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Cisco Catalyst 3560 Series Switches

Field Notice: FN - 63476 - Certain Catalyst 3560G and 3750G Switches Do Not Support Some Older IOS Versions

Field Notice: FN - 63476 - Certain Catalyst 3560G and 3750G Switches Do Not Support Some Older IOS Versions

December 13, 2011


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
1.0
12-DEC-2011
Initial Public Release

Products Affected

Products Affected
WS-C3560G-24PS-E
WS-C3560G-24PS-S
WS-C3560G-24TS-E
WS-C3560G-24TS-S
WS-C3560G-48PS-E
WS-C3560G-48PS-S
WS-C3560G-48TS-E
WS-C3560G-48TS-S
WS-C3750G-24PS-E
WS-C3750G-24PS-S
WS-C3750G-24PS-S-1
WS-C3750G-24TS-E1U
WS-C3750G-24TS-S1U
WS-C3750G-48PS-E
WS-C3750G-48PS-S
WS-C3750G-48TS-E
WS-C3750G-48TS-S

Problem Description

Due to hardware changes in the flash component of the Cisco Catalyst 3560G and 3750G switches, some older IOS versions are not supported on the affected hardware.

Background

Due to supply constraints, Cisco was required to migrate to new flash components on its Catalyst 3560G and 3750G switches. The switches, with the new flash, are compatible back to the 12.2(35)SE IOS release.

Problem Symptoms

The affected Catalyst 3560G and 3750G switches are unable to use IOS versions prior to the 12.2(35)SE release. If an IOS version prior to 12.2(35)SE is used on an affected 3560G or 3750G switch, the following error messages will be displayed during the boot process: 

intel_28f256j3_16x_write_bytes: command sequence error 
flashfs[1]: writing to flash handle 0x254D8A0, device 0, offset 0x1600000, length 0x208: Operation Failed 
flashfs[1]: sector ptr: {0xB0, 0xE7} 
flash:/c3750_ucode_image.tar: No space left on device
 

In addition to displaying the above error messages, when the boot process is complete, the switch will appear to be running properly. However, the flash will be inaccessible and, therefore, the switch will not be operational (see the following two sample outputs below). 

3560#dir 
Directory of flash:/ 
%Error opening flash:/ (Device or resource busy) 
32514048 bytes total (16258560 bytes free)
 

-OR- 

3560#wr mem 
Building configuration... 
nv_done: unable to open "flash:/config.text.new" 
nv_done: unable to open "flash:/private-config.text.new" 
nv_done: unable to open "flash:/multiple-fs.new"[OK]

Workaround/Solution

Any Catalyst 3560G or 3750G switches within the Affected Serial Number Range provided in the table below are affected. For the affected 3560G and 3750G switches, IOS versions prior to 12.2(35)SE cannot be used. The recommendation is to upgrade to 12.2(55)SE4 and above. 

Affected PIDs Affected Serial Number Range
WS-C3560G-24PS-E

FOC1536X198 and above

WS-C3560G-24PS-S

FOC1528372B to FOC15283737
FOC1539V3RD and above

WS-C3560G-24TS-E

FOC1539Z2PH and above

WS-C3560G-24TS-S

FOC152816W3 to FOC152816X1
FOC1534X4NW and above

WS-C3560G-48PS-E

FOC1537X3AD and above

WS-C3560G-48PS-S

FOC1528370C to FOC1528371E
FOC1537X3ML and above

WS-C3560G-48TS-E

FOC1537V1C4 and above

WS-C3560G-48TS-S

FOC152816XF to FOC152816YA
FOC1536X1ZR and above

WS-C3750G-24PS-E

FOC1545Z19A and above

WS-C3750G-24PS-S

FOC1531Y3TV to FOC1534Y3FU
FOC1545X1N8 and above

WS-C3750G-24PS-S-1

FOC1545X1N8 and above

WS-C3750G-24TS-E1U

FOC1542Y25R and above

WS-C3750G-24TS-S1U

FOC1530Y03Y to FOC1534Y3FZ
FOC1542V3HF and above

WS-C3750G-48PS-E

FOC1542Y33J and above

WS-C3750G-48PS-S

FOC1532Y316 to FOC1532Y31G
FOC1541V35G and above

WS-C3750G-48TS-E

FOC1542X1KD and above

WS-C3750G-48TS-S

FOC1534Y24E to FOC1534Y24G
FOC1541V412 and above



If a non-supported IOS software image is installed on an affected Catalyst 3560G or 3750G switch, then please follow the " Recovering from a Software Failure" guidelines in the  Catalyst 3560 Software Configuration Guide or  Catalyst 3750 Software Configuration Guide on Cisco.com. Once a supported version of IOS is re-installed on the switch, it will operate normally.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered customer and you must be logged in.

DDTS Description
CSCtv22044 (registered customers only) Some 3560G/3750G do not support old versions of IOS.

How To Identify Hardware Levels

There are two methods to obtain the serial number of a Catalyst 3560G and 3750G switch. 

1) Use the show version command.

3560-G#show version | include System serial
System serial number : FOC1048Y5N6
2) Physical inspection of the device. The serial number label is near the console port (see the label circled in red in the image below).

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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