C20, C25, C4110, C5110, C5210, V2110; firmware 8.11.06.0006, 8.11.07.0007, 8.21.01.0198
Enterasys (formerly HiPath) Wireless Controller
Apple iOS clients (e.g. iPhone, iPad, iTouch) occasionally drop their wireless connection and/or association from the wireless system.
Apple devices losing connection to Apple AirPlay.
iDevices reporting choppy video.
A related release notes item, in the 'DEPLOYMENT NOTES AND KNOWN ISSUES' section, states:wns0008309
Under certain low signal conditions or areas of high data traffic,
iPad's running IOS 5.1.1 or later could disconnect from the network
randomly. This issue seems to be device and OS specific. Enterasys will
continue investigating this problem to identify the root cause and
propose potential solutions. The issue has not been replicated on other
OSes or platforms at this time.[/code]Solution
Upgrade the controller to the next firmware release (8.11.08.0002 or 8.21.02.0063), or higher.
Release notes state, in the 'Changes in 8.11.08.0002' section:
Corrects issue with ipad2 using iOS v6.0.1 getting deauthed from ap running v8.11.07.0007
Release notes state, in the 'Changes in 8.21.02.0063' section:
Corrects issue with ipad2 using iOS v6.0.1 getting deauthed from ap running v8.11.06.0013