Cisco CGS 2520 User Manual

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Cisco CGS 2520 Hardware Installation Guide
OL-31444-01
Chapter 1 Product Overview
LEDs
Power Supply Module LEDs
The switch power supply module LEDs are labeled PSU1 and PSU2 (on the switch) and PSU OK (on
the power supply module). They show whether power supply modules 1 and 2 are receiving power. See
Figure 1-6 and Figure 1-9.
Alarm LEDs
Console LEDs
The console LEDs show which console port is in use. See Figure 1-6 and Figure 1-9 for the LED
locations.
If you connect a cable to a console port, the switch automatically uses that port for console
communication. If you connect two console cables, the USB console port has priority.
1. POST = power-on self-test.
Table 1-4 Power Supply Module LEDs
Color System Status
Off Power supply module (1 or 2) is not installed
Green Valid input is present, and the output is within the operating range
Red Valid input is present, and the output is outside the operating range or is not present
Blinking red Valid input is not present
Table 1-5 Alarm Input LEDs
Color System Status
Off No alarm
Amber Minor alarm
Red Major alarm
Blinking red Critical alarm
Table 1-6 Alarm Output LED
Color System Status
Green No alarm
Red Relay closed, alarm present

Cisco CGS 2520 Specifications

General

Brand	Cisco
Model	CGS 2520
Category	Switch
Language	English