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Cisco Bug: CSCuj40542 - AP does not hear valid Block Ack frame and repeats sending AMPDU frame

Last Modified

Mar 05, 2014

Products (1)

  • Cisco Aironet 3700 Series Access Points

Known Affected Releases

15.2(4)JA 7.5(102.0)

Description (partial)

AP does not hear Block Ack frames sent from some clients.
It causes severe low throughput for downstream.

Aggregation (A-MPDU) is enabled on the radio. 
It's observed under some high load (approx. 20 or more clients having multiple real time streaming on the same AP.
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