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What does the 802.11g protection rate setting do in AP advanced settings

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TitleWhat does the 802.11g protection rate setting do in AP advanced settings
Question
What does the 802.11g protection rate setting do in AP advanced settings?
Environment
  • identifi wireless
  • 802.11 b/g/n
  • Access point
  • CTS
  • RTS
  • 802.11 g/n protection mode
  • Protection rate
Answer
A CTS packet is always sent out at the MBR (Minimum basic rate) configured for the radio.  

The protection rate limit is used to limit the use of protection, protection will only be used when sending to a client at a rate greater than the configured protection limit rate.

For example if the protection rate is set to 11Mbps it means that protection will be only used when sending at rates greater than 11Mbps which means 802.11g rates.
 
Additional notes
This article is not about 802.11 protection itself, for more information on protection, see this article:  What does protection do in 802.11 networks

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