Contents

Troubleshooting· 1

Troubleshooting methods· 1

Configuration terminal issues· 1

No terminal display· 1

Garbled terminal display· 2

Power supply failure· 2

Fan failure· 3

MPU failure· 3

Interface module, service module, or switching fabric module failure· 4

Interface failure· 4

 

Troubleshooting

This chapter describes how to troubleshoot your gateway.

 

	TIP: Clean your gateway periodically because the noncompliant operating environments may cause gateway failures. At the same time, verify the installation environments against the requirements in "Preparing for installation." Make sure the gateway operates in a compliant environment. Additionally, periodically perform the power-on test for the spare gateways.

 

Troubleshooting methods

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

·     At the CLI, you can use the related commands to display hardware information, locate hardware failures, and examine statistics for exceptions. If any configuration error is found, re-configure the gateway or restore the factory-default settings.

·     The MPU provides LEDs for the fans 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 "Appendix C  LEDs."

·     The MPUs, interface modules, and service modules of the gateway provide the port status LEDs, with which you can detect port failures. For more information about the LED status on the MPUs, interface modules, and service modules, see "Appendix C  LEDs."

If you cannot locate failures by following the guidelines in this chapter, contact H3C Support.

Configuration terminal issues

If the configuration environment setup is correct, the configuration terminal displays boot information when the gateway is powered on. If the setup is incorrect, the configuration terminal displays garbled text or does not display anything.

No terminal display

Symptom

The configuration terminal displays nothing when the gateway is powered on.

Solution

To resolve the issue:

1.     Verify that the power supply system is operating correctly.

2.     Verify that the MPU is operating correctly.

3.     Verify that the console cable has been connected to the console port of the MPU.

4.     Verify that the console cable has been connected to the correct serial interface on the terminal and the serial interface in use is the one set on the terminal.

5.     Verify that the console cable is in good condition and operates correctly.

6.     If the issue persists, contact H3C Support.

Garbled terminal display

Symptom

Terminal display is garbled.

Solution

To resolve the issue:

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

¡     Baud rate—9,600.

¡     Data bits—8.

¡     Parity—None.

¡     Stop bits—1.

¡     Flow control—None.

When you modify the settings for the console port of the gateway, configure the same settings for the console terminal.

2.     If the issue persists, contact H3C Support.

Power supply failure

The power input and output status LEDs on a power supply are steady green when the power supply is operating correctly.

Symptom

The power input and output status LEDs on a power supply are off or not green.

Solution

To resolve the issue:

1.     If the power output status LED is orange, the power supply has transitioned to the over-temperature protection state. Examine the cooling system for inadequate ventilation, and make sure every empty slot is covered by a blank filler panel.

2.     If the power output status LED is red, the power supply has transitioned to a self-protection state because of a power supplying problem. Examine the power supply for output short circuit, output over-current, output over-voltage, input under-voltage, or remote disconnection.

The power output status LED also turns red if the input of the power supply is disconnected while the other power supply is operating correctly. In this case, connect the input or keep the input disconnected as needed.

3.     Examine the power cord connections. If a power cord is loose, re-install the power cord. If a power cord is broken, replace it.

4.     Examine the power supply installation. If the power supply is not fully seated, re-install the power supply to ensure that it has a close contact with the backplane of the gateway.

5.     Verify that the power supply system operates correctly and provides a normal voltage.

6.     If the gateway has empty power supply slots, remove the power supply, install the power supply into an empty power supply slot after all LEDs on the power supply are off, and verify that the power supply can operate correctly.

7.     Install a new power supply of the same model into the same slot, and connect it to the same power input end. If the new power supply can operate correctly, the old power supply has failed. You must replace the old power supply.

8.     If the issue persists, contact H3C Support.

 

NOTE: The power status LEDs on a power supply will not turn off immediately after power is disconnected from the power supply.

 

Fan failure

Symptom

The OK LED is off or the FAIL LED is on.

Solution

To resolve the issue:

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

2.     Verify that the air inlet and outlet vents of the chassis are not blocked. If they are blocked, clean them to keep good ventilation. If you install air filters, remove the air filters, clean them, and install them again.

3.     Verify that the fan tray is fully seated. You can remove the fan tray and then install it again.

4.     Verify that the empty interface module slots and power supply slots are installed with filler panels. If not, install filler panels for them to guarantee good ventilation.

5.     If the issue persists, contact H3C Support.

MPU failure

When an MPU is operating correctly, its run LED flashes and its ALM LED is off.

Symptom

The RUN and ALM LEDs on an MPU are steady on.

 

CAUTION: The RUN and ALM LEDs on an MPU are also steady on during the startup process of the MPU. That is normal and does not mean occurrence of a fault.

 

Solution

To resolve the issue:

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

2.     Verify that the MPU is fully seated. You can remove the MPU and then install it again, and make sure the MPU is fully seated.

3.     Press the RESET button of the MPU to reset the MPU. After the MPU is reset, verify that the status of the LEDs are normal.

4.     If the gateway has empty MPU slots, install the MPU into an empty MPU slot, and verify that the MPU can operate correctly.

5.     If the issue persists, contact H3C Support.

Interface module, service module, or switching fabric module failure

When an interface module, service module, or switching fabric module is operating correctly, its RUN LED flashes and its ALM LED is off.

Symptom

The RUN and ALM LEDs on an interface module, service module, or switching fabric module are steady on.

 

CAUTION: The RUN and ALM LEDs on an interface module, service module, or switching fabric module are steady on during the startup process of the module. That is normal and does not mean occurrence of a fault.

 

Solution

To resolve the issue:

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

2.     Verify that the software version is compatible with the card. If not, upgrade the software to a compatible version.

3.     Calculate the total power consumption, and make sure your power supplies can provide enough power. For more information, see "Appendix A  FRUs and compatibility matrixes."

4.     Verify that the card is fully seated. You can remove the card, install it again, and press the ejector levers inward until the ejector levers touch the panel tightly.

5.     If the gateway has empty card slots, plug the card into an empty card slot, and verify that the card can operate correctly.

6.     If the issue persists, contact H3C Support.

Interface failure

Symptom

The LED of an interface connected to the network is off.

Solution

To resolve the issue:

1.     Verify that the MPU, interface module, or service module where the interface resides operates correctly. For more information, see "MPU failure" or "Interface module, service module, or switching fabric module failure."

2.     Examine the cable connection of the interface. For how to correctly connect the cable to an Ethernet interface with an RJ-45 connector or an optical interface, see "Connecting network 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 they are not on, the cable has failed. Use a compliant cable to connect the interface. For more information about the compliant cables, see "Appendix E  Cables."

4.     If the interface uses a transceiver module, make sure the interface type is compatible with the transceiver and that the transceiver is compatible with the cable. For more information, see "Appendix A  FRUs and compatibility matrixes."

5.     If the interface uses a transceiver, make sure the current transceiver operates correctly by replacing a normal transceiver.

6.     If the interface is a combo interface, make sure the port used for connection is activated. If the port is not activated, use the combo enable { copper | fiber } command to activate the port, and verify the LED.

A combo interface is a logical interface that contains one fiber port and one copper port. The two ports share one interface view and cannot work simultaneously. When you enable either port, the other port is automatically disabled. You can activate either port as needed. The default operating port is the copper port.

7.     Verify that the speed and duplex settings of the interfaces of a link are the same. Make sure that two interfaces can work together.

8.     If the issue persists, contact H3C Support.

 

NOTE: ·     If a port is brought down by the shutdown command, use the undo shutdown command to bring up the interface. ·     A management Ethernet interface or XFP interface each has two LEDs, LINK and ACT. The LED mentioned in this section for such an interface refers to the LINK LED. Each interface of any other type has only one LED. ·     When an interface fails, if the gateway has an idle interface of the same type, you can install the cable into the idle interface.