Monday 19 August 2013

Turn off fan on Avaya ERS 3510GT-PWR+ (fanless mode)

Now you may be reading this article because you are the "poor" soul who has an Avaya ERS3510GT-PWR+ switch humming away in close proximity to you in your normally silent workspace, or you may be the support guy/gal who has just received the call from said "poor" soul who is complaining about this noisy switch.................

You may have also searching the internet for "turn off fan Avaya ERS 3510GT-PWR+" and come back with almost nothing but the following statement from the support documentation


The ERS 3510GT-PWR+ can operate in one of two different power “modes”. Low Power
Budget mode provides a maximum PoE budget of up to 60W across 8 ports (fanless mode),
while High Power Budget mode provides a maximum of 170 Watts of power across 8 ports
(fan mode). This provides average concurrent power of 7.5W per port in Lower Power Budget
mode or 21.25W per port in High Power Budget mode.


So how do you turn the annoying little fan off?

Its easy (once you know how) with the following two CLI commands.



3510GT-PWR+#conf t
3510GT-PWR+(config)#poe power-mode low-power-budget



Alternately you can perform the change using EDM/COM via the left menu by first click on "Power Management", then PoE, and finally selecting "Power Mode" from the top tab.





Success!

The annoying little fan turns off instantly and you are left with a silent device so you can get back to your thoughts.


BUT WAIT!!!!








I now require more PoE power to run my new IP cameras and wireless access points.  Thats ok, you can either use EDM/COM as shown above and click on highPowerBudget or you can use the following CLI command



3510GT-PWR+(config)#poe power-mode high-power-budget



Finally........Success!







Please leave a comment if you have any questions or if you have found this guide to be useful.  I will attempt to get back to you in a timely manner.

3 comments:

  1. if im not running any poe devices can i just unplug the fans?

    ReplyDelete
  2. If you are not running POE devices where the device has average ambient temperature <30 degrees Celsius you are probably safe in turning off the fan.

    ReplyDelete
  3. One thing I should add to the above is that if you turn of the fan the MTBF will be reduced.

    ReplyDelete