Clients joining B Radio

[Koevi Vong]

Hi,

I am having an issue where clients are joining the B Radio instead of A/G.

I have even disabled 11mbs and below data rates under the B/G/N radio section and set the SSID to A/G Only but clients are still joining the B Radio.

Currently running a Virtual WLC version 7.3.101.0

Has anyone come across this issue or know a fix?

Thanks

[Scott Fella]

Yes sir!  What Brian has explained is correct.  Its modulation you need to understand.  Modulation between devices is required in order for communication to work and work well.  MIMO allows for connection >54mbps due to the standards for MIMO and 802.11n.  This could go on forever, but if you disable 1mbps, 2.2mbps, 5mbps, and 11mbps, you will not have any 802.11b client's join.  I put an old 7920 802.11b phone so you can see how it looks.  At least you should now have an understanding of what you will see.

Thanks,

Scott

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[Scott Fella]

Difference between DSSS and OFDM

https://learningnetwork.cisco.com/thread/10626

Thanks,

Scott

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[Koevi Vong]

Thanks Scott,

The only thing thats confusing me is why its showing me B/N instead of G/N even though i have disabled B Radio data rates and set the SSID to A/G only.

Thanks

[Scott Fella · Accepted solution]

That is how Cisco coded the WLC.

Thanks,

Scott

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[Koevi Vong]

ah okay, appreciate the help

Thanks!

[Scott Fella]

No problem.. hope this thread gave you a better understanding.

Thanks,

Scott

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