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If one process fails, it can impact others, which might lead to a device reload.Ĭisco IOS provides many cost-effective networking features to meet the present needs of evolving business. Traditional IOS does not support distributed memory allocation that’s why there is no memory protection between processes. Cisco IOS provides the mechanism of a monolithic kernel, which means that every installation or implementation uses a single image and all processes share the same memory space. Cisco IOS made history in term of the evolution of data communication by providing a revolutionary tool of computer networking to make information-intensive companies all over the world more productive.
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Cisco IOS is a software-based platform used to maintain network infrastructure (both LAN & WAN) and telecommunications functions on various Cisco networking devices.
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Here we will go through the similarities and differences of Cisco’s IOS (IOS, IOS-XE, IOS-XR, and NX-OS) you will also come to know how all are different to fulfill specific requirement of a network design.Ĭisco Internetwork Operating System, aka Cisco IOS, is a worldwide known CLI-based operating system that runs over most Cisco routers, switches, firewall and other network devices. If you do feel the same, then this article is a “must-read” for you. Sometimes we confuse different versions of IOS (I always had a question few years back, “What are the similarities and differences between these different IOS platforms?”).
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Sometimes we feel that we are good enough in configuring network technologies like routing, switching, route-filtering, etc., but usually we don’t have time to think about command executions, meaning how it works, what the IOS platform provides, what kind of liberty there is for network implementation but, at some points, these implementations leave questions/queries in respect to Cisco IOS, especially the differentiation between IOS, IOS-XE, IOS-XR, and NX-OS. Router and switches were empowered with NOS (network operating system was specially designed for implementing and administrative network services) but nowadays networking is not only limited to emails, web browsing, or file transfer technologies like instant messaging, online banking, online shopping, and video conferencing are a part of today’s life and the future of networking can be seen with Google fiber, revolutionary Smart Cities projects, sensor-based technologies behind the use of “Big Data.” To handle these kinds of advancements, a network operating system must capable of fast convergence, high scalability and availability so, with this article we will see how Cisco has evolved its IOS (Internetwork Operating Systems) to meet the requirement of current business demand. CPU usage and memory utilization were also very limited to process these services. Multi-protocol network support: nowadays several network protocols are in use for example, IPv4, IPv6, AppleTalk, Ethernet, etc.īut in the early 1990s, there was a very limited number of network applications for example e-mail, print, and file servers.