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CCNA 2: Routers and Routing Basics v3.1 Instructor Guide – Module 3
Copyright
©
2004, Cisco Systems, Inc.
3.1 Configure a Router
Essential Labs:
3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, and 3.1.7
Optional Labs:
None
Core TIs:
All
Optional TIs:
none
Course-Level Claim:
Students can perform, save, and test an initial configuration on a router.
Certification Level Claim:
Students can perform an initial configuration on a router.
Hands-on skills:
none
3.1.1 CLI command modes
The students need to understand that the router does not know what routing to do until it is
configured. This section will help students begin the configuration of a router.
To gain access to a router, a login is required. After login, there is a choice of modes. The
modes interpret the commands that are typed and perform the operations. There are two
EXEC modes:
•
User EXEC mode
•
Privileged EXEC mode
The first configuration mode is referred to as global configuration mode or global config. The
following configuration modes are available in global configuration mode:
•
Interface
•
Subinterface
•
Controller
•
Map-list
•
Map-class
•
Line
•
Router
Global configuration commands are used in a router to apply configuration statements that
affect the entire system. Use the privileged EXEC command
configure terminal
to enter
global configuration mode.
Explain that Cisco IOS is modal. Emphasize that in the CLI that there are different modes to
accomplish different tasks. There are several advantages to this. One is that the commands
are generally shorter because the object of the mode, i.e., the interface, or routing protocol, to
