Rear Panel LEDs

Chapter 3 Maintaining the Server

Status LEDs

Table 3-1	Front Panel LEDs (continued)

LED Name	State

CPU fault	• Off—All CPUs are operating properly.

•Amber—At least one CPU has failed.

Network activity

• Off—The server is powered off or in standby power mode.

•Green, blinking—The server is communicating with the network in main power mode. The blink rate is faster as network activity increases.

System fault

• Green—The server is operating properly.

•Amber, blinking—An event that requires a service action has been detected. Investigate other LEDs and check logs to isolate the problem.

Locator

• Off—The Locator LED is not in use.

•Blue, flashing—The Locator LED/button was pressed and the Locator LED flashes on the front and rear panels to help you find the server in a rack.

Power status

• Off—No AC power is present.

•Green, blinking—The server is in standby power mode.

•Green—The server is in main power mode.

See the “Connecting and Powering On the Server (Standalone Mode)” section on page 2-9 for definitions of these power modes.

Figure 3-3shows the names and locations of the rear panel LEDs. A Generation M2 server is shown (the USB ports and the 10/100 Ethernet management port are in slightly different positions for Generation M1). See Table 3-2 on page 3-5for the interpretations of the LED states.

Figure 3-3

Rear Panel LEDs

1	Power supply status LED	4	10/100 Ethernet link status LED

2	Rear Locator LED	5	10/100/1000 Gigabit Ethernet speed LED

3	10/100 Ethernet speed LED	6	10/100/1000 Gigabit Ethernet link status LED

Cisco UCS C200 Server Installation and Service Guide

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