Cisco Systems 9216 manual Identifying Startup Problems

Appendix A Troubleshooting

Identifying Startup Problems

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•Supervisor module—The supervisor module contains the system operating software, so check your supervisor module if you have trouble with the system software. A Status LED indicates whether the supervisor module can initialize the module in slot 2, if present.

•Switching or services module—A Status LED on the module indicates if it was initialized by the supervisor module. A module that is partially installed in the backplane can cause the system to halt.

Identifying Startup Problems

LEDs indicate all system states in the startup sequence. By checking the LEDs, you can determine when and where the system failed in the startup sequence.

To identify startup problems, follow these steps:

Step 1 Turn on the power supply by pressing the switch on (). You should immediately hear the system fan module begin to operate. If you do not, see the “Troubleshooting the Power Supplies” section on page A-5. If you determine that the power supplies are functioning normally and the fan module is faulty, contact your customer service representative. If the system fan module does not function properly at initial startup, there are no installation adjustments that you can make. To replace the fan module, see the “Removing and Installing the Fan Module” section on page 2-31.

Step 2 Verify that the LEDs on the interface module are on as follows:

•The Status LED flashes orange once and stays orange during diagnostic boot tests. It turns green when the module is operational (online). If the system software is unable to start up, this LED stays orange.

•The System LED turns green, indicating that all chassis environmental monitors are reporting that the system is operational. If one (or more) environmental monitors reports a problem, the System LED is orange or red.

	Cisco MDS 9216 Switch Hardware Installation Guide
78-16165-01		A-3