Controller Based WLANs

Throughput performance issue with Intel 7260/7265 NIC Cards

by ‎10-18-2016 04:40 PM - edited ‎10-19-2016 11:39 AM
Q:

Throughput issues when UAPSD Enabled



A:

Overview

========

Wireless station with Intel 726x adapters may experience reduced throughput when connected to Aruba Access Points.

 

Affected Access Points

=======================

-- 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

========================

All ArubaOS

 

Details and Tests:

==============

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

=============

http://www.intel.com/content/www/us/en/support/network-and-i-o/wireless-networking/000005615.html

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