Nortel Networks 1000ASE-XD - Manual (Page 173)

173
Using the BayStack 420 10/100/1000 Switch
Chapter 4
Troubleshooting
This chapter describes how to isolate and diagnose problems with your BayStack
420 Switch and covers the following topics:
• “Interpreting the LEDs ,” next
• “Diagnosing and correcting problems” on page 175
— Normal power-up sequence
— Port connection problems
The chapter topics lead you through a logical process for troubleshooting the
BayStack 420 Switch. For example, because LEDs provide visual indications
of certain problems, see
“Interpreting the LEDs” on page 173 to understand the
various states ( Table 42 ) that your switch LEDs can exhibit during normal
operation.
For more help in determining the problem, “Diagnosing and correcting problems”
on page 175 describes symptoms and corrective actions ( Table 43 ) you can
perform to resolve specific problems. Subsequent sections give step-by-step
procedures to correct the problems.
Interpreting the LEDs
Figure 78 shows the BayStack 420 Switch LED display panel. Table 42 describes
the LEDs.