The Command "crypto key generate" in CIsco Packet Tracer vs Cisco CML

[Irene]

I've noticed a difference in the way the command needs to be typed in Cisco Packet Tracer vs Cisco CML. In Cisco Packet Tracer (Version 8.2.1.0118), the command has to be typed like this: crypto key generate rsa general-keys modulus 2048. In Cisco CML, the command can be written like this: crypto key generate rsa modulus 2048. Why does Cisco Packet Tracer require the additional "general-keys" key word, but Cisco CML does not? 

[bigevilbeard]

From what I recall this was in older IOS, it was later simplified in the command syntax and in newer IOS versions, making "general-keys" the default behaviour and optional. It specified that a general-purpose key pair will be generated which is the default.

I’m guessing as CML uses more recent images that more closely match real Cisco stuff, where the simplified command syntax is accepted.