May 01, 2008
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Revision Date Comment 1.0 01-MAY-2008 Initial Public Release
Products Affected Comments AIR-LAP1520 Series - 220.127.116.11M Software for the AP is bundled along with the controller image
Cisco 1520 series Wireless Access Point may remain in reset state and stop responding during startup following a soft reset.
Beginning in software release 18.104.22.168M a software problem was introduced that can cause Cisco 1520 series Access Points (AIR-LAP1522, AIR-LAP1524) to remain in a reset state and stop responding to wireless registration requests. A software fix is now available to prevent this problem.
The Cisco Wireless Access Point remains in reset state and stops responding to all controller commands, console requests, and wireless traffic. An AVR 2 interface error may also be reported. The following example describes the sequence of events and symptoms observed:
1. A wireless access point, running the affected software image, encounters the problem and enters the failure conditions without any noticeable symptoms.
2. The wireless controller downloads a new software image to the access point.
3. The wireless controller soft resets the access point after the new image is successfully downloaded.
4. The access point resets and begins startup but remains in reset state and stops responding
There is no workaround. The Access Point must be power-cycled to recover.
Cisco has introduced a software fix for this problem beginning in Cisco 4400 series Wireless Mesh software release version 22.214.171.124M. Cisco recommends all affected wireless access points be upgraded to version 126.96.36.199M or later to avoid this problem.
To follow the bug ID link below and see detailed bug information, you must be a registered customer and you must be logged in.
DDTS Description CSCso45207 (registered customers only) 1520 series AP hung after being idle for days
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