Cisco SN 5428 Storage Router Hardware Installation Guide
Chapter 3 - Troubleshooting
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Troubleshooting

Table Of Contents

Troubleshooting

Solving Problems at the Component Level

Identifying Startup Problems

Troubleshooting the Power Supply

Troubleshooting a Network or Fibre Channel Port Connection

Troubleshooting a Connection to a Gigabit Ethernet Port

Troubleshooting a Connection to a 10/100 Ethernet Management or 10/100 Ethernet HA Port

Troubleshooting a Connection to a Fibre Channel Port

Contacting Customer Service


Troubleshooting


This chapter provides troubleshooting procedures for problems encountered during installation and consists of the following sections:

Solving Problems at the Component Level

Identifying Startup Problems

Troubleshooting the Power Supply

Troubleshooting a Network or Fibre Channel Port Connection

Contacting Customer Service

Solving Problems at the Component Level

The key to success when troubleshooting the SN 5428 Storage Router is to isolate the problem to a specific storage router component. The first step is to compare what the SN 5428 Storage Router is doing to what it should be doing. Because a startup problem is usually attributed to a single component, it is more efficient to isolate the problem to a subsystem rather than troubleshoot each separate component in the storage router.

The SN 5428 Storage Router chassis consists of the following subsystems:

The power supply operates whenever system power is on (see the "Troubleshooting the Power Supply" section).

The chassis fan assembly operates when the system power is on. The fan may continue to operate even when the power supply shuts down the SN 5428 Storage Router because of an overtemperature or overvoltage condition (although it does shut down for a power supply shutdown).

The following are simple checks you can make to determine if there is a fan problem:

Listen to the fan assembly to determine if it is operating.

Check for any obstructions restricting airflow through the storage router.

If you determine that the fan assembly is not operating properly, contact a customer service representative.

Identifying Startup Problems

Observe the operation of the SN 5428 Storage Router and its front-panel LEDs to determine startup problems. LEDs indicate storage router states in the startup sequence. By checking the LEDs, you can determine when and where the storage router failed in the startup sequence.

Perform the following steps when you power up the SN 5428 Storage Router:


Step 1 Listen for the chassis fan assembly operation. If it does not operate, see the "Troubleshooting the Power Supply" section. If you determine that the power supply is functioning normally and that the fan assembly is faulty, contact a customer service representative. If the fan assembly does not function properly at initial startup (there are no installation adjustments that you can make), contact a customer service representative.

Step 2 Check the POWER LED on the front panel. The POWER LED turns on immediately when power is on. The LED remains on during normal SN 5428 Storage Router operation. If the LED is not on, see the "Troubleshooting the Power Supply" section.

Step 3 Check the STATUS and FAULT LEDs on the front panel. See the "Front-Panel LEDs" section for LED descriptions.

Step 4 Check the network and Fibre Channel port LEDs on the front panel. See the "Front-Panel LEDs" section for LED descriptions. If a network or Fibre Channel port LED indicates a problem with the port connection, see the "Troubleshooting a Network or Fibre Channel Port Connection" section.

Step 5 Verify that the PC terminal emulation program is set correctly and that the PC is connected properly to the console port. Also, verify at the PC terminal emulation program display that the SN 5428 has started up properly (for example, a prompt for starting a configuration wizard or a CLI prompt).

Step 6 Contact a customer service representative for instructions if a status LED indicates a failure or if the PC connected to the console port indicates an incomplete boot-up process.


Troubleshooting the Power Supply

To help isolate a power problem, follow these steps:


Step 1 Check the POWER LED.

If the POWER LED is off, unplug the power cord, and then plug the power cord back in.

If the POWER LED remains off, check the AC source or the power cable for problems.

Step 2 Connect the power cord to another power source if one is available.

If the POWER LED comes on, the problem is the first power source.

If the POWER LED is off after you connect the power supply to a new power source, replace the power cord.

If the POWER LED still fails to light when the storage router is connected to a different power source with a new power cord, the power supply is probably faulty.

Step 3 If you are unable to resolve the problem, contact a customer service representative for instructions.


Troubleshooting a Network or Fibre Channel Port Connection

If an LED on a network or Fibre Channel port indicates a problem, follow the steps in the following sections to help isolate the problem:

Troubleshooting a Connection to a Gigabit Ethernet Port

Troubleshooting a Connection to a 10/100 Ethernet Management or 10/100 Ethernet HA Port

Troubleshooting a Connection to a Fibre Channel Port

Troubleshooting a Connection to a Gigabit Ethernet Port

A bad connection to a Gigabit Ethernet (GE 1 or GE 2) port is indicated by the LINK LED not being on. If the LINK LED is not on, follow these steps to help isolate the problem:


Step 1 Check to make sure that the cable is connected properly and in good operating condition.

Disconnect and connect both ends of the cable. If the LINK LED turns on, then the cable was not connected properly.

If the LINK LED remains off, replace the cable. If the LINK LED turns on, then the cable was defective.

If the LINK LED remains off, the cable is most likely not the problem. Continue to the next step.

Step 2 Check the external end system, switch, or router to which the port is connected.

If the external end system, switch, or router is operating properly, continue to the next step.

If the external end system, switch, or router is not operating properly, then correct the problem. If the LINK LED turns on, then the problem was with the external end system, switch, or router.

If the LINK LED remains off, continue to the next step.

Step 3 Replace the SFP module.

If the LINK LED turns on, the problem was the SFP module.

If the LINK LED remains off, contact a customer service representative for instructions.


Troubleshooting a Connection to a 10/100 Ethernet Management or 10/100 Ethernet HA Port

A bad connection to the 10/100 Ethernet Management or the 10/100 Ethernet HA port (MGMT 10/100 or HA 10/100) is indicated by the ACT LED not being on. If the ACT LED is not on, follow these steps to help isolate the problem:


Step 1 Check to make sure that the cable is connected properly and in good operating condition.

Verify that the cable is the correct type of cable. (See "Cable and Port Pinouts".)

Disconnect and connect both ends of the cable. If the ACT LED turns on, then the cable was not connected properly.

If the ACT LED remains off, replace the cable. If the ACT LED turns on, then the cable was defective.

If the ACT LED remains off, the cable is most likely not the problem. Continue to the next step.

Step 2 Check the external end system, switch, or router to which the port is connected.

If the external end system, switch, or router is operating properly, continue to the next step.

If the external end system, switch, or router is not operating properly, then correct the problem. If the ACT LED turns on, then the problem was with the external end system, switch, or router.

If the ACT LED remains off, contact a customer service representative for instructions.


Troubleshooting a Connection to a Fibre Channel Port

A bad connection to a Fibre Channel port (FC 1 through FC 8) is indicated by the LOG LED flashing twice per second. If the LOG LED is flashing twice per second, follow these steps to help isolate the problem:


Step 1 Make sure that the Domain ID of the SN 5428 is configured properly. For information about configuring the Domain ID, see the Cisco SN 5428 Storage Router Software Configuration Guide. If the Domain ID is configured properly, continue to the next step.


Note When a connection problem is resolved, the LOG LED will turn on after a brief logging-in period that is indicated by the LOG LED flashing once per second.


Step 2 Check to make sure that the cable is connected properly and in good operating condition.

Disconnect and connect both ends of the cable. If the LOG LED turns on, then the cable was not connected properly.

If the LOG LED remains off, replace the cable. If the LOG LED turns on, then the cable was defective.

If the LOG LED remains off, the cable is most likely not the problem. Continue to the next step.

Step 3 Check the device or switch to which the port is connected.

If the device or switch is operating properly, continue to the next step.

If the device or switch is not operating properly, then correct the problem. If the LOG LED turns on, then the problem was with the device or switch.

If the LOG LED remains off, continue to the next step.

Step 4 Replace the SFP module.

If the LOG LED turns on, the problem was the SFP module.

If the LOG LED remains off, contact a customer service representative for instructions.


Contacting Customer Service

If you are unable to solve a startup problem after using the troubleshooting suggestions in this chapter, contact a customer service representative for assistance and further instructions. Before you call, have the following information ready to help your service representative assist you as quickly as possible:

Date you received the SN 5428 Storage Router

Chassis serial number (located on the upper-right label on the rear panel of the chassis)

Type of software and release number

Maintenance agreement or warranty information

Brief description of the problem

Brief explanation of the steps you have taken to isolate and resolve the problem