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Cisco 2000 Series Wireless LAN Controllers

Field Notice: FN - 62555 - Clear Configuration Boot Menu Option 5 on Cisco Wireless LAN Controller 2006 Corrupts Image


Revised February 9, 2007

October 6, 2006

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.


Products Affected

Product

AIR-WLC2006-K9

Problem Description

Customers should not choose the clear config (option 5) from the boot menu on controllers running 3.2.78.0, 3.2.116.21, 3.2.150.6 or 3.2.150.10, 3.2.171.5 or 3.2.171.6, 4.0.155.5 or 4.0.179.8 and 4.0.179.11.

Background

Due to bug CSCsg18356 in clear config code, the eeprom.dat file does not get backed up and is deleted during clear config. This is the file which holds serial number, Mac Address and other manufacture information related to the box. Without this file, the WLC2006 controller cannot bootup and the unit has to be RMA'd.

Problem Symptoms

The image becomes corrupted when clearing config (option 5 at boot menu) on a WLC2006 running 3.2.78.0, 3.2.116.21, 3.2.150.6 or 3.2.150.10, 3.2.171.5 or 3.2.171.6, 4.0.155.5 or 4.0.179.8 and 4.0.179.11.

Workaround/Solution

To solve this problem, load the file AIR-WLC2006-K9-4-0-206-0_ER.aes on a 2006 controller prior to clearing the configuration.

All units in the field should be upgraded with this file to prevent accidental damage due to this issue.

This file is loaded like any other maintenance image. The upgrades that the file makes are to EEPROM contents, not the operating system image, so the software version as reported in the GUI under Monitor | Summary | Software Version or in the CLI output of SHOW SYSINFO will not be changed.

The file can be downloaded from Software Download page.

Please see the three additional options below to reset config to factory default.

  1. Reset the config to factory default from the GUI:

    Go to the Commands page, select Reset to Factory Default, and click on the Reset button.

    fn62555_j6myzg.jpg

  2. Reset the config from the CLI after system boot up and login:

    Issue the clear config command from the controller prompt and issue a reset system command without saving the current config as follows:

    (Cisco Controller) >clear config 
    Are you sure you want to clear the configuration? (y/n) y 
    
    Configuration Cleared! 
    (Cisco Controller) > 
    (Cisco Controller) > 
    (Cisco Controller) > 
    (Cisco Controller) >reset system 
    
    The system has unsaved changes. 
    Would you like to save them now? (y/N) n 
    
    
    Configuration Not Saved! 
    Are you sure you would like to reset the system? (y/N) y 
    
    
    System will now restart! 
    
  3. Reset the config from the console after system boot up.

    Issue the Recover-Config command from the User name prompt. This is useful for password recovery.

    Starting IDS Signature Manager: ok 
    Starting RFID Tag Tracking: ok 
    Starting Management Services: 
    Web Server: ok 
    CLI: ok 
    Secure Web: ok 
    
    (Cisco Controller) 
    
    Enter User Name (or 'Recover-Config' this one-time only to reset configuration to factory defaults) 
    
    User: Recover-Config Initiating system recovery process... please wait 
    
    Rebooting system 
    

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS

Description

CSCsg18356 (registered customers only)

Clear configuration on WLC2006 corrupts image

Revision History

Revision

Date

Comment

1.2

09-FEB-2007

Updated the Workaround/Solution section.

1.1

09-JAN-2007

Added versions 3.2.78.0, 3.2.116.21, 3.2.171.6, 4.0.179.11 to Problem Symptom section. Added versions 3.2.171.6 and 4.0.179.11 to Problem Description section.

1.0

06-OCT-2006

Initial Public Release

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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