Apple MacBook Pro dropping wireless connection

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Jul 26, 2012 4:17 AM
Jul 26th, 2012


Introduction

Apple MacBook Pro dropping wireless connection

Scenario 1

MAC clients (MacBook pro & MacBook Air running Lion OSX) are having hard time staying connected on wireless network with 1142 & 3502 Access Points & WLC running 7.0.98.0 with WPA2 Enterprise for authentication via ACS 5.x. However, Windows clients are not experiencing this issue.

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1. Solution

Disable  “Client Load Balancing” feature on the SSID configuration. This would solve the above issue for Mac clients as well as few HP & Dell clients.  This feature tries to reject the client and have the client try to associate to another AP.  In high density environments (with 10+ clients), this feature might cause issues with various devices.

Scenario 2

MAC Wireless clients (MacBook pro & MacBook Air running Lion OSX) take a long time (several minutes, roughly 5 minutes) to obtain an IP Address when they first connect in the day.

1. Solution

Try to disable “Client Band Select” feature to see if that helps clients associate better. Depending on the client device, the client still decides what band it wants to use. This feature tries to 'force' devices to associate on the 5 Ghz, but few clients may not connect on the 5 Ghz and prefers the 2.4 Ghz and at times client devices may not get associated because of this feature.

Check if the clients running Intel driver 14.x which has a bug that is resolved in 15.x, try to upgrade  client machines to 15.x

As a best practice, enable HReap groups feature.

Reference

Intermittent dropouts Intel Centrino Advanced-N 6205

MacBook Pro constantly losing wireless connectivity

802.1x authentication on Macbooks running Lion

This document was generated from the following discussion: Apple MacBook Pro dropping wireless connection

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Comments

GNOC-Caraustar Sun, 02/03/2013 - 19:00

Hi All,

We are facing same issue with Apple users. Suddenly users drop from the network and only way to reconnect back is to restart the user machine. When user drops the SSID singal strength is full.

The option "Client Load Balancing" is already unchecked.

Could you please help/suggest with some solution.

Our product detail:

WS-SVC-WISM-1-K9

S/W Code : 7.0.98.0

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