, verify that the RUN LED is on.

4. If the router 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:

The MPU and interface module slot numbers are marked on the ejector lever pillow blocks at the slot edges. The fabric module slot number is marked above the slot.

Interface module failure

Symptom

The RUN LED on the interface module is off or steady red.

Solution

To resolve the issue:

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

2. Verify that the interface module is compatible with the system software. Upgrade the system software if it it does not support the interface module.

3. Calculate the total power consumption, and make sure your power supplies can provide enough power. For more information, see H3C CR19000-16 Core Router Hardware Information and Specifications.

4. Remove and reinstall the interface module to make sure it is installed securely. For more information about installing an interface module, see "Installing interface modules."

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

6. If the issue persists, contact H3C Support.

Fabric module failure

Symptom

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

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

On the fan tray, the RUN and ALM LED pairs correspond to the fabric module slots from left to right.

· On the fabric module, the RUN/ALM LED is red.

Solution

To resolve the issue:

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

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

3. Calculate the total power consumption, and make sure your power supplies can provide enough power. For more information, see H3C CR19000-16 Core Router Hardware Information and Specifications.

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 fabric modules."

5. If the router 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 the 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 interface module where the interface resides operates correctly. For more information, see "MPU failure" or "Interface module failure."

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

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. If the LEDs are off, the cable is faulty. Replace the cable.

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

a. Make sure the transceiver module is compatible with the interface and the cable.

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, you can connect the cable to an idle interface of the same type (if any) on the router.

Technical support

Before contacting H3C Support, prepare the following information:

· Arrival time of the router.

· 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.

You can contact H3C Support through the phone, H3C website, or email.

Phone: 400-810-0504

Website: http://www.h3c.com

E-mail: [email protected]

H3C CR19000-16 Core Router Installation Guide-6W102

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