RADIUS Setup

How accurate is the below config for setting up RADIUS:

Router(config)#aaa new-model
Router(config)#username ### password ###
Router(config)#radius-server [name]
Router(config-radius-server)#address ipv4 [IP]
Router(config-radius-server)#key [key]
Router(config)aaa group server radius [group name]
Router(config-sg-radius)#server name [name]
Router(config)#aaa authentication login default group [group name] local

This is taken from Lammle's book but when i've looked online and in Packet Tracer they use Router(config)#radius-server host [ip] instead of Router(config)#radius-server [name].

Would not setting the name not affect this when it comes to setting the Router(config-sg-radius)#server name [name] later in the config as you haven't yet named the server?

Cheers.