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Cisco Catalyst 2900 Series Switches

Field Notice: FN - 63744 - Cat2K Might Fail to Boot After a Power Cycle - Fix on Failure

Field Notice: FN - 63744 - Cat2K Might Fail to Boot After a Power Cycle - Fix on Failure

Revised October 06, 2014
March 3, 2014


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
1.3
06-OCT-2014
Updated the Workaround/Solution Section
1.2
11-APR-2014
Updated the Workaround/Solution Section
1.1
24-MAR-2014
Updated the Products Affected Section
1.0
03-MAR-2014
Initial Public Release

Products Affected

Products Affected
WS-C2350-48TD-S
WS-C2350-48TD-SD
WS-C2918-24TC-C 
WS-C2918-24TT-C
WS-C2918-48TC-C
WS-C2918-48TT-C
WS-C2960-24-S
WS-C2960-24LC-S
WS-C2960-24LT-L
WS-C2960-24PC-L
WS-C2960-24PC-S
WS-C2960-24TC-L
WS-C2960-24TC-S
WS-C2960-24TT-L
WS-C2960-48PST-L
WS-C2960-48PST-S
WS-C2960-48TC-L
WS-C2960-48TC-S
WS-C2960-48TT-L
WS-C2960-48TT-S
WS-C2960-8TC-L
WS-C2960-8TC-S
WS-C2960G-24TC-L
WS-C2960G-48TC-L
WS-C2960G-8TC-L
WS-C2975GS-48PS-L
WS-C2960PD-8TT-L

Problem Description

The Cisco Catalyst 2000 Series (CAT2K) switches (listed in the Products Affected section) might fail to boot up after the unit experiences a power cycle operation.

Background

Cisco has been working with some customers on an issue related to memory components manufactured by a single supplier between 2005 and 2010. These memory components are widely used across the industry and are included in a number of Cisco products. 

Although the majority of Cisco products using these components are experiencing field failure rates below expected levels, some components may fail earlier than anticipated. A handful of our customers have recently experienced a higher number of failures, leading us to change our approach to managing this issue. 

While other vendors have chosen to address this issue in different ways, Cisco believes its approach is the best course of action for its customers. Despite the cost, we are demonstrating that we always make customer satisfaction a top priority. Customers can learn more about this topic at Memory Component Issue web page.

PLEASE NOTE - The products listed in this Field Notice have lower than expected failure rates. This assessment is based on actual usage of affected memory components, observed field failure rates and product replacements since 2012. 

A degraded component will not affect the ongoing operation of a device, but will be exposed by a subsequent power cycle event. This event will result in a hard failure of the device, which cannot be recovered by a reboot or additional power cycle. For these reasons, additional caution is recommended for operational activities requiring the simultaneous power cycling of multiple devices. This issue has been observed most commonly on devices that have been in service for 24 months or more.

Problem Symptoms

If the affected hardware (listed in the Products Affected section) has been in continuous operation for approximately 24 months, then the hardware might fail to boot up due to memory failure during a power cycle event.

This occurs when power is removed and reapplied to the switch (the switch is power cycled).

Note: This issue does not affect switches while they are in operation. The switch failure might occur after the switch is power cycled.

The failure symptom is observed when the switch fails to boot up with no console response (no characters are written to the console).

Workaround/Solution

Fix on Failure Replacement Guidelines: Request RMA product through normal service support channels.

Please refer to this table for the appropriate Product ID replacement:

PID
Action
PID Replacement
Quantity
WS-C2350-48TD-S
Replace Unit
WS-C4948E, PWR-C49E-300AC-R
1 Each
WS-C2350-48TD-SD
Replace Unit
WS-C4948E, PWR-C49-300DC
1 Each
WS-C2918-24TC-C
Replace Unit
WS-C2918-24TC-C
1
WS-C2918-24TT-C
Replace Unit
WS-C2918-24TT-C
1
WS-C2918-48TC-C
Replace Unit
WS-C2918-48TC-C
1
WS-C2918-48TT-C
Replace Unit
WS-C2918-48TT-C
1
WS-C2960-24LC-S
Replace Unit
WS-C2960+24LC-S
1
WS-C2960-24LT-L
Replace Unit
WS-C2960+24LC-L
1
WS-C2960-24PC-L
Replace Unit
WS-C2960+24PC-L
1
WS-C2960-24PC-S
Replace Unit
WS-C2960+24PC-S
1
WS-C2960-24-S
Replace Unit
WS-C2960+24TC-S
1
WS-C2960-24TC-L
Replace Unit
WS-C2960+24TC-L
1
WS-C2960-24TC-S
Replace Unit
WS-C2960+24TC-S
1
WS-C2960-24TT-L
Replace Unit
WS-C2960+24TC-L
1
WS-C2960-48PST-L
Replace Unit
WS-C2960+48PST-L
1
WS-C2960-48PST-S
Replace Unit
WS-C2960+48PST-S
1
WS-C2960-48TC-L
Replace Unit
WS-C2960+48TC-L
1
WS-C2960-48TC-S
Replace Unit
WS-C2960+48TC-S
1
WS-C2960-48TT-L
Replace Unit
WS-C2960+48TC-L
1
WS-C2960-48TT-S
Replace Unit
WS-C2960+48TC-S
1
WS-C2960-8TC-L
Replace Unit
WS-C2960C-8TC-L
1
WS-C2960-8TC-S
Replace Unit
WS-C2960C-8TC-S
1
WS-C2960G-24TC-L
Replace Unit
WS-C2960X-24TS-L
1
WS-C2960G-48TC-L
Replace Unit
WS-C2960X-48TS-L
1
WS-C2960G-8TC-L
Replace Unit
WS-C2960CG-8TC-L
1
WS-C2975GS-48PS-L  
Replace Unit
WS-C2975GS-48PS-L  
1
WS-C2960PD-8TT-L  
Replace Unit
WS-C2960CPD-8TT-L  
1

How To Identify Hardware Levels

Enter the show inventory command in order to obtain the Product ID (PID). If the CLI is not available, physically inspect in order to locate the PID.

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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