The last configuration mode that you will eventually come across is the one associated with configuring routing protocols. We’ll look at routing protocols and their configuration in detail in Chapter 8. For now, it’s enough to simply be familiar with the prompt associated with configuring routing protocols.
Enter configuration commands, one per line. End with CNTL/Z.
We have now seen six different router prompts, four of which fall within global configuration mode. The list below reviews each of the prompts we’ve seen so far, and the mode or level that it designates:
Router> User EXEC mode
Router# Privileged EXEC mode
Router(config)# Global configuration mode
Router(config-if)# Interface level of global configuration mode
Router(config-line)# Line level of global configuration mode
Router(config-router)# Routing protocol level of global configuration mode