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once booted console port speeds up to 115200

arunas.usonis
Level 1
Level 1

Hello,

Have a weird situation. For IOS update I have updated console speed up to 115200. Now, once finished

am trying to reduce it down, but apparently have a problem. I did enter set BAUD 9600 in bootloader and reset

but once switch get's fully booted it moves to 115200.

Does anyone knows how to get rid of it ?

Thanks

Arunas

1 Accepted Solution

Accepted Solutions

Peter Paluch
Cisco Employee
Cisco Employee

Arunas,

Can you check the configuration file in your switch, in particular, the line con 0 section? It is possible that it contains the command speed 115200

Simply try configuring the speed 9600 in the line con 0 stanza (expect the speed to change immediately) and then store the configuration.

Best regards,

Peter

View solution in original post

3 Replies 3

Peter Paluch
Cisco Employee
Cisco Employee

Arunas,

Can you check the configuration file in your switch, in particular, the line con 0 section? It is possible that it contains the command speed 115200

Simply try configuring the speed 9600 in the line con 0 stanza (expect the speed to change immediately) and then store the configuration.

Best regards,

Peter

Thanks a lot, that works, just wondering the way it works....am fine with it

Regards

Arunas

Hello Arunas,

The reason, as I see it, is that the BAUD environment variable is valid for the bootloader code. However, modifying the BOOT variable does not modify the startup-config. After the IOS boots up, it uses the settings from the startup-config including the console speed specified in the line con 0 section. Essentially, it overrides the BAUD variable setting with the startup-config file setting.

Best regards,

Peter