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Cisco Catalyst 2900 XL Series Switches

Field Notice: Catalyst 2912/2924 Switches with Wrong LEDs Installed


Updated April 17, 2002

September 28, 2000


Products Affected

Product

Part Number

WS-C2912-XL-EN

CATALYST 2912-XL-EN

WS-C2924C-XL-EN

CATALYST 2924C-XL-EN

WS-C2924-XL-EN

CATALYST 2924-XL-EN

Problem Description

Incorrect LEDs installed on some switches do not flash Amber to report certain port status or condition. The LEDs remain Green, regardless of port status, which may indicate an incorrect port condition.

Background

The LEDs on switches manufactured between July 2, 2000 and August 20, 2000, may not function properly due to the incorrect LED being used during manufacturing. The affected switches can be identified by their Date Code. (See How to Identify Date Code below.)

When the LEDs are functioning properly, during initial power up, the LEDs will flash Amber for a second and then flash Green. They remain Green for a few seconds, and then each Green LED will blank out one at a time as it goes sequentially from port 1 onward during POST. The LEDs on these switches do not flash Amber under any conditions.

Note:? The switches still function properly and allow connectivity, even with the incorrect LEDs. The network is still up and operational for a customer using this equipment. The LEDs however, indicate a condition that may not exist.

Problem Symptoms

The LEDs will only flash Green. The port remains Green even when port status should be represented by an Amber LED, as with power up and blocking status.

The following test can be performed to check switch LED functionality.

  1. Power up.

  2. Connect between port 1 and 2 with a cross-over cable.

  3. Confirm the port status with "show spanning-tree" command as follows

    FAB0430T2C2>en
    FAB0430T2C2#show spanning-tree
    
    Interface Fa0/1 (port 13) in Spanning tree 1 is FORWARDING
    Port path cost 19, Port priority 128
    Designated root has priority 32768, address 0002.fd23.8500
    Designated bridge has priority 32768, address 0002.fd23.8500
    Designated port is 13, path cost 0
    Timers: message age 0, forward delay 0, hold 0
    BPDU: sent 0, received 1
    
    Interface Fa0/2 (port 14) in Spanning tree 1 is BLOCKING
    Port path cost 19, Port priority 128
    Designated root has priority 32768, address 0002.fd23.8500
    Designated bridge has priority 32768, address 0002.fd23.8500
    Designated port is 13, path cost 0
    Timers: message age 0, forward delay 0, hold 0
    BPDU: sent 0, received 20
    
    The report shows:
    Interface Fa0/1 in Spanning tree 1 is FORWARDING
    Interface Fa0/2 in Spanning tree 1 is BLOCKING
    

    If the physical LED status on the switch will show a Green LED on port 1 AND a Green LED showing on port 2, the switch has incorrect LEDs. If the LEDs on the switch were functioning properly, Port 2 would show Amber, visually indicating blocking as the read out from the console port reports.

Workaround/Solution

As stated previously, the switches still function properly and allow connectivity. The network is still up and operational and correct port status is obtained via console report status.

The recommended solution is to fix on failure. Use a return materials authorization (RMA) basewd on the customer's service level. Code the RMA as FNA (Field Notice Alert)

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

CSCds27876 (registered customers only) - Manufacturing fix on August 20, 2000

Incorrect Amber LEDs mounted during assembly process

How to Identify Date Code

The Date Codes are integrated in the first 7 characters of an 11 character Serial Number. For example, given the following SN, FAB0433A275, the the Date Code would be FAB0433.

Switches with the following Date Codes may have the incorrect LEDs installed

FAB0429

FAB0430

? ?

FAB0431

FAB0432

FAB0433

FAB0434

How To Identify Hardware

The Serial Number, which contains the Date Code, can be found in three distinct places.

  1. The Product Label on the product packout box.

  2. The back of the switch, and

  3. If the switch is already up and running, it can be retrieved from the console using the following show command:

    FAB0433V2VP#
    show ver
    
    Cisco Internetwork Operating System Software
    
    IOS (tm) C2900XL Software (C2900XL-C3H2S-M), Version 12.0(5)XU, RELEASE
    SOFTWARE
    (fc1)
    
    Copyright (c) 1986-2000 by cisco Systems, Inc.
    
    Compiled Mon 03-Apr-00 16:37 by swati
    Image text-base: 0x00003000, data-base: 0x00301398
    
    ROM: Bootstrap program is C2900XL boot loader
    
    FAB0433V2VP uptime is 4 minutes
    System returned to ROM by power-on
    System image file is "flash:c2900XL-c3h2s-mz-120.5-XU.bin"
    
    
    cisco WS-C2912-XL (PowerPC403GA) processor (revision 0x11) with 8192K/1024K
    byte
    s of memory.
    Processor board ID 0x0D, with hardware revision 0x01
    Last reset from power-on
    
    Processor is running Enterprise Edition Software
    Cluster command switch capable
    Cluster member switch capable
    12 FastEthernet/IEEE 802.3 interface(s)
    
    32K bytes of flash-simulated non-volatile configuration memory.
    Base ethernet MAC Address: 00:02:FD:E5:0C:C0
    Motherboard assembly number: 73-3397-08
    Power supply part number: 34-0834-01
    Motherboard serial number: FAB0432356V
    Power supply serial number: PHI04040CNY
    Model revision number: A0
    Motherboard revision number: B0
    Model number: WS-C2912-XL-EN
    System serial number: 
    
    FAB0433V2VP
    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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