Cisco Systems 3120 manual Stack Master LED, Stack Member LED, UID and Health LEDs

Models: 3120

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Chapter 1 Product Overview

Other Features

Stack Master LED

The Stack Master LED (MSTR) shows the stack master status. Table 1-3lists the LED colors and their meanings.

Table 1-3

Stack Master LED

 

 

Color

Description

 

 

Off

Switch is not the stack master.

 

 

Green

Switch is the stack master or a standalone switch.

 

 

Amber

An error occurred during stack master election or another type of stack error occurred.

 

 

Stack Member LED

The Stack Member LED (MMBR) shows the switch stack membership number, which ranges

from 1 to 9. The Stack Member LED blinks a number of times equal to the membership number of the switch, pauses, and then repeats the process until you turn off stack mode or until stack mode times out.

Table 1-4lists the LED colors and their meanings when stack mode is on. When stack mode is off, the Member LED is off.

Table 1-4 Member LED With Stack Mode On

Color

Description

 

 

Off

Pause between blinking stack membership number. Duration is 5 seconds. After

 

pause, LED changes to blinking green.

 

 

Blinking green

A total of n on-off cycles with n = switch stack membership number in range 1 to 9.

 

After n on-off cycles, blinking stops, and LED turns off.

 

 

UID and Health LEDs

The UID and Health LEDs are controlled by the blade enclosure software (Onboard Administrator). The UID LED is on when the switch module is identified by the blade enclosure. The Health LED is green during normal operation; it is amber when a failure is detected.

RJ-45 Uplink Port LEDs

The external 10/100/1000BASE-T copper Gigabit Ethernet uplink port LEDs display link and activity information about each individual port. These LEDs are on the top left and right, respectively, of each RJ-45 port (see item 9 in Figure 1-1 on page 1-2). Table 1-5describes the port link LED colors and their meanings.

Table 1-5 Meaning of Port Link LED Colors

 

 

 

 

LED Color

Meaning

 

 

 

 

 

 

 

 

 

 

 

 

Off

No link established.

 

 

 

 

 

 

 

 

 

 

 

Solid green

Link established, no activity.

 

 

 

 

 

 

 

 

 

 

 

Blinking green

Traffic on an established link.

 

 

 

 

 

 

 

 

 

 

Cisco Catalyst Blade Switch 3120 for HP Hardware Installation Guide

 

 

 

 

1-6

 

 

 

 

OL-12246-01

 

 

 

 

 

 

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Cisco Systems 3120 manual Stack Master LED, Stack Member LED, UID and Health LEDs, RJ-45 Uplink Port LEDs