Cisco serial console periodically ssends @ character

[Filip Maroul]

Hello comunity,

I have problem witch Cisco serial console on awitch 9200L. I am connecting from Debian 12 with gnome. When I login to cisco via serial console with usb-serial reduction, the console start automatically entering this charecter "@" like so:

switch>^@

switch>^@

And this was repeating every 3s. So I cant type any commands. Does anyone knows wheres could be the problem ?

Thank you for any advice.

[Gopinath_Pigili]

Try to change speed....

You  try to test with  these speeds: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200

Your problem might fix with any one of the speed....

Best regards
******* If This Helps, Please Rate *******

[Filip Maroul]

Hello,

thank you for your respond. I try all speed with no effect.

[Gopinath_Pigili]

Try with following key board settings with putty....for some scenario's/people issue is resolved with these settings..

[Filip Maroul]

Hello and thank you lot for help.

I must apologize, It was my system problem. I had running "pwrstatd" service which thinks the new serial device is UPS. After disabled this service all working.

[Gopinath_Pigili]

ok...Thanks for the confirmation...