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Super Contributor I

About 802.11 broadcast frames

Hi community,

 

Do you know how broadcast frames are handled in Wi-Fi? I have been googling but the information I have found in several sites is contradictory. This is some sentences I have found about when an AP sends a broadcast frame:

 

  • Broadcast frames are converted to unicast and sent independently to every single station associated with the AP.
  • Broadcast frames are sent as usual and every station is able to understand them.
  • Broadcast frames are acknowledged by every station.
  • Broadcast frames do not need to be acknowleged.

Do you know what of these senteces are true? Or does the behaviour depends on the vendor?

Guru Elite

Re: About 802.11 broadcast frames

This book will answer a majority of your questions on here:

https://www.amazon.com/CWNA-Certified-Wireless-Administrator-Official/dp/111812779X


Tim Cappalli | Aruba Security TME
@timcappalli | timcappalli.me | ACMX #367 / ACCX #480
Super Contributor I

Re: About 802.11 broadcast frames

Well, after browsing at this book and others, I can conclude that broadcast frames are sent as usual (not converted to unicast) and every station will hear them. In addition, these broadcast frames do not need to be acknowledged. 

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