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New Member

Cisco 3750X upgrading issues

Hi All,

I had a strange problem here after upgrading Cisco 3750X.

The upgrading was going smoothly, I copied a newer IOS to the flash from another Cisco 3750X through TFTP, changed the boot image.

It took a while do to the microcode upgrading, finally, it started to boot up. But when it completes the boot up, I can't see the nornal login prompt, but only some strange codes. From what I can see, it seems some decoding problem, as if I plug or unplug a cable from the swich, the strange code pops up again, like in normal situation, the console tells you that the interface is going up and down.

The original image of the switch: c3750e-universalk9-mz.122-53.SE2.bin

Upgrade to image:                      c3750e-universalk9-mz.122-55.SE3.bin

However, I don't have any problem to telnet to this switch, as it has correct IP address and login configured before the upgrading. I have reboot the switch for couple of times, reconnect to the serial port still doesn't show me anything.

I am wonering has any one has met this situation before? Thanks in advance! Below is the detailed message shown after the boot up.

-------------------

cisco WS-C3750X-48 (PowerPC405) processor (revision A0) with 262144K bytes of memory.

Processor board ID FDO1449Z04L

Last reset from power-on

1 Virtual Ethernet interface

1 FastEthernet interface

52 Gigabit Ethernet interfaces

2 Ten Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address       : E0:5F:B9:9B:7D:00

Motherboard assembly number     : 73-12552-04

Motherboard serial number       : FDO14490UG0

Model revision number           : A0

Motherboard revision number     : A0

Model number                    : WS-C3750X-48T-S

Daughterboard assembly number   : 800-32727-01

Daughterboard serial number     : FDO144913QF

System serial number            : FDO1449Z04L

Top Assembly Part Number        : 800-31326-01

Top Assembly Revision Number    : A0

Version ID                      : V01

CLEI Code Number                : COMJT00ARA

Hardware Board Revision Number  : 0x02

Switch Ports Model              SW Version            SW Image                

------ ----- -----              ----------            ----------              

*    1 54    WS-C3750X-48       12.2(55)SE3           C3750E-UNIVERSALK9-M    

∞w7¯60`≤ö^4"¥Ç4ÿ∂46s4134oï774∑ò0¥∆7¥7∂ª9m6∂e√7∑3hˇ∂!≤6πù±8Œa77∫4ßc≤,ŒapV3∂6∂6L¥5∂26∂∂6Lç¶0ºÜBˇLö6∑7∑ò,πw:±∑∑77+5Ì8C7+7ç»π77∑6«∑∑ßaπå∞Çò4≤∑7≤¸∂6˜Éòåä2óπh;;∞6#¥4≤∑ñ∏6π9Böµ7Ω

                                                            8÷Çì+ù37∑∞8

                                                                       ¥êˇ∂+ò∑2#¥4ªªπ∑∑77#µ‰∂≤∞6∂

                                                                                                 Z734±Dö&∑°±0∂≥6∞,∑4¸5 ∂GπòN+®7ïZ2i7576≥3å1õæ+≥∂6≥≥2ì&éLû6;ºh7ï8

                                                 û∑63∂ˆ6gI2á226ˆ62I262;;∂7"75∑∑7∏h7ˇ82)«≤∑≥∂˛82)«≤∑≥∂¥8M±73≤∑óΩˇ62I2d6∑d≤61<¥66≥7˙

U_i+g d_i+e_ +e__i-+ 1 f-_ +edia +y-e 2

---------------------

By the way, I post the output of  "show version" here.

Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (f

c1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2011 by Cisco Systems, Inc.

Compiled Thu 05-May-11 15:40 by prod_rel_team

Image text-base: 0x00003000, data-base: 0x02800000

ROM: Bootstrap program is C3750E boot loader

BOOTLDR: C3750E Boot Loader (C3750X-HBOOT-M) Version 12.2(53r)SE1, RELEASE SOFTWARE (fc1)

Colo-SW1 uptime is 34 minutes

System returned to ROM by power-on

System image file is "flash:/c3750e-universalk9-mz.122-55.SE3/c3750e-universalk9-mz.122-55.SE3.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.

License Level: ipbase

License Type: Permanent

Next reload license Level: ipbase

cisco WS-C3750X-48 (PowerPC405) processor (revision A0) with 262144K bytes of memory.

Processor board ID FDO1449Z04L

Last reset from power-on

2 Virtual Ethernet interfaces

1 FastEthernet interface

52 Gigabit Ethernet interfaces

2 Ten Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address       : E0:5F:B9:9B:7D:00

Motherboard assembly number     : 73-12552-04

Motherboard serial number       : FDO14490UG0

Model revision number           : A0

Motherboard revision number     : A0

Model number                    : WS-C3750X-48T-S

Daughterboard assembly number   : 800-32727-01

Daughterboard serial number     : FDO144913QF

System serial number            : FDO1449Z04L

Top Assembly Part Number        : 800-31326-01

Top Assembly Revision Number    : A0

Version ID                      : V01

CLEI Code Number                : COMJT00ARA

Hardware Board Revision Number  : 0x02

Switch Ports Model              SW Version            SW Image

------ ----- -----              ----------            ----------

*    1 54    WS-C3750X-48       12.2(55)SE3           C3750E-UNIVERSALK9-M

Configuration register is 0xF

----------------------------------------------

thanks !

  • LAN Switching and Routing
Everyone's tags (3)
3 REPLIES
Hall of Fame Super Gold

Cisco 3750X upgrading issues

I have used this IOS before but I have not seen this case before.  Why not go to SE4 or SE5 instead?

New Member

Cisco 3750X upgrading issues

Hi Leolaohoo,

thanks for your reply.

I wanted to go SE4 or SE5, But I can't download the IOS, as I don't have a service contract associated, sigh.

This 12.2 55-SE3 works fine on anothe Cisco 3750X, but the one I upgraded is about 1 year and a half old.

New Member

Cisco 3750X upgrading issues

I figured out the problem.

I checked the running config of this switch, I noticed that for some reason, a line called "line speed 115200" was added under "Line con 0". I did this on the boot loader only when doing the IOS transfer through Xmodem. I have already changed it back in the boot loader, I've no idea why it was added into the running config.

I just simply changed it to "line speed 9600", then everything is back to normal.

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