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204515-C 4-1
Chapter 4
Troubleshooting
This chapter describes troubleshooting techniques for the Passport 8100 modules.
This chapter includes information about the following topics:
• Normal power-up sequence (this page)
• Failure to get a login prompt (page 4-2
)
• Failure of the management software to recognize I/O modules (page 4-2
)
• LED indications of problems (page 4-2
)
• Port connection problems (page 4-4
)
• Installation issues (page 4-7
)
Normal Power-Up Sequence
In a normal power-up sequence, the LEDs display as follows:
1. When power is applied to the switch, the green LED on each power supply
and fan tray turns on within 5 seconds.
2. Each module initiates a self-test, during which the port and module LEDs
display various patterns to indicate the progress of the self-test.
3. Upon successful completion of the self-test (within 10 seconds after power is
applied), the Online LED lights.
For information about the other LEDs on the Passport 8132TX, 8148TX,
8108GBIC, and 8190SM modules, refer to Appendix B, “LEDs
.”