Cisco Catalyst 2900 XL Series Switches

Updated April 17, 2002

September 28, 2000

Products Affected

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.

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

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:

• Open a service request on Cisco.com
• By email
• By telephone

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