Chapter 4. Introduction to Cisco IOS Software
Objectives
Understand Cisco IOS system architecture components.
Work with the Cisco IOS Command Line Interface (CLI) and common commands.
Learn about Cisco IOS troubleshooting techniques.
Understand upgrading and release information.
The Cisco IOS software is network system software that runs on Cisco routers and switches. It is used to configure, monitor, and troubleshoot the system.
System Architecture
Like a computer, a router has a CPU that varies in performance and capabilities depending on the router platform. Two examples of processors that Cisco uses are the Motorola 68030 and the Orion/R4600. The Cisco IOS software running in the router requires the CPU or processor to make routing and bridging decisions, ...
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