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Fast Ethernet Switching System User’s Guide
LEDs
24
CPU Module
The CPU module, displayed in Figure 13, is at the top of the chassis. This is the only slot
it will work in. If it is not at the top of the chassis, the DES-5016 will not work. See
Table 2: Power LED for an explanation of the Power LED. See Table 3: CPU Module
LEDs for an explanation of the LEDs on the CPU module.
Each LED on the CPU module is explained in detail.
Figure 13: CPU Module
Power
The power LED lights when the DES-5016 is powered on. The purpose is to confirm that
the DES-5016 is getting adequate power.
Table 2: Power LED
Status Color Meaning
On Green DES-5016 is powered on
Off Dark
DES-5016 is powered off, check power
cable and connection
Status
The Status LED indicates the status of a firmware download. The LED will increment
from left to right while firmware is being downloaded. It will be dark during normal
operation.
Diagnostic
The Diagnostic LED is used to diagnose any problem on the DES-5016. If any part of the
DES-5016 fails the POST or if a problem occurs the Diagnostic LED displays a code
indicating the problem. See Chapter 6 for the meaning of the LED code and a
recommended action.
Utilization
The Utilization LED indicates the utilization of the DES-5016’s CPU. It increments from
left to right. The higher the number the greater the utilization.