Wireless Access

last person joined: yesterday 

Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.
Back to discussions
Expand all | Collapse all

Randomly IOS device loose connectivity with network

This thread has been viewed 4 times

  • 1.  Randomly IOS device loose connectivity with network

    Posted Jun 07, 2017 06:09 AM

    Hi We have wired issues randomly wireless users specifically Mobiles (IPhone mostly) says user is connected to wireless but no connectivity network.

     

    user-table shows the user entry but not able to ping any where. User disconnect and re-connects everything works.

     

    other users connected to the AP has no issues at the same time.

     

    I see the below log at the time of  issue in user-debug of the device

    1) after successful authentication as the client roamed to different AP

     

    Jun 7 11:12:09 :522137: <DBUG> |authmgr| Sibyte-xx:xx:xx:xx:xx:22/xx.xx.xx.26 : No match for User-Agent: CommCenter/4995.1 CFNetwork/811.5.4 Darwin/16.6.0.

     

    Not sure if "No Match for User-Agent"  has any importance of the log.

     

    Any other suggestion what look for the issue.

     



  • 2.  RE: Randomly IOS device loose connectivity with network

    EMPLOYEE
    Posted Jun 07, 2017 06:26 AM

    The user agent is not at fault here.

     

    Are you dropping broadcasts at the Virtual AP or have Broadcast Filter ARP enabled in the IAP?  Some devices lose connection when they are starved for bandwidth and dropping broadcasts could help with that significantly.



  • 3.  RE: Randomly IOS device loose connectivity with network

    Posted Jun 07, 2017 06:49 AM
    Yes I do drop broadcast in VAP and enabled bc-mc optimization on the vlan


  • 4.  RE: Randomly IOS device loose connectivity with network

    EMPLOYEE
    Posted Jun 07, 2017 07:14 AM
    You have not given much information to understand what could be going on. Is this the only device with problems? How often does the issue happen?


  • 5.  RE: Randomly IOS device loose connectivity with network

    Posted Jun 07, 2017 08:18 PM

    With regards to Device we hear mobile devices are effected but we are monitoring couple IPhones placing them in user-debug.

     

    from the logs the issue is happened after the client raom from one AP to another AP (client-trail-info)

     

    management frames of the AP associated shows AP has successfully sent association response nothing after that.

     

    And the user-debug the log shows after successful authentication 11:06:44 around 11:12

     

    Sibyte-6XX:XX:XX:XX:22/XX.XX.XX.26 : No match for User-Agent: CommCenter/4995.1 CFNetwork/811.5.4 Darwin/16.6.0.
    Jun 7 11:12:09 :522301: <DBUG> |authmgr| Auth GSM : USER publish for uuid 0x4ddb6600a8a80930 mac xx:xx:xx:xx:xx:22 name xxxxxx role xxxx_XXXX devtype iPhone wired 0 authtype 4 subtype 9 encrypt-type 10 conn-port 8448 fwd-mode.

     

    Sorry logs cannot be posted as per restrictions



  • 6.  RE: Randomly IOS device loose connectivity with network

    Posted Jun 07, 2017 08:53 PM

    Sorry missed out information that SSID is in mixed mode TKIP and AES.



  • 7.  RE: Randomly IOS device loose connectivity with network

    EMPLOYEE
    Posted Jun 08, 2017 08:50 AM

    You should have only a single encryption type to avoid issues.

     

    Please see the link here:  http://community.arubanetworks.com/t5/Technology-Blog/Removing-the-Bottleneck-in-Wireless/ba-p/77978  for more suggestions.