topic Yes i used inSSDer and fluke in Wireless

What is 802.11bn?

Sean Devo — Mon, 05 Jul 2021 08:57:22 GMT

On my Cisco WLC 5500 series > Monitoring > Clients, I see a bunch of clients connected as 802.11g and 802.11bn. I understand that 802.11g and 802.11b is 2.54Ghz band while 802.11n is 5.0Ghz, but what exactly does it mean when it tells me the client protocol for the device is 802.11bn? Does this mean the client can be either connected to 5.0Ghz or 2.54Ghz? I have not been able to find much documentation on "802.11bn." Thanks

Best Regards,

Sean

Hi Sean,

Rasika Nayanajith — Mon, 17 Nov 2014 21:29:25 GMT

Hi Sean,

802.11n is 5.0Ghz, but what exactly does it mean when it tells me the client protocol for the device is 802.11bn?

802.11n, it can be either 2.4GHz or 5GHz.

So if it shown as 802.11bn, that mean it is a2.4GHz 802.11n client.

HTH

Rasika

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I've included a snapshot of

Sean Devo — Mon, 17 Nov 2014 21:35:29 GMT

I've included a snapshot of my radio policy under WLAN > (my SSID) > General

I have devices that are definitely 5Ghz ready. Is the reason why none of my devices are connecting to 5Ghz due to this being set to 802.11b/g only? Should I change it to "All" if I want my clients to be connected to 5Ghz or 2.54Ghz (depending on the device)?

Best regards,

Sean

Yes, if you set radio policy

Rasika Nayanajith — Mon, 17 Nov 2014 21:40:42 GMT

Yes, if you set radio policy to b/g, then client can only connect using 2.4GHz. Change it to all to support both 5GHz & 2.4GHz clients.

Under WLAN advanced tab, there is a tick box for "band-select" which helps to prefer 5GHz over 2.4GHz if it is a dual band client. You can use that to prefer 5GHz for dual band clients.

HTH

Rasika

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Thank you for the fast

Sean Devo — Mon, 17 Nov 2014 21:43:53 GMT

Thank you for the fast response. One last thing. I know that Cisco's Client Load Balancing during association time requires the device to have CCX compatibility in order for the controller to decide which AP it should connect to. Is this the same case with Band Select? Meaning, if I have a bunch of apple products (that are not CCX ready) would band select being enabled make a difference?

Best Regards,

Sean

HiYes, client load balancing

Rasika Nayanajith — Mon, 17 Nov 2014 21:52:14 GMT

Yes, client load balancing is not something recommend to enable.

Bandselect is different, it simply suppress few probe responses in 2.4GHz, allowing client connect in 5GHz as first preference. This gives some reference on that.

http://ccie-or-null.net/2010/11/10/cisco-band-select/

I have enabled this in my production environment to give better experience for dual band clients.

HTH

Rasika

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Thank you for your insight

Sean Devo — Mon, 17 Nov 2014 22:19:24 GMT

Thank you for your insight and advice!

Best Regards,

Sean

You are welcome.Give us a

Rasika Nayanajith — Mon, 17 Nov 2014 22:21:20 GMT

You are welcome.

Give us a shout any time if you have a query on Cisco wireless.

Thanks for rating our responses as well.

Rasika

Hello Manannalageri need your

Assadullah — Thu, 20 Nov 2014 06:07:13 GMT

Hello Manannalager

i need your support

iam using wlc 5508 and ap 1262 some of my ap is 11/n is enable some of ap is not support the 11/n you can see the snapshot as will can i upgrade the ios of my ap 1262 from wlc site with new ios upload and download

Assad

Hi Assad,Pls post "show ap

Rasika Nayanajith — Thu, 20 Nov 2014 06:13:03 GMT

Hi Assad,

Pls post "show ap summary" & highlight the two AP mentioned in the above.

Also post the "show sysinfo" output of your controller.

Yes, when you upgrade the WLC software, AP will automatically download the required image from WLC.

HTH

Rasika

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Hi Thanks for your replay i

Assadullah — Thu, 20 Nov 2014 08:45:51 GMT

Thanks for your replay i have upgrade my wlc from 7.0.116.0 to 7.6.110.0 but the aps Didn't update there ios

to support 11/n

Assad

Hi Assad,Pls provide the

Rasika Nayanajith — Thu, 20 Nov 2014 08:56:41 GMT

Hi Assad,

Pls provide the requested output as that gives some hint why radio won't come up on that AP.

802.11n support is based on the hardware of AP model, software upgrade won't help on that

HTH

Rasika

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Hi Rasika,

shaikh.zaid22 — Mon, 04 Jan 2016 12:44:26 GMT

Hi Rasika,

i am facing a poor signal strength issue in one of our client site where we have 25 1700i Aps and 5508 wlc in production, using a wifi scanner utility i saw most of the APs are sitting on channel 1 due is it due to this.

Also pls assist me how to migrate from 2.4ghz to 5 ghz space to all my APs and client.

Thanks

Also pls assist me how to

Rasika Nayanajith — Tue, 05 Jan 2016 01:22:25 GMT

Also pls assist me how to migrate from 2.4ghz to 5 ghz space to all my APs and client.

I would create a new SSID (if possible) and set Radio Policy (under WLAN > General page) to 802.11a only. In this way that SSID will only broadcast from 802.11a(5GHz) Radios.

Then see what clients are not able to see that SSID & connect. Then you need to decide what % are those and possible migration to 5GHz capable end points.

i am facing a poor signal strength issue in one of our client site where we have 25 1700i Aps and 5508 wlc in production, using a wifi scanner utility i saw most of the APs are sitting on channel 1 due is it due to this.

Do you see this only on 2.4GHz band ? How does output look like for below command

(WLC1) >show advanced 802.11b txpower

(WLC1) >show advanced 802.11a txpower

HTH

Rasika

Yes i used inSSDer and fluke

shaikh.zaid22 — Tue, 05 Jan 2016 04:41:21 GMT

Yes i used inSSDer and fluke wifi tester to be sure of whether its happenin with clients connecting on 2.4 ghz.,

but for WLANs whose radio policy is set as ALL then also clients are only connecting to 2.4ghz, why not connecting to 5ghz or we need to manually select 5ghz band to used that frequency?

Hello Dear Rasika

Assadullah — Tue, 05 Jan 2016 04:53:08 GMT

Hello Dear Rasika

Kindly give as information about 80.1x how its implement in wireless network what problem we will face during the implementation if possible thanks for your always support

Regards

Assad

(Cisco Controller) >show

shaikh.zaid22 — Tue, 05 Jan 2016 05:21:30 GMT

(Cisco Controller) >show advanced 802.11b txpower

Leader Automatic Transmit Power Assignment
Transmit Power Assignment Mode................. AUTO
Transmit Power Update Interval................. 600 sec
Transmit Power Threshold....................... -70 dBm
Transmit Power Neighbor Count.................. 3 APs
Min Transmit Power............................. -10 dBm
Max Transmit Power............................. 30 dBm
Update Contribution
Noise........................................ Enable
Interference................................. Enable
Load......................................... Disable
Device Aware................................. Disable
Transmit Power Assignment Leader............... ST-WLC
Last Run....................................... 219 sec
Last Run Time.................................. 0 secon
TPC Mode....................................... Version
TPCv2 Target RSSI.............................. -67 dBm
TPCv2 VoWLAN Guide RSSI........................ -67.0 d
TPCv2 SOP...................................... -85.0 d
TPCv2 Default Client Ant Gain.................. 0.0 d
TPCv2 Path Loss Decay Factor................... 3.6
TPCv2 Search Intensity......................... 10 Iter

--More-- or (q)uit

AP Name Channel TxPower Allowe d Power Levels
-------------------------------- ---------- ------------- ------ ------------------
ST-HO-1F-AP-1 *1 *1/7 (17 dBm) [17/14 /11/8/5/2/-1/0]
ST-HO-1F-AP-2 *11 *1/7 (17 dBm) [17/14 /11/8/5/2/-1/0]
ST-HO-1F-AP-3 *6 *1/7 (17 dBm) [17/14 /11/8/5/2/-1/0]
ST-HO-2F-AP-1 *1 *1/7 (17 dBm) [17/14 /11/8/5/2/-1/0]
ST-HO-5F-AP-2 *6 *1/7 (17 dBm) [17/14 /11/8/5/2/-1/0]
ST-HO-5F-AP-1 *1 *1/7 (17 dBm) [17/14 /11/8/5/2/-1/0]

(Cisco Controller) >show advanced 802.11a txpower

Leader Automatic Transmit Power Assignment
Transmit Power Assignment Mode................. AUTO
Transmit Power Update Interval................. 600 seconds
Transmit Power Threshold....................... -70 dBm
Transmit Power Neighbor Count.................. 3 APs
Min Transmit Power............................. -10 dBm
Max Transmit Power............................. 30 dBm
Update Contribution
Noise........................................ Enable
Interference................................. Enable
Load......................................... Disable
Device Aware................................. Disable
Transmit Power Assignment Leader............... ST-WLC (172.16.17.50) (::)
Last Run....................................... 280 seconds ago
Last Run Time.................................. 0 seconds
TPC Mode....................................... Version 1
TPCv2 Target RSSI.............................. -67 dBm
TPCv2 VoWLAN Guide RSSI........................ -67.0 dBm
TPCv2 SOP...................................... -85.0 dBm
TPCv2 Default Client Ant Gain.................. 0.0 dBi
TPCv2 Path Loss Decay Factor................... 3.6
TPCv2 Search Intensity......................... 10 Iterations

--More-- or (q)uit

AP Name Channel TxPower Allowed Power Levels
-------------------------------- ---------- ------------- ------------------------

I suspect your 802.11a

Rasika Nayanajith — Wed, 06 Jan 2016 02:42:01 GMT

I suspect your 802.11a network is disabled on your WLC. Pls check the below command output

show 802.11a

Regarding 2.4GHz, all AP operating it's highest power. If you still see the low RSSI, then I would check at what power level your site survey done.(if you see coverage issues in production)

HTH

Rasika

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Hi Assad,

Rasika Nayanajith — Wed, 06 Jan 2016 02:51:59 GMT

Hi Assad,

Pls read below post for basic understanding what options available for 802.1X deployment in wireless. If you have any specific queries it is better to start a new thread as your query does not align the this tread.

http://mrncciew.com/2014/08/24/cwsp-eap-basics/

HTH

Rasika

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Hi Rasika,

ajc — Fri, 12 Feb 2016 20:47:05 GMT

Hi Rasika,

I have a high density environment and I am evaluating to implement band select because we have too many users connecting on 2.4Ghz to the same AP (not honoring code 17 from AP based on our load-balancing - we do not have voip on the wifi that is why I am using this feature by now).

However from the following link I see Scott Fella not recommending to use it. In fact, on my initial lab tests today using 2 IPADs + 2 Samsung TAB, I saw some unexpected disconnections from IPAD so that goes with the comment from Scott.

https://supportforums.cisco.com/discussion/11564261/apple-macbook-pro-dropping-wireless-connection

https://supportforums.cisco.com/document/109031/apple-macbook-pro-dropping-wireless-connection

I would like to know your impressions based on the implementations you have done. In any case, I am still doing more testing.

In addition to the previous, I am also evaluating what I got in the next link based on some strange behavior on my wifi network but this is a different subject not part of my question.

https://supportforums.cisco.com/discussion/11419641/lap-drops-client-connections

Important to mention that I am using WebAuth (CWA).

thanks