Q: Throughput issues when UAPSD Enabled
A: Overview
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Wireless station with Intel 726x adapters may experience reduced throughput when connected to Aruba Access Points.
Affected Access Points
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-- AP-92/93
-- AP-100 series
-- AP-13x series
-- AP-175
-- RAP-3 series
-- RAP-100 series
-- RAP-155 series
All other Aruba Access Points are not affected
Affected Aruba Controller OS
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All ArubaOS
Details and Tests:
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OS: Windows 7
NIC Card: Intel 726x adapters
Aruba Controller version: 6.4.4.9
Topology: Standalone Master
AP Model: 135/105
Forward mode: Tunnel
When one Station with UAPSD Enabled associate to AP, average throughput found was 30mbps/sec [verified from iPerf tests]
When one Station with UAPSD Disabled associate to AP 135/105, average expected throughput was 100 mbps/sec
Solution
========
Due to the hardware design of these Aruba products the workaround is to disable WMM U-APSD on the SSID profile or disabling U-APSD from Station.
Please refer the below screenshots which explains how to disable UAPSD from SSID profile and also from Station.
Screenshots:
==========
From Controller CLI:
From Controller GUI:
From Aruba Instant CLI:
From Station:
Abbreviations:
============
WMM: Wi-Fi Multimedia
UAPSD: Unscheduled Automatic Power Save Delivery
Further Reading
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http://www.intel.com/content/www/us/en/support/network-and-i-o/wireless-networking/000005615.html