无线控制器5520风扇问题

[nightcauld11252]

在控制器界面看风扇状态是正常的，但是时不时的就会有很响的声音，持续时间也不长。控制器在机房里面，温度正常，大佬们，这可能有哪些原因啊？属于正常情况还是异常情况啊？

[zhengwei272]

正常情况 show出来的或者web界面看到的数据正常就没事

[LxL9905]

目前风扇转着，属正常，还没形成故障，它应该是有2个风扇，可以看下是哪个发出异响，有可能是转着不流畅导致

[Rps-Cheers]

你好，我认为这个可能是存在已知的bug，5520和8540可能都会出现，如下列举两个bug：这都和FAN异响有关系，建议升级到suggested版本。
DN1/DN2: Need closed loop 5520/8540-Cavium fan control
CSCuu86587
Description
Symptom:
Excessively loud fan noise complaints
Conditions:
Worst case thermal condition is observed with low fan speeds while DN Intel CPU is idled or under light loading while the Cavium CPU is under 100% load. Fans adjust to Intel thermal conditions but do not account for Cavium card conditions
Cavium die temperatures increase at higher altitudes, but fan speeds do not track accordingly
Workaround:
Further Problem Description:
-------------------------------------------------------------
Anomalous Fan Speed/Temp reading for 8540
CSCux93468
Description
Symptom:
Customer 8540 on 8.2.100.0, reports high speed noise, even when power profile is low temp
Fanloop stats shows negative max temp, and extremely high avg temp reading
Conditions:
8540 controller
The reading of test command, shows invalid temperature range:
Cisco Controller) >test imm chassis fanloop-stats
Fan Policy : Low power
..
Max Temp read : -1 <---here
Min Temp read : 25
Avg Temp read : 270002 <--- here
..
Poll Durtaion : 3
Workaround:
possibly a reboot
Further Problem Description:

[Rockyw]

将外壳打开看看出现很响声音时，风扇有没有异常情况。