Cisco Systems CCNA 2 manual Configuring a router name, Configuring router passwords

be changed does not need to be specified in the command. Another advantage is that only the parameters, or objects of the mode, i.e., the interface, or routing protocol, can be modified by the command. This helps prevent accidental configuration of the wrong object. There are shortcuts to show students at a later time:

•config t for configure terminal

•int fa0/0 for interface fastethernet 0/0

Students commonly enter the correct command at the incorrect prompt. If the students are unable to enter a command, check the mode. The prompt will be either Router(config)# or Router(config-if)#.

Ask students the following questions:

•Which mode is the user in when first logging into the router?

•What mode is the user in after entering the enable command?

3.1.2Configuring a router name

One of the first basic configuration tasks is to name a router. This task helps with network management and uniquely identifies each router within a network. Use global configuration mode to name a router. The name of a router is called the hostname and will be displayed as the system prompt. If a router is not named, then the system default will be “Router”.

Students need to understand that the name is an important part of the configuration process. Much of the configuration and troubleshooting will be performed remotely. Users will telnet into different routers. For practice, ask students to name the routers. When instructors are asked to help troubleshoot a lab, they can easily identify the different routers. The router name at the prompt confirms the student has completed this task. Students should also understand that names should be chosen to represent a location or a function. In many organizations, there are naming conventions to be followed.

Ask students the following questions:

•What is the default name of the router?

•In which mode can the user name the router?

•What is the command to name a router?

3.1.3Configuring router passwords

Passwords can be used to secure a router and restrict access. Passwords can be established for virtual terminal lines and the console line. The privileged EXEC mode may also have a password. From global configuration mode use the enable password command to restrict access to the privileged mode. The line configuration mode can be used to establish a login password on the console terminal. Use the command line vty 0 4 to establish a login password on incoming Telnet sessions.

29 - 238 CCNA 2: Routers and Routing Basics v3.1 Instructor Guide – Module 3 Copyright ♥ 2004, Cisco Systems, Inc.