How can I unconfigure the 802.11b protocol at all my 4610 APs? The AP are controlled by a WM3700.

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We have to apply some changes at the wireless infrastructure, one of them is disable or unconfigure the 802.11b protocol, but I was looking for some method to apply it for all the APs at once. I only know how to do that but one by one AP
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Josimar Rivera

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  • confused.

Posted 4 years ago

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Sean Hogston, Extreme Alumnus

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You can change it at the AP profile level instead of the AP itself. This way it will get applied to all APs that use that profile.

Sean
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Laura

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why do you want to unconfigure 802.11b?
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Laura

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that makes sense, thank you for the explanation,
i have another question you might be able to help with,
We have enterasys 3605 APs in our schools. Radio 1 is on a/n mode on the 5 GHz band and Radio 2 is on g/n mode on 2.4 GHz.
I read somewhere that g is backwards compatible with b, so does that mean the performance drops to 11Mbps if a b device connects to g?
 
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Sean Hogston, Extreme Alumnus

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its only backwards compatible if you have b turned on. If you have it set to g/n instead of b/g/n then the b client should not be able to connect.
You will want to test this to verify though.
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Laura

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when i look at the clients that are attached to the AP, it says they are using b/g.
does transmit power have anything to do with performance? Both radios are set to "Max Tx Power" at 24 dBm.  radio 2 current Tx power is always higher than radio 1 Tx power.
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Ronald Dvorak, Embassador

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"..... so does that mean the performance drops to 11Mbps if a b device connects to g?"

Please keep in mind that even if you configure g/n only that the min. basic rate of 802.11g is 6mb.
So even with g/n only a client at the border of the WLAN cell could connect with "only" 6mb.

Make sure to enable Flexible Client Access...
>VNS > Global > Wireless QoS -> Flexible Client Access AND also on the WLAN Service in the QoS section
...so every client get's the same time to tx data = slower clients will not affect faster clients.

Another thing is to reduce the number of SSID to a minimum as all the beacon/mgmt frames are tx with min basic rate and that could result in a BIG overhead = wasted airtime = wasted bandwidth.

* i.e. AP with 6 SSID..
min basic rate 1mb = 26% utilization
min basic rate 2mb = 13% utilization
min basic rate 6mb = 4.3% utilization
...if you tx only 3 SSIDs you'd reduce also the overhead by 50%
*from a Extreme presentation
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Laura

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We have the flexible client access enabled, and have 3 ssid's
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Sean Hogston, Extreme Alumnus

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it is the smart thing to do if you want the best performance from your WLAN
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Josimar Rivera

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Thanks, I had not realized where I can apply the change.