Contents

Troubleshooting· 1

Troubleshooting methods· 1

Configuration terminal problems· 1

No terminal display· 1

Garbled terminal display· 1

Troubleshooting the router during the operation· 2

Power supply system failure· 2

Fan failure· 2

MPU failure· 3

Service module and switching fabric module failure· 3

Interface failure· 4

Technical support 4

 

Troubleshooting

This chapter describes how to troubleshoot your router.

 

	TIP: Noncompliant operating environments might cause router failures. To ensure correct operation of the router, regularly clean the router and check the ambient operating environment against the requirements in "Preparing for installation." For the spare routers in storage, regularly perform power-on tests.

 

Troubleshooting methods

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

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

·     The MPU provides the 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 H3C CR16000-F Router Series Hardware Information and Specifications.

·     The MPU or service module of the router provides the port status LEDs, with which you can detect port failures. For more information about the LED status on the service module, see H3C CR16000-F Router Series 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 problems

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

No terminal display

If the configuration terminal displays nothing when the router is powered on, verify the following items:

·     The power supply system is operating correctly.

·     The MPU is operating correctly.

·     The console cable has been connected to the console port of the MPU.

If no problem is found, examine the console cable for the following problems:

·     The console cable is connected to an incorrect serial interface. (The serial interface in use is not the one set on the terminal.) To solve this problem, select the correct serial interface.

·     The console cable is broken. To solve this problem, replace the console cable.

Garbled terminal display

If terminal display is garbled, verify that the following settings are configured for the terminal, for example, HyperTerminal:

·     Baud rate: 9600

·     Data bits: 8

·     Parity: none

·     Stop bits: 1

·     Flow control: none

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

Troubleshooting the router during the operation

Use display commands to examine the configuration for configuration errors or examine statistics for exceptions.

If any configuration error is found, re-configure the router or restore the factory-default settings.

Power supply system failure

If the router is operating correctly, the LEDs on the power supply (AC LED and DC LED) are green. For more information, see H3C CR16000-F Router Series Hardware Information and Specifications.

After a power supply is disconnected from its power source, it is normal that the power LEDs stay ON for several seconds.

If the power LEDs are off or not green, examine the power supply for an exception, as follows:

1.     If the DC 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 has been covered by a filler panel.

2.     If the DC 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 DC 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, connect the power cord again. 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 make sure it has a close contact with the backplane of the router.

5.     Examine the power supply system. Make sure the power supply system operates correctly and provides a normal voltage.

6.     If the router has empty power supply slots, remove the power supply, install the power supply in 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 in 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.

Fan failure

Both the MPU and the fan tray provide the fan tray LEDs, including an OK LED and a FAIL LED. When the fan tray operates correctly, the OK LED is on, and the FAIL LED is off.

If the OK LED is off or the FAIL LED is on, the fan tray has failed. To troubleshoot the fan tray:

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

2.     Verify that the air intakes and exhaust 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, install it again, and then insert and fasten the screws.

4.     Verify that the empty service 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 failure persists, contact the local agents or technical support engineers.

MPU failure

The status LEDs on the MPU show the status of a card in the corresponding slot. According to the slot number of an MPU, you can verify the corresponding LEDs for the MPU.

When the MPU operates correctly, the RUN LED flashes and the ALM LED is off. When the RUN LED is off, the MPU fails. To troubleshoot the MPU:

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

2.     Verify that the MPU is fully seated. You can remove the MPU, 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 whether the corresponding RUN LED is on.

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

5.     If the failure persists, contact the local agents or technical support engineers.

Service module and switching fabric module failure

Use the card status LEDs on the MPU to identify the failure of the service module or switching fabric module in a particular slot.

If a card is operating correctly, the RUN LED flashes and the ALM LED is off. When the RUN LED is off, the card fails. To troubleshoot the card:

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 H3C CR16000-F Router Series Hardware Information and Specifications.

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 router has empty card slots, install the card in an empty card slot, and verify that the card can operate correctly.

6.     If the failure persists, contact the local agents or technical support engineers.

Interface failure

The interfaces provided by MPUs and service modules all have corresponding LEDs. When an interface connected to the network operates correctly, the corresponding LED is on.

 

	NOTE: 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.

 

If the LED of an interface connected to the network is off, the interface or the connecting cable might fail. To troubleshoot the interface:

1.     Make sure the MPU or service module where the interface resides operates correctly. For more information, see "MPU failure" or "Service module and 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 H3C CR16000-F Router Series Hardware Information and Specifications.

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 normal. Otherwise, the cable fails. Use a compliant cable to connect the interface. For more information about the compliant cables, see H3C CR16000-F Router Series Hardware Information and Specifications.

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

5.     If the interface is a combo interface (which contains a fiber and a copper port), make sure the port used for connection is activated for the combo interface. Then, use the combo enable { copper | fiber } command to activate the port, and verify the LED.

 

NOTE: ·     A combo interface is a logical interface that contains one fiber port (Gigabit/100-Mbps SFP port) and one copper port (10/100/1000BASE-T GE port). The two ports share one interface view and cannot work simultaneously. When you use the combo enable { copper | fiber } command to enable one port, the other port is disabled automatically. ·     If a port 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 the idle interface if the router has an idle interface of the same type.

 

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

7.     If the failure persists, contact the local agents or technical support engineers.

Technical support

If the failures still exist, contact the agents or technical support engineers. Before contacting the customer service, prepare the following information to help the agents solve the problem as quickly as possible:

·     Arrival time of the router

·     Serial number of the chassis (located on a label on the right of the rear panel)

·     Software version (Which you can view by using the display version command.)

·     Maintenance agreement or warranty card

·     Brief problem description

·     Brief explanation of the troubleshooting measures that have been taken

You can contact the customer service through the H3C website, or email.

Website: http://www.h3c.com/en/

E-mail: service@h3c.com