Chapter 2. Software Evolution of the CSR 1000
Now that you have reviewed the concepts of cloud and enterprise trends, this chapter provides an introduction to CSR 1000V. This chapter starts with some quick background on Cisco IOS that led to the development of the IOS XE architecture used in the ASR 1000 and ISR 4000 series platforms. This will help you better understand the CSR 1000V architecture.
IOS Software Architecture
The Internetworking Operating System (IOS) has been one of the primary operating systems for Cisco routers. IOS is a specialized operating system that runs on specialized hardware. It was first developed back in the 1980s to be a small embedded operating system for routers and switches. At the time, network devices had limited ...