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Cisco Services Modules

Field Notice: FN - 62775 - Cisco Wireless Services Module (WiSM) WS-SVC-WISM-1-K9 - Controller Firmware Storage Space - Compact Flash Has a Data Retention Problem


March 29, 2007

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

WS-C6504-E-WISM

WS-C6509-E-WISM

WS-SVC-WISM-1-K9

Problem Description

The compact flash (CF) contained on controllers in a WISM (WS-SVC-WISM-1-K9) module may contain a defect preventing access to the compact flash during boot and may cause a boot failure following a power cycle or reload.

During a failed state, the controllers will be unable to boot into service. Cisco is providing a compact flash replacement kit.

Background

The compact flash modules were installed in WISM controllers manufactured until November 2006.

This issue has been linked to a compact flash vendor manufacturing process. The root cause was identified and appropriate steps taken to resolve the issue.

Problem Symptoms

This issue is typically seen during a system reload or cold start. Under normal circumstances a controller's compact flash could contain Cisco IOS software, configurations or other files necessary for system boot or operation. These files are accessed by the controller during the boot sequence to reach an operating state.

When the controller experiences this failure, the controller is unable to access the contents of the compact flash.

This failure occurs internally on the compact flash. Data stored on the compact flash should be intact but may not be accessible.

Workaround/Solution

The compact flash should be replaced through the normal TAC RMA process as a "HW Manufacturing New, 3 day business" RMA.

Cisco has released a compact flash upgrade kit (WS-CFUPGKIT-WISM=), software pre-loaded version on flash, 3.2.171.6, that resolves the scenario described in the Problem Symptom section of this field notice.

The following instructions are divided into 4 sections:

1. How to identify and validate product for this field notice

2. Recommendation before replacing the compact flash

3. Instructions on how to replace the compact flash

4. Recovering image version and configuration

Note: Download and open the following link to your laptop if all connectivity to www.cisco.com will be interrupted during this procedure.

This link provides you with instructions on saving configurations and restoring configurations and upgrading the controller. Deploying Cisco 440X Series Wireless LAN Controllers

How to identify and validate product for this field notice:

  1. Confirm Serial Number Range:

    The WISM controller has a serial number (mfg date) of equal or earlier than SAD1042XXXX (SADYYWWXXXX, 10 for YY is 2006, WW is build week, and XXXX is an alpha numeric counter).

  2. Confirm Cisco Part Number of Compact Flash

    Note: This procedure on affected controllers could trigger the symptom and prevent the controller from going into operation after inspection.

    Follow the Recommendation before Replacing Your Compact Flash section before continuing with this procedure.

    Power down and remove the WiSM module from the catalyst 6500 chassis (see the special note below).

    Remove the compact flash from the controller and verify that the Cisco part number of compact flash is 17-8039-04.

  3. Confirm Make and Date Code of Compact Flash

Inspect that the Compact Flash Prefix (A) begins with "CCF:, and Manufacturing Production Code (B) is equal to or less than "060727".

Manufacturing Code Locations

Location A - Manufacturing Part Number Prefix

Location B - Manufacturing Production Code

fn62775_jcsse7.gif

Recommendation before replacing the Compact Flash

  1. Verify the current software code version on the WISM from the Monitor web page or CLI. From the command line (via the console or SSH)

    (Hostname) >show sysinfo 
    
    Manufacturer's Name.............................. 
    Product Name..................................... 
    Information................................ 
    Version..................................... 3.2.171.6 
    
    
    
  2. Cisco recommends that you backup both configurations on the two (2) controllers to an external TFTP server before replacing their compact flash.

    The Backup and Restore operations for a Controller's configurations can be performed from either from the controller itself or from WCS.

    See Figure 92.

    These WLC Controller Configuration Backup and Restore instructions cover backing up the configuration from the controller itself or by using the WCS.

    Note: Always verify that the configuration backup file is on the external device.

  3. If the controller is currently running a version of 4.0 code, ensure that a copy of the software is available for download to the controller after replacing the compact flash.

    Instructions on how to replace the compact flash

    Follow these steps to replace a compact flash card in your WiSM module:

    Step 1: Power off the WiSM unit from the command prompt on the Supervisor 720. Enter this command to power off the unit:

    no powers enable module mod

    Note: Shutdown might require several minutes.

    Step 2: The Status LEDs should be off and not orange if the power is off.

    Step 3: Remove the WiSM from the Catalyst 6500 chassis.

    Step 4: Use the Torx wrench provided with the Upgrade Kit provided from Cisco to remove the screw that secures the compact flash covers on the front of the unit. See Figure 1 below.

fn62775_jc39wu.gif

Step 5: Remove the compact flash cover. Be careful not to let the EMI shielding slip off the cover.

Step 6: Using your thumb and forefinger, pull the compact flash card out of the slot.

Step 7: With the Cisco logo label side facing upwards, insert the new compact flash.

Step 8: Replace the screw and secure the cover.

Step 9: Re-insert the WiSM back to the catalyst 6500 chassis and attach a console cable to the first WLC.

Recovering Image Version and Configuration

This section is divided into two parts:

Version 3.2 recovery procedures and Version 4.0 recovery procedures.

Please see the appropriate instructions.

If the WiSM was running a version of 3.2 code, such as 3.2.171.6 in the example above:

Step 1: Proceed through the setup script and configure the operational parameters for the controller. The controller will reboot at the end of the setup script.

Step 2: After the WLC reboots, restore the configuration back to the WLC using the instructions in the following link. WLC Controller Configuration Backup and Restore

Step 3: Cisco recommends that you save the configuration and reboot.

If the WISM blade is operating version 4.x code (such as 4.0.179.11)

Step 1: Proceed through the setup script and configure the operational parameters for the controller except enter a non-routable AP manager ip address, such as 2.2.2.2. This will prevent the APs from joining the controller and downloading the 3.2 version of code. The controller will reboot at the end of the setup script.

Step 2: After the WLC reboots, upgrade the WLC to version 4.0 software following the instructions in the Upgrading WLC Software link.

Step 3: Reboot the WLC; so that the WLC loads the version 4.0 software.

Step 4: After the WLC reboots, restore the configuration back to the WLC using the instructions in the following link - WLC Controller Configuration Backup and Restore.

Step 5: Cisco recommends that you save the configuration and reboot.

Revision History

Revision

Date

Comment

1.0

29-MAR-2007

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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