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New Ticketmaster devices, with 5GHz support, have connection problems with AP3825/3865.

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TitleNew Ticketmaster devices, with 5GHz support, have connection problems with AP3825/3865.
Symptoms
New Ticketmaster devices, the XM66 Scanner with 5GHz support, have connection problems with AP3825i/AP3825e/AP3865e.
Environment
  • ExtremeWireless Appliance C5210
  • ExtremeWireless Access Points AP3865e
  • ExtremeWireless Access Points AP3825i, AP3825e
  • XM66 Scanners
  • firmware 9.15.05.0007
  • UPDATE:  Firmware 10.41.06 through 10.41.10
Cause
Traces taken point to frequent disassociations from the Access Point, but the root cause has not been determined.

UPDATE, Feb 2019:
  • Co-channel interference with a few news agencies present during games. 
  • Ticketmaster Device drivers were older.
Resolution
UPDATE, Feb 2019:
  • If using Radio 1 for the TicketMaster devices, please do not use channel 165.
  • If an RF scan (either through an OnDemand Scan from the AP itself, or from a 3rd party RF tool) shows multiple BSSIDs on the same channel, please move to reduce the co-channel interference
    • Move the ExtremeWireless Access Point radio to another channel.
    • Work with the other vendor's Access Points to come up with a workable radio profile.
  • Other suggestions:
    • ​​​​​​​If using Probe suppression, please disable on the APs that are using the TicketMaster SSID.
    • Set the DTIM to 1 or 2.
    • Change the Guard Interval to Long.
    • Review the TicketMaster devices themselves, and ensure they are upgraded to the latest drivers.
Additional notes

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