Contents

Troubleshooting· 1

Troubleshooting methods· 1

Troubleshooting the system·· 1

Troubleshooting on startup· 1

Troubleshooting the router during the operation· 2

Troubleshooting the power supply system·· 2

Troubleshooting the fans· 3

Troubleshooting the MPUs· 3

Troubleshooting the service modules· 3

Troubleshooting interfaces· 4

Troubleshooting CF cards· 4

Technical support 5

 

Troubleshooting

This chapter describes how to troubleshoot your router.

 

	IMPORTANT: 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. For more information about the commands, see device management in H3C SR8800-X Routers Fundamentals Command Reference.

·     The MPUs provide the LEDs for the power supply system, fans, MPUs, service modules, CF cards, and ports. You can locate the failures according to the LED status on the MPU. For more information about the LED status on the MPUs, see "MPU LEDs."

·     The service modules provide the port status LEDs, with which you can detect port failures. For more information about the LED status on the service modules, see "Service module LEDs."

If you cannot locate failures by using the methods in this chapter, contact the local agents or H3C Support. For more information, see "Technical support."

Troubleshooting the system

Troubleshooting on startup

After you power on the router, if the router operates correctly, the startup information appears on the console terminal. If the console terminal displays nothing or garbled characters, use the following methods to troubleshoot the router.

No display on the terminal

If the console terminal displays nothing after you power on the router, 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, the following failure reasons might apply:

·     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 a correct serial interface.

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

Garbled characters on the terminal

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

·     Emulation: VT100

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

At the CLI, you can use related commands to display the router information and locate the failures. For more information about how to display the router information, see device management in H3C SR8800-X Routers Fundamentals Command Reference.

If you detect any configuration error, re-configure the router or restore the factory defaults for the router.

Troubleshooting the power supply system

If the router operates correctly, the status of the LEDs related to the power supply system is as follows:

·     The LED on the power supply is green. On a power supply with multiple LEDs, each LED indicates the status of a function. For more information, see "Power supply LEDs."

·     For the PWR LEDs on the MPU:

¡     If the MPU has only one PWR LED, the LED is green.

¡     If the MPU has two PWR LEDs, the OK LED is on, and the FAIL LED is off.

For more information about the PWR LEDs on an MPU and the LEDs on a power supply, see "Appendix C  LEDs."

 

	NOTE: After the power source is disconnected from the power supply, it is correct that the LEDs stay on for a period of time.

 

If the LEDs do not conform to the status mentioned above, the power supply is operating incorrectly.

To troubleshoot the power supply system:

1.     Verify that the power supply is switched on.

2.     Examine whether the power supply is over-temperature. When a power supply is over-temperature, it enters the self protection state. Make sure the router is correctly ventilated.

3.     Verify the power cord connections. If a power cord is loose, connect the power cord again. If a power cord is broken, replace it.

4.     Verify 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.     Verify the power supply system. Make sure the power supply system is operating correctly and provides a normal voltage.

6.     If the router has empty power supply slots, install the power supply in an empty power supply slot, 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 supply. If the new power supply can operate correctly, the old power supply is faulty. Contact the local agents for replacing the old power supply.

Troubleshooting the fans

If the fan tray is operating correctly, the status of the fan tray LEDs on the MPU is as follows:

·     For the MPU with only one fan tray LED, the LED is green.

·     For the MPU with two fan tray LEDs, the OK LED is on and the FAIL LED is off.

If the fan tray LEDs do not conform to the status mentioned above, the fan tray fails.

To troubleshoot the fan tray:

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

2.     Verify that the inlet and outlet air vents of the chassis are not blocked. If the air vents are blocked, clean them to keep the air flow smooth.

3.     If you install air filters on the inlet air vents, remove the air filters, clean them, and install them again.

4.     Verify that the fan tray is fully seated. You can remove the fan tray, install it again, and then fix the fan tray with screws.

5.     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.

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

Troubleshooting the MPUs

The status LEDs on the MPU show the status of a card in the associated slot. According to the slot number of an MPU, you can identify the associated LEDs for the MPU. For more information, see "MPU LEDs."

To troubleshoot the MPU:

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

2.     Verify that the MPU model is compatible with the chassis. For more information, see "MPUs."

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

4.     Verify that the MPU is fully seated. You can remove the MPU and install it in again to make sure the MPU is fully seated.

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

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

Troubleshooting the service modules

The status LEDs on the MPU show the status of a card in the associated slot. According to the slot number of a service module, you can identify the associated LEDs for the service module. For more information, see "Service module LEDs."

To troubleshoot the service module:

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

2.     Verify that no incompatible software version information is prompted on the console terminal. A service module is compatible with a specific software version. If not, upgrade the software to a compatible version.

3.     Calculate the total power consumption, and make sure your power supply can provide enough power. For more information, see "Power supplies."

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

5.     If the router has empty service module slots, install the service module in an empty service module slot, and verify that the service module is operating correctly.

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

Troubleshooting interfaces

The interfaces provided by MPUs and service modules all have associated LEDs. When an interface connected to the network is operating correctly, its 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.     Verify that the MPU or service module where the interface resides is operating correctly. For more information, see "Troubleshooting the MPUs" or "Troubleshooting the service modules."

2.     Verify the cable connection of the interface. For how to correctly connect the cable to a copper port with an RJ-45 connector or to a fiber port, see "Connecting your router to the network through twisted pair cables."

3.     Verify that the cable is not broken. Use the cable to connect two interfaces of the same type that are operating correctly. If the LEDs of the two interfaces are on, the cable is normal. Otherwise, the cable is broken. 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, verify that the current transceiver module is not faulty by replacing a transceiver module. If the LED of the interface is on after a replacement, the previous transceiver module is faulty.

5.     Verify that the speed and duplex settings of the interfaces for a link are the same. Make sure two interfaces can collaborate correctly.

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

 

	NOTE: After an interface fails, if the router has an idle interface of the same type, you can connect the cable to the idle interface.

 

Troubleshooting CF cards

The MPU provides a CFS LED. When the CF card is operating correctly, the CFS LED is on.

If the CFS LED is off, the CFD card fails.

To troubleshoot the CF card:

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

2.     If the CF card fails because you execute the umount command, you can execute the mount cfa0: command in user view to re-mount the CF card.

3.     Verify that the CF card is fully seated.

4.     Replace the CF card with a backup CF card (if any) to verify that the current CF card is not faulty. For more information, see "Replacing a CF card." If the CFS LED is on after a replacement, the previous CF card is faulty.

5.     If the failure persists, contact the local agents or H3C Support.

Technical support

If the failures still exist, contact the agents or H3C Support. To report the failures, prepare the following information:

·     Arrival time of the router

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

·     Software version

·     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: [email protected]