David,
There are limitations to the packet tracer. This seems to be one of them in which the switches do not support the aaa new-model
commands. Funny thing though is that routers and the Layer3 switch that you mention does support the command.
This will always be a limitation of any simulator. Some simulators will also report "canned" output. This means a display of formatted show xxxx
but it's not actually a report of what is happening on the switch. If you check your help file on your packet tracer, you'll see what commands are supported and which ones are not.
Even though the Cisco IOS is a not a full version of the IOS AND that Cisco doesn't recommend it being your only study tool. I do believe that you can use the Packet Tracer to help you achieve the CCENT and CCNA.
Cordially
Ronnie Wong
Host, ITProTV
Cordially,
Ronnie Wong
Edutainer Manager, ITProTV
*if the post above has answered the question, please mark as solved.
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