[All About Switches - Maintenance Tips] Tips on Identifying Indicators on Modular Switches Highlighted

Latest reply: Feb 18, 2019 15:48:30 2173 2 0 0

Indicators are like gestures of switches, helping us maintain switches. Today, let me elaborate on indicators on modular switches.

Indicators of a modular switch are located on the panel of each module, and can be red, yellow, or green.

Generally, red indicates that a fault has occurred or a major alarm has been generated, which requires immediate actions. Yellow indicates that a minor alarm has been generated or the component is in the critical state. In this case, you need to eliminate risks instantly. Green indicates that the component is working normally.

The word "card" mentioned below may refer to main processing unit (MPU), cluster switching system (CSS) service unit, line processing unit (LPU), switch fabric unit (SFU), or value-added service card.

1 Indicator Turns Red

1.1 A Card's RUN/ALM Indicator Turns Red

RUN/ALM Steady Red

fig_dc_s_hw_09111201.gif

 

Meaning and Reaction

The card is faulty and manual intervention is required.

 

1.2 A Power Module's Indicator Turns Red

The FAULT indicators on 2200 W DC, 800 W AC, 3000 W AC, and 2200 W AC power modules of the S7700 and S9700 turn red in the same situation. The indicator of a 2200 W AC power module is used as an example here.

FAULT Steady Red

2200DC红色常亮.png

 

Meaning and Reaction

The power module is experiencing an unrecoverable failure. See power module fault location in the Huawei S Series Campus Switches Maintenance Guide.

 

The ALARM indicators on 2200 W DC, 3000 W AC, and 2200 W AC power modules of the S12700 turn red in the same situation. The indicator of a 2200 W AC power module is used as an example here.

ALARM Steady Red

2200W交流电源模块ALARM红常亮12700.png

 

Meaning and Reaction

The power module is experiencing overtemperature, external short circuit, output overvoltage, output overcurrent, or a fan failure. See power module fault location in the Huawei S Series Campus Switches Maintenance Guide.

ALARM Blinking Red

2200W交流电源模块ALARM红慢闪12700.gif

 

Meaning and Reaction

The power module fails to communicate with the CMU. Troubleshooting methods:

1.    Check whether the MPU and CMU are both present in the chassis, and run the display device command to check whether the CMU is working normally.

2.    Contact Huawei technical support.

 

The ALM indicator on the 1600 W DC power module of the S7700 turns red.

ALM Steady Red

1600DC红色常亮.png

 

Meaning and Reaction

The protection circuit fails. See power module fault location in the Huawei S Series Campus Switches Maintenance Guide.

 

1.3 A CMU's RUN/ALM Indicator Turns Red

RUN/ALM Steady Red

fig_dc_s_hw_09067901-2.png

 

Meaning and Reaction

The card is faulty and manual intervention is required.

RUN/ALM Fast Blinking Red

CMU指示灯红色快闪.gif

 

Meaning and Reaction

The available power of the switch is sufficient or a 1600 W DC power module is installed in the switch.

RUN/ALM Slow Blinking Red

CMU指示灯红色慢闪.gif

 

Meaning and Reaction

The switch is in alarm state (for example, a CMU, fan module, or power module has failed).

 

1.4 A Fan Module's RUN/ALM Indicator Turns Red

The RUN/ALM indicators on fan modules of the S7700, S9700, and S12700 turn red in the same situation. A fan module of the S12700 is used as an example here.

RUN/ALM Steady Red

12700风扇模块RUNALM指示灯红色常亮.png

 

Meaning and Reaction

The fan module has a hardware fault and must be replaced.

RUN/ALM Blinking Red

12700风扇模块RUNALM指示灯红色常亮.png

 

Meaning and Reaction

An alarm has been generated. You need to check the fan module to determine whether to replace it.

 

2 Indicator Turns Yellow or Green

2.1 A Power Module's ALM Indicator Turns Yellow

The ALM indicators on 2200 W DC, 800 W AC, 3000 W AC, and 2200 W AC power modules of the S7700 and S9700 turn yellow in the same situation. The indicator of a 2200 W AC power module is used as an example here.

ALM Steady Yellow

2200W交流电源模块ALM黄色常亮.png

 

Meaning and Reaction

The power module has stopped supplying power due to overtemperature, input overvoltage, input undervoltage, or output overcurrent. See power module fault location in the Huawei S Series Campus Switches Maintenance Guide.

ALM Blinking Yellow

2200W交流电源模块ALM黄色闪烁.gif

 

Meaning

Communication between the power module and the monitoring module (MPU or CMU) is interrupted.

Reaction

1.    Check whether the MPU and CMU are both present in the chassis, and run the display device command to check whether the CMU is working normally.

2.    Contact Huawei technical support.

 

2.2 A Card's RUN/ALM Indicator Turns Yellow or Green

RUN/ALM Steady Yellow

单板指示灯黄色常亮.png

 

Meaning and Reaction

The card is in power-off state. For example, the card has been forcibly powered off using the power off command or is starting.

RUN/ALM Steady Green

单板指示灯绿色常亮.png

 

Meaning

The card has been powered on but the system software is not running.

RUN/ALM Slow Blinking Green

单板指示灯绿色慢闪.gif

 

Meaning

The system software of the card is running normally.

RUN/ALM Fast Blinking Green

单板指示灯绿色快闪.gif

 

Meaning

The system software of the card is starting.

 

2.3 A Service Port Indicator Turns Yellow or Green

Optical Port Indicator Turns Yellow or Green

光接口指示灯亮.gif

 

Meaning

The green one is the LINK indicator. If it is steady green, the port has been correctly connected. The yellow one is the ACT indicator. If it is blinking fast, the port is transmitting or receiving data. In the figure, the LINK and ACT indicators with down arrowheads indicate the status of port 37, while those with the up arrowheads indicate the status of port 38.

Electrical Port Indicator Turns Yellow or Green

电接口指示灯.gif

 

Meaning

If the LINK/ACT indicator is steady on, the port has been correctly connected. If the indicator is blinking fast, the port is transmitting or receiving data. In the figure, the indicator on the left indicates the status of port 36, while the one on the right indicates the status of port 37.

 

3 Indicator Is Off

You do not need to pay attention to off indicators in most cases. The situations that require attention on off indicators are described here.

3.1 A Power Module's Indicator Is Off (S12700)

Indicators on 2200 W DC, 2200 W AC, and 2200 W AC power modules of the S12700 turn off in the same situation. When the INPUT indicator is off, the power module has no power input. You need to check the power input line and external power source. When the OUTPUT indicator is off, the power module provides no power output. You need to check whether the power switch of the power module is in the ON position.

4 Determining Cluster Information by Indicators

You can observe indicators on MPUs and CSS cards in member switches of a cluster to determine the active/standby MPUs of the cluster and CSS IDs of the member switches.

4.1 Cluster Established Using Service Ports

Only the S7700 and S9700 support service port clustering. If a cluster is established using service ports of member switches, you can observe ACT indicators of MPUs to determine the active and standby MPUs of the cluster.

ACT Steady Green

主控板ACT灯常亮.png

 

Meaning

The card is the active MPU of the cluster.

ACT Slow Blinking Green

主控板ACT灯慢闪.gif

 

Meaning

The card is the hot standby MPU of the cluster.

ACT Off

主控板ACT灯常灭.png

 

Meaning

The card is the cold standby MPU of the cluster.

 

4.2 Cluster Established Using CSS Cards

The CSS ID of a member switch can be determined by the CSS ID indicators on its MPUs.

The active MPU of the cluster can be determined by the CSS MASTER indicator on the MPU.

The master switch of the cluster can be determined by the MASTER indicators on CSS cards.

MPU's CSS ID Indicator Steady Green

主控板CSS ID指示灯常绿.png

Meaning

There are eight CSS ID indicators on the panel, but only one is on at a time. If the CSS ID indicator of number N is steady green, the CSS ID of the local switch is N. In this example, the CSS ID is 2.

MPU's CSS MASTER Indicator Steady Green

主控板CSS MASTER指示灯常绿.png

Meaning

The card is the active MPU of the cluster.

CSS Card's MASTER Indicator Steady Green

集群卡MASTER指示灯常绿.png

Meaning

The local switch is the master switch of the cluster.

 

5 Determining Active/Standby State of a Card by the ACT Indicator

The S7700, S9700, and S12700 support redundancy of MPUs and CMUs. The methods for identifying the active/standby state of an MPU and CMU are the same. CMU is used as an example here.

ACT Steady Green

CMU指示ACT灯绿色常亮.png

 

Meaning

The card is the active card of the switch.

 

 

 

 

  • x
  • convention:

user_2790689
Created Apr 12, 2017 11:30:34 Helpful(0) Helpful(0)

good
  • x
  • convention:

VIKI1
Created Feb 18, 2019 15:48:30 Helpful(0) Helpful(0)

Can some one share QUIDWAY S3300 Series POE firmware .
  • x
  • convention:

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