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40mhz intolerant bit

  • 1 June 2015
  • 4 replies

Userlevel 3
Does the IdentiFi Wireless Controller allow for setting a the 40 MHz intolerant bit to only allow 20 MHz channels (2.4 Radio)?

4 replies

Userlevel 7
Let me confirm.

Userlevel 7
Please check out the following GTAC Knowledge article I created on your question.


I hope this helps...

Userlevel 4
I believe there are two scenarios where our AP will step down to 20 Mhz mode.

  1. During intial bootup, the ap will scan whether 40 mhz channel is clear. If it detects any interference from other ap’s, it will step down to 20 mhz.
  2. The processing of the fat intolerant bit only occurs during the association request from a client or a mgmt. command frame from the client.
Userlevel 7
For Reference: http://www.wi-fi.org/content/search-page?keys=AP3825
- Certified for 40 MHz operation in 2.4 GHz, with coexistence mechanisms

I've updated the Knowledge Article https://gtacknowledge.extremenetworks.com/articles/Q_A/Does-the-IdentiFi-Wireless-Controller-allow-for-a-client-sending-a-40-MHz-intolerant-bit-to-only-allow-20-MHz-channels