How to disable higher MCS rates in case of 802.11ac?

Aruba Employee
Aruba Employee

802.11ac has introduced 2 new MCS rates called MCS 8 & 9. By default 11ac APs use upto MCS 9 in all spatial streams.

But it can be configured to ensure that higher MCS rates are not used.


MCS 8 and 9 introduces 256 QAM with Convolution coding of 3/4 and 5/6 rates respectively. These rates are supported in all the Spatial streams. AP 225 supports a maximum of 3 spatial streams.


Environment : AOS version:  AP: AP 225


Network : Controller --------- AP 225s )) (( 11ac Clients.


The configuration to specify the required MCS rates for specific SSID can be done in "WLAN HT-SSID profile". By default max MCS is 9 for all Spatial streams. This can be reduced in Ht ssid profile as below.




Add or revome necessary MCS rates in the HT-ssid profile and map it to the corresponding ssid profile.



rtaImage (1).png


To validate if the configuration has taken effect, check the below command:


rtaImage (2).png

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‎07-04-2014 04:41 PM
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