Strange characters in Putty with 2950

[rpkulich]

Hi everyone,

when i connect my Cisco Catalyst 2950 to Putty via USB-Serial i received in terminal only strange characters. I tried change speed (baud rates), but nothing changed.

I also tried reinstall drivers for USB-serial device.

Thanks for help.

[Philip D'Ath]

Make sure your parity is set to 8N1.

[rpkulich]

Yes, parity is OK.

[Philip D'Ath]

And you are using 8 data bits and 1 stop bit?

Can you tried another serial cable?

Failing that, perhaps the console port is no longer functional.  But I would bet my money on a settings mis-match.

[rpkulich]

Yes. (screenshot)

I can't tried, but this cabel it brand new - 2 days old. I can only connect to switch via telnet, so i u got a tip if there is something what i can use via telnet for checking if serial is ok, tell me.

[Julio E. Moisa]

Hi

Try with other speed

1200, 2400, 4800, 9600, 19200, 38400, 57600 and 115200

[rpkulich]

I already tried them, but nothing changed.

[Julio E. Moisa]

Im not really sure if the problem could be about the serial adapter, but it could be, I bought the following a time ago and it works perfectly:

https://www.amazon.com/Plugable-Adapter-Prolific-PL2303HX-Chipset/dp/B00425S1H8/ref=sr_1_8?ie=UTF8&qid=1499554478&sr=8-8&keywords=usb+db9+adapter

[Julio E. Moisa]

Have you used the adapter with other device?

[Julio E. Moisa]

Hi 

Have you tried with the following speeds, usually 9600 is used:

1200, 2400, 4800, 9600, 19200, 38400, 57600 and 115200