Entire Configuration file deletion frequently automatically in Cisco WS-C2960S-24PS-L

[Ranjan Singh]

HI Team,

I am unable to resolve auto deletion of entire Configuration file in Cisco WS-C2960S-24PS-L. This is not fixed but every 10 to 15 days switch configuration vanish automatically and I need to reconfigure through Console.I have updated latest IOS c2960s-universalk9-mz.150-2a.SE9.bin but no luck

I am attached tech report to analyse this issue. Kindly help me to fix this issue permanently.. 

[Paul Chapman]

Hi Ranjan -

Please post results of a "dir" command.

PSC

[Ranjan Singh]

Hello PSC,

Please find below Output.

BIW_CL#dir
Directory of flash:/

584 -rwx 52 Jan 2 2006 16:05:09 +00:00 express_setup.debug
3 -rwx 556 Jan 2 2006 00:01:34 +00:00 vlan.dat
4 -rwx 3096 May 23 2016 09:50:30 +00:00 multiple-fs
5 -rwx 14567808 Mar 30 2011 03:01:05 +00:00 c2960s-universalk9-mz.150-2a.SE9.bin
6 -rwx 1915 May 23 2016 09:50:30 +00:00 private-config.text
7 drwx 512 Mar 30 2011 03:16:28 +00:00 c2960s-universalk9-mz.122-55.SE3
585 -rwx 2136 May 23 2016 09:50:29 +00:00 config.text

57931776 bytes total (39039488 bytes free)
BIW_CL#

[Paul Chapman]

Hi -

I forgot to ask you for a "show version" also.  What I was looking for was not in the directory output.

PSC

[Ranjan Singh]

Hi Paul,

Cisco IOS Software, C2960S Software (C2960S-UNIVERSALK9-M), Version 15.0(2a)SE9, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Mon 21-Dec-15 02:41 by prod_rel_team

ROM: Bootstrap program is C2960S board boot loader
BOOTLDR: C2960S Boot Loader (C2960S-HBOOT-M) Version 12.2(55r)SE, RELEASE SOFTWARE (fc1)

Switch uptime is 32 minutes
System returned to ROM by power-on
System image file is "flash:/c2960s-universalk9-mz.150-2a.SE9.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco WS-C2960S-24PS-L (PowerPC) processor (revision D0) with 131072K bytes of memory.
Processor board ID FOC1552X04P
Last reset from power-on
2 Virtual Ethernet interfaces
1 FastEthernet interface
28 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : D4:A0:2A:3A:B9:00
Motherboard assembly number : 73-11908-06
Power supply part number : 341-0393-02
Motherboard serial number : FOC15504PX5
Power supply serial number : DCA1549U3NC
Model revision number : D0
Motherboard revision number : A0
Model number : WS-C2960S-24PS-L
Daughterboard assembly number : 73-11933-04
Daughterboard serial number : FOC154976LU
System serial number : FOC1552X04P
Top Assembly Part Number : 800-30945-02
Top Assembly Revision Number : C0
Version ID : V02
CLEI Code Number : COMGE00ARB
Daughterboard revision number : A0
Hardware Board Revision Number : 0x01

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 28 WS-C2960S-24PS-L 15.0(2a)SE9 C2960S-UNIVERSALK9-M

Configuration register is 0xF

[Paul Chapman]

Hi Ranjan -

I agree.  You probably have a defective switch.  The "dir" command didn't reveal a "config.text.backup" file which would indicate execution of Express Setup.  The "show ver" command revealed that the configuration register for the switch is normal (0xF).  You should open a TAC case and see if you can get the switch replaced.

PSC

[Ranjan Singh]

Thanks Paul for your prompt suggestion!!!

[Furose M]

Hi Rajan,

are you losing the config even without the switch being reloaded? can you check the uptime of the switch using "show version" command?

when you lose the config, if you "Read" the contents of "more flash:config.txt" , do you see the old config?

if you do "show start", do you see the old configs?

[Ranjan Singh]

Hi ,

I lose Config without Reload it . i have kept this switch in our LAB for further troubleshooting.

One thing i have noticed that I had configure Date/Time manually but after one day it got changed auto.

more flash:config.txt--> I do not see old config.

Sh Start--> It show only current configuration.

is there and issue with NVRAM or Flash Memory?