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Chapter 3
Understanding the LEDs
This chapter provides information about the Metro ESU 1800 LEDs. Specifically,
it includes the following topics:
Topic
Displaying status information
The Metro ESU 1800 has LEDs on its front panel that indicate the status of the
internal power supply, the Metro ESU 1800 system, the link between a port and a
remote network device, and the presence of activity on that link.
Figure 8 on page 34
shows the LED indicators for the Metro ESU 1800.
Installing the Metro Ethernet Services Unit 1800
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