H3C S5800和S6500交换机风扇反转告警

S5800加电之后出现告警提示:(设备后面板风扇指示灯橙色闪烁,前面板指示灯红色常亮)

display  version    #版本
H3C Comware Software, Version 7.1.045, Release 7123
Copyright (c) 2004-2017 New H3C Technologies Co., Ltd. All rights reserved.
H3C S5800-56C-EI uptime is 0 weeks, 0 days, 0 hours, 24 minutes
Last reboot reason : Cold reboot

%Jan  1 00:05:45:309 2011 H3C DEV/1/FAN_DIRECTION_NOT_PREFERRED: Fan 1 airflow direction is not preferred on slot 1, please check it.
%Jan  1 00:05:45:310 2011 H3C DEV/1/FAN_DIRECTION_NOT_PREFERRED: Fan 2 airflow direction is not preferred on slot 1, please check it.

S6500加电之后出现一样的提示(前面板指示灯红色常亮)

display  version
H3C Comware Software, Version 7.1.045, Release 2432P05
Copyright (c) 2004-2017 New H3C Technologies Co., Ltd. All rights reserved.
H3C S6520-42QF-EI uptime is 0 weeks, 0 days, 0 hours, 3 minutes
Last reboot reason : Cold reboot

[H3C]%Jan  1 00:03:46:268 2011 H3C DEV/1/FAN_DIRECTION_NOT_PREFERRED: Fan 1 airflow direction is not preferred on slot 1, please check it.
%Jan  1 00:03:46:269 2011 H3C DEV/1/FAN_DIRECTION_NOT_PREFERRED: Fan 2 airflow direction is not preferred on slot 1, please check it.

display  fan 
 Slot 1:
 Fan 1: 
 State    : FanDirectionFault
 Airflow Direction: Port-to-power
 Prefer Airflow Direction: Power-to-port
 Fan 2: 
 State    : FanDirectionFault
 Airflow Direction: Port-to-power
 Prefer Airflow Direction: Power-to-port

问题出现原因:

检查交换机风扇配置信息发现交换机风扇的实际气流方向为 Airflow Direction: Port-to-power;而配置用户下看到风扇模块的首选气流方向为:Prefer Airflow Direction: Power-to-port,两者不一致(交换机风扇反转),导致交换机风扇状态为:State    : FanDirectionFault,风扇信号灯告警,交换机SYS信号灯告警。

处理方法:

因为风扇模块的实际气流方向是无法改变的,只能去改变风扇模块的首选气流方向和风扇实际气流方向一致,操作步骤如下:

display fan 
 Slot 1:
 Fan 1: 
 State    : FanDirectionFault               #风扇方向故障
 Airflow Direction: Port-to-power           #实际气流方向
 Prefer Airflow Direction: Power-to-port    #首选气流方向
 Fan 2: 
 State    : FanDirectionFault
 Airflow Direction: Port-to-power
 Prefer Airflow Direction: Power-to-port

调整交换机的首选气流方向:

[H3C]fan  prefer-direction  slot 1 port-to-power
[H3C]display  fan 
 Slot 1:
 Fan 1: 
 State    : Normal                        #状态正常
 Airflow Direction: Port-to-power         #实际气流方向
 Prefer Airflow Direction: Port-to-power  #首选气流方向
 Fan 2: 
 State    : Normal
 Airflow Direction: Port-to-power
 Prefer Airflow Direction: Port-to-power

修改配置后,交换机各指示灯恢复正常

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