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Cisco Aironet 1520 Series

Field Notice: FN - 63119 - Cisco 4400 Wireless MESH Software - Access Point May Stop Responding

Cisco - Field Notice: FN - 63119 - Cisco 4400 Wireless MESH Software - Access Point May Stop Responding

May 01, 2008


NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision Date Comment
1.0
01-MAY-2008
Initial Public Release

Products Affected

Products Affected Comments
AIR-LAP1520 Series - 4.1.191.17M
Software for the AP is bundled along with the controller image

Problem Description

Cisco 1520 series Wireless Access Point may remain in reset state and stop responding during startup following a soft reset.

Background

Beginning in software release 4.1.192.17M 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.

Problem Symptoms

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

Workaround/Solution

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 4.1.192.17M. Cisco recommends all affected wireless access points be upgraded to version 4.1.192.22M or later to avoid this problem.

DDTS

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

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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