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Hello all, I have a Alteon 4408 switch. Even though I configured the switch as baud rate(9600), stop bit(1), it does not working properly. It happened like upper picture.

I changed the baud rate except for 9600. but failed. and I also changed my console cable. but failed.

In the past, I had dealt with 4408, At this time, it worked well.. as I used same console cable.

If you know this issue, please contact me. Regards,

  • 9600,8n1 is the default. Either your serial interface is bad or the 4408 isn't running at the default speed. Try other speeds.
    – Ricky
    Nov 11, 2015 at 21:07

1 Answer 1


it may some thing relate to converter which connect your console cable to the USB port in your computer . may you try to used desktop computer with normal serial port and use putty terminal with the next settings

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and it should work .
otherwise you may check the flow control options in the serial part as next

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and try the 4 options . one of them should work

  • Thank you sir,But I already tried that. But failed... I think it is broken down .. ㅠ_ㅠ ah... is there anything else that I should try ?
    – SK.Kwon
    Nov 11, 2015 at 8:53

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