Cisco IOS vs. Red Hat Enterprise Linux (RHEL) vs. Ubuntu

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.

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Red Hat Enterprise Linux (RHEL) is best suited for its stability, fast reboot time, and minimal resource requirements which reduce overall cost. The patch time for Red Hat Enterprise Linux (RHEL) is also extremely fast which benefits application up time. For environments or applications that require many changes, for a Red Hat Enterprise Linux (RHEL) support person that is not well trained and experienced in Red Hat Enterprise Linux (RHEL), this can be challenging.

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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.

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• User friendly CLI.
• Quick fixes for critical bugs.
• Longer uptime.

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• Virtualization, like the operating system level task. I see this product is very good and it blends very well with the middleware components like all the JBoss and other things. And other than that, either you install it or a virtual machine or physical servers, it works seamlessly anywhere. And if you want to go further, like Red Hat OpenShift or those things also work very nice with it.

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• PACKAGE MANAGEMENT. You can update everything - OS installed software, you name it with either a few clicks in a GUI or a single command.
• No bloatware.
• No need for antivirus software.
• Certainly the price is right.
• My 83 year old grandmother has been using it - and because of this I rarely need to provide tech support. But I still visit my grandmother.
• You can choose from a variety of user interfaces or rock it in the terminal.
• Generally speaking, Ubuntu is as polished an OS as any you might pay for.

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• 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.

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• In the LEAP process. The upgrading process, which I'm hearing, like I said it before, prior that I was on rail seven, eight, and nine. Trying to get all of that to rail nine and stay current. The LEAP process from seven to eight is a little bit less than desired. I've talked to some people that from once you get on eight from eight to nine to nine to 10 is a breeze. So I'm looking forward to that.

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• The repository system could be a little better, as some of the software needed is not easily available there.
• Ubuntu sometimes does not play nicely or easily with some modern firmwares.
• Some people report slow responses with newer versions of Ubuntu, although we have not experienced any.

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We find RHEL to be a superior OS with stable operations and long life. It is also easier to use and fix then most other OS's.

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While it works, we're finding that SNAP is getting more and more annoying, so we're probably going to migrate to Debian.

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The data that Cisco IOS is able to provide is extremely relevant, it's fast, and it's intuitive. I also love that you're able to leverage things like macros or EEM scrips to run multiple commands at once. This is especially useful when you have more junior or entry level engineers in your environment and you want to provide them with a "shortcut" by having them type a single command to execute multiple commands.

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The Red Hat Enterprise Linux (RHEL) distro is the simplest enterprise version of Red Hat that is enterprise supported and when you deploy as many VMs as we do, it is vital to have that enterprise support. On top of the enterprise support, having access to a commercially supported backbone for updates and upgrades is a huge plus.

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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.

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Product support and regular patches.

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As with any OS enhanced testing will need to be done prior to application integration.

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Red Hat support has really come a long way in the last 10 years, The general support is great, and the specialized product support teams are extremely knowledgeable about their specific products. Response time is good and you never need to escalate.

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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

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Don't be afraid of it, its easy to install and configure for the tasks needed.

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It was all pretty much automatic for our use cases. It integrates nicely with Laravel Forge, which is our primary use case.

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We have found other Cisco software to be filled with added functionalities as compared to iOS. New NCS software has certain programmability features that are advantageous to legacy iOS software but are more complex to use for some users. Hence, we still have most areas of the network that functions using iOS software.

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So we in our company have used Ubuntu as well. Sometimes we have to use that because a certain application installer requires that we use that operating system, but we really don't prefer it just because it doesn't come with the same Add-on features that make Red Hat Enterprise Linux (RHEL) really great, like Red Hat Insights or Red Hat satellite, things like that. They come package with it. So that would be the main one. I've also used things like FreeBSD, but I think that's just too old at this point to care.

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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.

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Operational ease of use backed by support

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• Great uptimes on proven availability/reliability.
• Longevity of these switches ensures great ROI.
• Easy to learn for new users.

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• RHEL provides a good base OS and additional tool sets for various deployments.
• We are able to use Satellite to manage hundreds of OS's behind our corporate firewall. No other OS provides the level that RHEL does.
• It is a known good quantity. Their support for the OS is amazing.

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• 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.

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