This is where I always got hung. I was told to select N for No (as you see below). I selected Y for yes and I successfully configured the switch for my network.
System Configuration Dialog --- At any point you may enter a question mark '?' for help. Use ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets ''. Continue with configuration dialog? [yes/no]: n
In my view you are doing well but there might be something within the startup configuration (ie. the config.text) file which causes the authentication failure (like configuration of external TACACS+ server which was quite popular at the 3548XL times).
So you have basically two options:
1) Provided you feel experienced enough you can try to identify the problem within the config.text file and clear it BEFORE copying it to the running configuration,
2) Or you do not need to bother about the current startup configuration and would just like to start your own configuration. If so than do not rename the config.old back to config.text (and of course do not copy config.text to running-config) but start to configure instead (ie. "conf t") and when you finish just do "wr" and your new startup configuration will be created.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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