Chapter 1. Introduction to the Operating Systems
This chapter covers the following topics:
IOS, IOS XE, and IOS XR software architecture
Command-line interface (CLI) modes
Configuration fundamentals
The Cisco Internetworking Operating System (IOS) is the software that powers millions of routers around the world. The IOS operating system (OS) has a long history of successfully meeting the constantly evolving challenges of multiprotocol routing. IOS ...
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