topic RE: High Fan Noise in ExtremeSwitching (EXOS/Switch Engine)

High Fan Noise

Sikander_Shah — Mon, 09 May 2016 11:50:00 GMT

All these below switch models make very loud fan noise. what is the solution to reduce the noise?

Summit X440-48t

Summit X440-48t

Summit X440-24p

Summit X440-48p

RE: High Fan Noise

Ron_Huygens — Mon, 09 May 2016 12:22:00 GMT

Please refer to the X440 datasheet: Fan Speed and Acoustic Noise: http://learn.extremenetworks.com/rs/extreme/images/Summit-X440x-DS.pdf
Has the noise increased over time?
If it is excessively loud, I would suggest opening a case with GTAC to troubleshoot the fan issues.
It is optional to do a dB(A) test to verify the noise level.

RE: High Fan Noise

Zdeněk_Pala — Mon, 09 May 2016 14:34:00 GMT

Hi,

the general answer is to decrease the temperature. there are different fan speed levels based on temperature.

Z.

RE: High Fan Noise

Sikander_Shah — Mon, 09 May 2016 15:26:00 GMT

what temperature is recommended for all these switch mentioned above

RE: High Fan Noise

Ronald_Dvorak — Mon, 09 May 2016 15:29:00 GMT

as per the following article - below 30 (sensor temp) the fan will run on half speed and >30 on full speed

https://gtacknowledge.extremenetworks.com/articles/Q_A/On-a-X440-the-fan-speed-is-always-listed-as-1...

RE: High Fan Noise

Sikander_Shah — Mon, 09 May 2016 15:40:00 GMT

you mean to say that if it is (low temp below 30) switches run normally no noisy sound or if it is (high temp) switches make noisy sound.?

RE: High Fan Noise

Ronald_Dvorak — Mon, 09 May 2016 20:05:00 GMT

<30 = half fan speed
>30 = full fan speed
So the fan will allways run no matter what the temperature is.
But if the temperatur is greater 30 the fan will run with full speed = max noise.

RE: High Fan Noise

modris_bernands — Tue, 10 May 2016 01:11:00 GMT

Offtopic - is there any loud specification about Extreme EPS-500?

I turn it off when I need to be in server room... 🙂

Re: RE: High Fan Noise

khosro1982 — Sun, 04 May 2025 14:55:18 GMT

Dear sikandar

it was a bad bug in EXOS system, even X440-G2 models have high fan speed problem!!!! as a solution some users have mentioned that in newer versions of EXOS this problem has been solved and if you migrate to higher versions of EXOS this problem will be solved! but no one has mentioned about Summit X440-24t or 24P or 48P models!!!! my recommendation is to upgrade the x440-24p to the highest supported EXOS version and check if the problem has been solved or not!!! be careful newer image models only support x440-G2 models not X440-24P. read the documents before any upgrade

Re: High Fan Noise

Gabriel_G — Wed, 14 May 2025 13:51:11 GMT

In addition to what Ronald mentioned, the fan speed is dynamically determined based on the switch temp and PoE load. You can try to remove PoE devices and reduce the temperature to reduce the fan speed, but otherwise it is completely automatic. Some switches are louder than others, I know that some newer models are fanless and silent, and some are jet planes, depending on the application. Acoustic specs are usually in the product datasheet or hardware installation guide.