Cisco IOS, presently in its 15th edition, is a network operating system for service providers and enterprises alike.
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Ubuntu
Score 8.2 out of 10
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Ubuntu Linux is a Linux-based operating system for personal computers, tablets and smartphones. There is also a Server version which is used on physical or virtual servers in the data center.
I've worked with several network device vendors in my 10+ years of being in the industry and my favorite continues to be Cisco IOS. Overall, Cisco IOS tends to be the most stable, the most intuitive, has the best TAC support, and has the best knowledge base articles and white papers.
If somebody whishes to be an IT professional, learning the basics of Linux is amust. Ubuntu [Linux] is one of the most beginner-friendly, widely supported, easy-to-use-relative-to-the-fact-that-its-still-linux OS on the market. As somebody who learned the basics of UNIX/LINUX on Ubuntu, it was a very good experience. It is customizable, has a lot of improvements over the years, and live up to be a viable alternative to any modern OS in 2021 as well.
By this point, there are several "flavors" of the Cisco IOS such as XE, XR, and the standard Cisco IOS. While they are all fairly similar, there does exist syntax differences between them. It would be ideal if at some point in the future, Cisco is able to unify all of them into one standard operating system which would use the same syntax across all platforms.
While overall Cisco does a great job of QA'ing their IOS, no matter the release, there's always some minor bugs. I think it's important that Cisco continue to pour resources into their QA team to test their software.
While I'm very familiar with the graphical readouts of "show processes cpu history" I would love for Cisco to eventually find a more intuitive way to display this data. I can't begin to count how many times I've had to teach more entry level (and even mid level) engineers how this graph is interpreted.
I do wish that Cisco had something similar to Juniper's "commit check" or "commit confirmed". This helps validate the changes you're about to apply, and catch errors, so that you have a better idea of the impact of the change.
IOS is pretty intuitive as you can use the question marks to check for all the options or parameters for a specific command. Also having the tab key to complete the words is nice as you don't need type the complete command. Using also abbreviated commands with 2 or 3 letters instead of the whole Word makes it a great OS.
I gave it 10 out of 10 because it allows me to do the work I need on a server, such as running a website and database, and making developments. In addition, thanks to its easy and useful interface during installation, it can be easily installed. In addition, thanks to its easily accessible documents, when a problem occurs, it can be solved easily and quickly.
We did not use the managed commercial support, but instead relied on community forums and official documentation. Ubuntu is very well documented across both instructional documentation from the developers themselves as well as informal support forums [ServerFault, YCombinator, Reddit]. It's easy enough to find an answer to any question you may have
Cisco has a better presence on corporate business so it makes it easier to find engineers and technitians to support your network. Also a lot of Universities and schools use it as a reference and use it to teach and prepare students so it will be easier to recruit people with cisco preparation.
Windows 10: Expensive, with more security problems, more difficult to keep updated and less variety of free / open source applications. Its use encourages bad information security practices. OpenSuse Linux: A different distribution at source (Suse Linux), use of rpm packages (with fewer repositories and incompatible with Ubuntu Linux dpkg packages), and whose main objective is to be a "testing ground" for its paid version / professional, SUSE enterprise Linux.
Systems administration with Ubuntu is easy with little deep knowledge about it. Docs and community publications are great resources for any task you need to perform on any Ubuntu server and the organization can save several salaries of specialized sys admins in favor of more active roles.
Having been an Ubuntu user for many years personally, setting up new Ubuntu servers on my organization came with zero cost for me. I just deployed one instance from my hosting/cloud provider and started working right after it was running, no need to ask support or hire new staff for these tasks.
Replacing paid options with Ubuntu have also saved thousands of dollars on Windows Server licenses. I've migrated Windows/SQL Server based systems to Ubuntu/MySQL/PostgreSQL several times during my career and saved about USD 5000/year in licenses to many of them.
