Some devices can not see the ssid

  • 1
  • Question
  • Updated 3 years ago
Hi everyone,

I'm doing with one AP 121 with wpa2 authentication. But some devices such as mobile or laptop can not see the ssid. While almost them can see the ssid and can connect with it.

Can you trouble it for me? thanks
Photo of Trinh Sy

Trinh Sy

  • 9 Posts
  • 0 Reply Likes

Posted 4 years ago

  • 1
Photo of Steve Kellogg

Steve Kellogg

  • 87 Posts
  • 2 Reply Likes

Until someone more knowledgeable replies, you can check the following:

Are your APs using both the 2.4 and 5 GHz bands?  If only 5 GHz is enabled devices without dual-band radios won't see an SSID broadcast on those APs.

You can go into Configuration > Configure and Update Devices, click an AP and see if the Admin State of the 2.4 GHz interface is up or down.  If it's down then it won'e be available and devices without dual-band radios won't be able to see SSIDs broadcast on that AP.

Photo of Jonathan Hurtt

Jonathan Hurtt

  • 98 Posts
  • 48 Reply Likes
After you check what Steve recommended you could also use Client Monitor to get a deeper level of troubleshooting.

You also might want to create a brand new SSID object to make sure none of the defaults have been changed (disabling WMM or altering data rates) which could cause client issues as well.
Photo of Trinh Sy

Trinh Sy

  • 9 Posts
  • 0 Reply Likes
I checked  the bands. My AP use both 2.4 and 5 GHz bands. And I also create the new brand SSID and apply to the AP but its not working. My clients can not see the SSID broadcast is mobiphone (lumia) and laptop (dell).
This is my setting for AP
Photo of Jonathan Hurtt

Jonathan Hurtt

  • 98 Posts
  • 48 Reply Likes
Trinh,

While you have shown us that your Access Point has 2.4 and 5.0 Ghz Radios enabled it could be that the SSID is only applied (through the SSID configuration) to one radio, Can you provide a screenshot of your Network Policy and one of the SSID in question with the Data Rates expanded? 

Thanks
Photo of Trinh Sy

Trinh Sy

  • 9 Posts
  • 0 Reply Likes
Hi Jonathan,

That problem was solved when I create new brand WLAN Interface 2.4GHz/ 5GHz are Wifi_01/Wifi_02. It's shown in the picture below. That client is connected to the SSID.

However, when I deploy new AP 121 in another project, that problem is still met. I try to create new brand WLAN Interface like as  what I do before. But Its not working. I dont know how to fix it. Can you help me with it. This is my configuration for SSID and Data Rates

Photo of Jonathan Hurtt

Jonathan Hurtt

  • 98 Posts
  • 48 Reply Likes
I did notice that your first screenshot showed your 2.4Ghz radio to be set up for 802.11b/g/n but your second screenshot showed 802.11b/g only, it seems you have the radio mode for your new Radio Profile to 802.1b/g rather than 802.11b/g/n.  I am also not sure what changes you made to these Radio Profiles. I would change the radio profiles to radio_g0 and radio_a0 and see if you still experience issues (These are the default 802.11b/g and 802.11a radio profiles)

I would still be interested in a client monitor output of one of the clients with the default radio profiles (radio_ng0 and radio_an0). Hope this helps.
Photo of Olof

Olof

  • 2 Posts
  • 0 Reply Likes
I had a similar problem. I could not get 2,4ghz radio to work on a AP230. 

I tried everything. reset config in CLI, reboot, new Network Policy, new SSID, remove everything, start over, different radio modes, pull power cord on AP, etc etc...

The thing that DID help was to set 2,4ghz radio to NOT auto in sending power. Eg 15dBm. Then it suddenly started broadcasting the SSID. I could also safely switch back auto mode after this. I have no idea what was causing this, it seems to be so random, but I'm glad I finally got it working.
(Edited)