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Cisco Catalyst 3750 Series Switches

FN - 62570 - WS-C3750G-48TS-E, WS-C3750G-48TS-S Printed Circuit Assembly Defect - Hardware Replacement Required


Revised March 11, 2008
March 15, 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.

Revision History

 
Revision Date Comment
1.1 11-MAR-2008 Removed Upgrade Form - Removed Upgrade reference and added "Fix on Failure (RMA the switch). Use the standard RMA process to order replacement." to the Workaround/Solution section.
1.0 15-MAR-2007 Initial Public Release

Products Affected

Products Affected Comments
WS-C3750G-48TS-E The list of affected system serial number can be found in section Affected System Serial Numbers of this field notice.
WS-C3750G-48TS-S The list of affected system serial number can be found in section Affected System Serial Numbers of this field notice.

Problem Description

"Barrel Cracking" in the via holes of the Printed Circuit Assembly (PCA) of WS-C3750G-48TS-E and WS-C3750G-48TS-S could potentially threaten the reliability, or shorten the life of the affected switches.

Background

A via hole is a plated hole on the PCA that is not used to attach components, but serves as inter-layer connections.

"Barrel cracking" describes the situation when the plating inside a via hole is cracked. Barrel cracking, whether partial or complete, results in different layers of the PCA not properly connected to each other, and hence the reliability of an affected switch is compromised.

Only those switches with matching switch system serial numbers are affected by this issue. For the list of affected switches, please follow the link in the Affected System Serial Numbers section.

Problem Symptoms

There is no unique, signature symptom for this defect. Rather, the failed symptoms associated with via-hole defect are numerous.

Examples of failed symptoms in this case include, but not limited to, loss of traffic, Power-On Self Test (POST) failure when booting up, systems not booting up at all, or certain ports not working properly.

Workaround/Solution

Fix on Failure (RMA the switch). Use the standard RMA process to order replacement.

Affected System Serial Numbers

The list of affected System Serial Numbers can be found by following this link.

How to Identify System Serial Number

The switch system serial number can be found on:

  • The packout box.
  • A label on the back of the switch.
  • Using the show version command. If the switch is already installed in a network, telnet to the switch, or connect directly to the switch console, then type the show version command and reference the switch System serial number.

Below is an example of the output of the show version command from an affected switch:

Switch#show version
Cisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(25)SEE2, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Fri 28-Jul-06 08:46 by yenanh
Image text-base: 0x00003000, data-base: 0x00EE3E54

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)

Switch uptime is 3 minutes
System returned to ROM by power-on
System image file is
" flash:c3750-ipbase-mz.122-25.SEE2/c3750-ipbase-mz.122-25.SEE2.bin"

cisco WS-C3750G-48TS (PowerPC405) processor (revision D0) with 118784K/12280K bytes of memory.
Processor board ID FOC1043Y3QJ
Last reset from power-on
1 Virtual Ethernet interface
52 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:19:E8:6E:61:00
Motherboard assembly number : 73-10218-08
Power supply part number : 341-0107-01
Motherboard serial number : FOC1043331D
Power supply serial number : AZS102707YW
Model revision number : D0
Motherboard revision number : B0
Model number : WS-C3750G-48TS-S
System serial number : FOC1043Y3QJ
---> System Serial Number on the affected list.
Top Assembly Part Number : 800-26857-01

Top Assembly Revision Number : A0
Version ID : V03
CLEI Code Number : CNMWU00ARC
Hardware Board Revision Number : 0x09

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C3750G-48TS 12.2(25)SEE2 C3750-IPBASE-M

Configuration register is 0xF

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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