Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Unable to change console speed on C2960 with set/unset BAUD

Hi,

I have just recover my c2960 switch uploading IOS by xmodem. During the orocedure I changed the baud rate to 115200 to make faster, and now I am not able to change it. I tried unset BAUD, set BAUD 9600... anytime I reboot the switch is again with 115200.

In show run after rebooting appears

line console 0

speed 115200

I have changed it with speed command and save, but is appears again after reboot.

Any idea?

12 REPLIES
Silver

Re: Unable to change console speed on C2960 with set/unset BAUD

check ur sh startup-config, what is the value ?If 9600 there.

Then ur switch configuration register is set to a value where it bypass the statupconfig file a boot.

New Member

Re: Unable to change console speed on C2960 with set/unset BAUD

Hi

Try changing your config-register value to 0x2101 or 0x2102.save it and restart. That will set the baud rate back to 9600.

"Pls Rate if it helps"

Ullas

New Member

Re: Unable to change console speed on C2960 with set/unset BAUD

Hi Viyuan,

My startup configuration was empty ¿? I retype again speed 9600 in line console 0, save and copy running into startup-config

With this, my startup configuration now is correct. I reloaded the switch and I still have 115200. I think the router doesn't chose the correct config file for booting.

Switch#dir

Directory of flash:/

2 -rwx 616 Mar 1 1993 00:43:58 +00:00 vlan.dat

3 -rwx 5 Mar 1 1993 00:06:23 +00:00 private-config.text

5 -rwx 4671232 Jan 1 1970 02:44:02 +00:00 c2960-lanbase-mz.122-2-25.SEE3.bin

7 -rwx 1905 Mar 1 1993 00:06:23 +00:00 config.text

621 drwx 192 Mar 1 1993 00:24:55 +00:00 c2960-lanbase-mz.122-25.FX

32514048 bytes total (22154752 bytes free)

Switch#show boot

BOOT path-list : flash:c2960-lanbase-mz.122-25.FX/c2960-lanbase-mz.122-25.FX.bin

Config file : flash:/config.text

Private Config file : flash:/private-config.text

Enable Break : no

Manual Boot : no

HELPER path-list :

Auto upgrade : yes

NVRAM/Config file

buffer size: 65536

Any idea?

Purple

Re: Unable to change console speed on C2960 with set/unset BAUD

Whats does your config register say ? Do a show version and it will tell you what it is. If its not 0x2101 or 0x2102 then it is incorrect and you have to change it . Putting anything on the line console interface will not help. The register governs the console speed.

New Member

Re: Unable to change console speed on C2960 with set/unset BAUD

Hi Glen,

As you can see config register is 0xF. I hadn't change it, this is the factory value.

Switch#show version

Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(25)FX, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2005 by Cisco Systems, Inc.

Compiled Wed 12-Oct-05 22:05 by yenanh

ROM: Bootstrap program is C2960 boot loader

BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(25r)SEE1, RELEASE SOFTWARE (fc1)

Switch uptime is 3 hours, 58 minutes

System returned to ROM by power-on

System image file is "flash:c2960-lanbase-mz.122-25.FX/c2960-lanbase-mz.122-25.FX.bin"

cisco WS-C2960-48TC-L (PowerPC405) processor (revision C0) with 61440K/4088K bytes of memory.

Processor board ID FOC1121ZDJE

Last reset from power-on

1 Virtual Ethernet interface

48 FastEthernet interfaces

2 Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

64K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address : 00:1C:57:74:AA:80

Motherboard assembly number : 73-9835-07

Power supply part number : 341-0097-02

Motherboard serial number : FOC1121400G

Power supply serial number : DCA111486MQ

Model revision number : C0

Motherboard revision number : C0

Model number : WS-C2960-48TC-L

System serial number : FOC1121ZDJE

Top Assembly Part Number : 800-26672-02

Top Assembly Revision Number : D0

Version ID : V02

CLEI Code Number : COM3F00BRA

Hardware Board Revision Number : 0x02

Switch Ports Model SW Version SW Image

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

* 1 50 WS-C2960-48TC-L 12.2(25)FX C2960-LANBASE-M

Configuration register is 0xF

Switch#

Silver

Re: Unable to change console speed on C2960 with set/unset BAUD

An mentioned in other post ur configuration register looks like is 0x2142(can be something else) in this setting it dont read the startup-config.

YOu change to this value if you forgot the password and cannot login.

New Member

Re: Unable to change console speed on C2960 with set/unset BAUD

Hi,

Yes I know what you mean I have use those values with other models for password recovery, but in this case the config register is 0xF which is normal in this model as I has been reading. You can see the show version in the answer I wrote before to glen.grant.

Silver

Re: Unable to change console speed on C2960 with set/unset BAUD

BOOT path-list : flash:c2960-lanbase-mz.122-25.FX/c2960-lanbase-mz.122-25.FX.bin

Config file : flash:/config.text

Your config file path has /,u can try without it like in flash path.

Though it doesnot make sense but sometimes i see problem when i include / in defining path.

New Member

Re: Unable to change console speed on C2960 with set/unset BAUD

I have another 2960 with the same path and everithing goes correct.

Anyway I tried by changing the path to

flash:c2960-lanbase-mz.122-2-25.SEE3.bin

and the problem persists. The load of the image is normal but I still can't change the console baud rate.

This is very strange. It must be something fixed before the load of the image.

New Member

Re: Unable to change console speed on C2960 with set/unset BAUD

:o) It works.

This is what I did:

-shutdown the switch

-press Mode button while power on the switch to enter in switch: mode.

-enter set command to see the BAUD=115200

-enter flash_init command

-now is the right moment to enter unset BAUD command

-continue booting the switch in my case with

boot flash:c2960-lanbase-mz.122-2-25.SEE3.bin

I have reloaded the switch several times after this and fortunately it remains with the correct bau rate.

Anyway thanks for your help.

New Member

Unable to change console speed on C2960 with set/unset BAUD

This works for 3560's as well been driving me insane o my lab..

many thanks loretomarquez

You must be precise with the syntax  

the command is    unset BAUD   from switch:

New Member

Boot the switch in

Boot the switch in ROMMON

Change it in ROMMON (case sensitive):

set BAUD 9600

Reboot the switch.

14115
Views
0
Helpful
12
Replies