Wireless Access

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Contributor I

802.11n client

Hi,

 

We use Airwave to manage Cisco 5508 WLC and 3600 APs. In RF Performance tab the clients in HT 40 MHZ (2,4 and 5 GHz) are zero, however 802.11n and 40 MHz are enabled in WLC (WPA2-AES, WMM enabled, etc.) and clients are 802.11n capables. Is this normal? Can Airwave show HT 40 MHz Cisco clients?

 

 

 

 

Thanks

Regards

 

Re: 802.11n client

Hi,

Can u please screenshot your WLC ssid profile (the one with the 40mhz in 2.4ghz and 5.0ghz) - please , in order for us to understand if u should open a TAC or if it's an OK behavior.

 

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Contributor I

Re: 802.11n client

I attach SSID profile and some interesting screenshoots. Can we see  in Airwave the data rate (mbps) of connected clients?

 

Thanks in advance

Moderator

Re: 802.11n client

The RF Performance tab will only display SNR values from Cisco.  The speed and goodput graphs are only populated with information from Aruba device that support AMON (this is also mention in the user guide).

 

To see data rates for Cisco clients, you'll have to view the client list.  You'll see SSID, connection mode, and speed for clients on the client list page.


Rob Gin
Senior QA Engineer - Network Services
Aruba Networks, a Hewlett Packard Enterprise Company
Contributor I

Re: 802.11n client

Hi,

 

We need to know why the HT 40 MHz client count is zero. We have WLC configured to provide 40 Mhz and some clients connect this way. In client list, where data rate column is? Why “Ch BW” column is blank?

 

 

Thanks

Regards

Moderator

Re: 802.11n client

Go to Clients -> Connected

 

My list view is currently a custom set, so it may take some customization.

(sample of list view)

client-connected.jpg

 

Above the list view table is 'choose columns'

Select 'connection mode' and 'ch bw' and then save (at the top of the list)

After saving, the 2 columns should appear after page refresh.

choosecolumns.jpg

 

If 'Ch BW' entries are blank, it's possible that the source (Poll/Trap/AMON) did not carry the value.  On my lab AMP (which is currently only monitoring Aruba devices), I see the data coming from AMON source.  This may be a good point to open a support case to dig deeper, an SNMP walk of .1 OID may show whether or not the controller is providing the values.


Rob Gin
Senior QA Engineer - Network Services
Aruba Networks, a Hewlett Packard Enterprise Company
Contributor I

Re: 802.11n client

Here you can see our speed, goodput, connection mode and Ch BW columns.

 

It is clear that speed and goodput are only populated with information from Aruba device that support AMON and it seems the same with Ch BW. But we don’t understand why Ch Bw column is blank in client list but in RF performance tab we can see how many clients are connected in HT 20 MHz. If Airwave is not capable of reading Ch BW information from Cisco devices, how does it know HT20 client count? Why is Ch BW blank instead of HT20 tag for these clients?  

 

 

Descripción: http://community.arubanetworks.com/aruba/attachments/aruba/airwave/2395/1/Clients.jpg

Contributor I

Re: 802.11n client

I'm sorry, here I attached the images

Moderator

Re: 802.11n client

It's very possible that the OID we use for the values may have changed for a Cisco device.  What's the firmware version of the WLC so I can check in the code?


Rob Gin
Senior QA Engineer - Network Services
Aruba Networks, a Hewlett Packard Enterprise Company
Contributor I

Re: 802.11n client

Hi, 

 

The firmware version of the WLC is 7.2.111.3

 

Thanks

Regards

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