The banner motd command is used to specify a message of the day (MOTD) banner to users logging into the router. This is a global configuration mode command and is generally used to communicate routers identification information, display any warning specific to the router, or display a remote access security policy, such as "Unauthorized access to the router is prohibited." The syntax for this command is as follows:

banner motd [d message d]

d is the delimiter character. It can be any character of the administrator's choice, with the limitation that the delimiter character cannot be used in the message text.

The hostname command is a global configuration command to assign the router a name for identification. The command syntax is hostname [name].

The description command is an interface configuration mode command that sets a description for that interface.

The boot system command is used to specify the path to the primary IOS file. It is a global configuration command.

The terminal monitor command is used to direct debug and system error message to the monitor when connected to a router using telnet. When you are connected to a router using telnet and you issue the debug command, by default the output can only have been seen through a console session with that router. Executing the terminal monitor command directs that output to the terminal session where it can be viewed.