Wireless Access

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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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Legacy devices unable to connect

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  • 1.  Legacy devices unable to connect

    Posted May 15, 2018 11:27 PM

    Hi All,

    In one of our environments we have old devices with fixed IP that need to connect in 802.11b and 802.11g network.
    We replaced an old ubquiti wifi solution with new IAPs 207 access points.

    But we are facing problems, the old devices associate the wifi network, but do not communicate. The device stay with IP 0.0.0.0 . It seems the AP does not know who it is.

    Please see the pictures attached.

     

    Do you have any idea what can cause it?

    Thank you



  • 2.  RE: Legacy devices unable to connect

    Posted May 15, 2018 11:29 PM

    Hi Ed,

     

    Please share the "show tech" output from the IAP on which the issue is seen.

     

    What kind of devices are these ? (laptops/scanners etc)



  • 3.  RE: Legacy devices unable to connect

    Posted May 15, 2018 11:38 PM

    Hi Nitesh.

    The devices are weight balance.

    I just leave the office. Tomorrow I'll share the show tech output.

    Thank you,



  • 4.  RE: Legacy devices unable to connect

    Posted May 16, 2018 01:56 AM
    When you created the new SSIDs, have you checked the option "froce DHCP"? With this option enabled, only those devices that got the IP address via DHCP can connect to the network. Please check this, and disable it (if enabled) HTH


  • 5.  RE: Legacy devices unable to connect

    Posted May 16, 2018 04:35 AM

    What type of SSID is this? From the logs, it appears to be WPA2-PSK.

     

    If it is, what type of WPA/WPA2 do these devices support? Could it be that these don't support WPA2, or don't support AES encryption? When I see B-only devices, it is many times that also encryption is an issue.

     

    Default setting for Aruba Instant is WPA2 only in the Security screen for the SSID:

    Screen Shot 2018-05-16 at 10.31.23 AM.png

    You may try to set it to Both if it isn't yet, to see if that works better.



  • 6.  RE: Legacy devices unable to connect

    Posted May 16, 2018 07:41 AM
      |   view attached

    The Enforce DHCP option is disabled.

     

    The device and network are configured as WPA-TKIP.

     

    Attached is the show tech support output.

    Attachment(s)

    txt
    ShowTech.txt   286K 1 version


  • 7.  RE: Legacy devices unable to connect

    Posted May 16, 2018 07:41 AM

    The Enforce DHCP option is disabled.

     

    The device and network are configured as WPA-TKIP.

     

    Attached is the show tech support output.

    Attachment(s)

    txt
    ShowTech.txt   286K 1 version
    txt
    ShowTech.txt   286K 1 version


  • 8.  RE: Legacy devices unable to connect

    Posted May 16, 2018 09:38 PM

    Hi Ed,

     

    Is it possible to disable broadcast filtering on the SSID & check?

     

    Do these devices need 802.11d/h to be enabled by any chance ?



  • 9.  RE: Legacy devices unable to connect
    Best Answer

    Posted May 17, 2018 07:18 AM

    Thank you all.

    The Broadcast Filter: ARP was disabled and the devices worked.


    Ed Carlos