Cisco IOS, presently in its 15th edition, is a network operating system for service providers and enterprises alike.
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Cisco NX-OS
Score 8.2 out of 10
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Cisco NX-OS is a network operating system presented as a solution to help network operations move at the speed of business, with comprehensive automation, extensive visibility, and flexible open architectures for data center networks. NX-OS is the network operating system for all fabric architectures, from traditional L2/L3 to overlay-based fabrics.Cisco NX-OS powers the modern data center.
I am much more familiar with the commands in Cisco IOS as it has been around for many more years. I know why NX-OS is a different system and can see the benefits of the fibre channel integration, but I do not understand why the commands had to use a different syntax. With the …
When compared to these data center switches, I think Cisco Nx-OS based data center switches fare very well in terms of performance and reliability. When looking and talking about security, Cisco and Juniper Junos are comparable but Huawei switches lag in terms of security due …
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.
This easy solution can be a great help for the big companies on easy multiple data processing and effective networking solutions for the various departments and also generating the real-time data reports with Cisco NX-OS is excellent. For the new users, it takes no time to become a pro on full manipulation of the features and offer the best and quality management services.
Cisco NX-OS does a great job of supporting high dense environments due to Cisco NX-OS based devices having some of the fastest packet switching performance
Cisco NX-OS supports high bandwidth environments really well due to the high throughput links that are typically found in Cisco NX-OS network appliances
Cisco NX-OS provides some of the best redundancy in the way of "Active-Active redundancy" via it's VPC technology. This is especially desirable in data center environments.
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.
I think one thing we'd like to see a bit more in the Nexus space is probably the troubleshooting features. So one would be the I perf feature and being able to test network traffic across links. Don't get me wrong, there's a lot of really good features in terms of troubleshooting, but one particular one that we like to see is where we can test network traffic. We can make sure that we have good latency, we got good bandwidth utilization as well. For us that's a big one. We've got to use third party tools to do that. So if the NXOS platform can do it, that's one of the thing we've got to do.
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.
NX-OS has many similarities with the traditional IOS which is quite beneficial when it comes to configuration and learning. As a native Linux system, there are a lot of tools and features that can be enabled for any use case.
Our switches running NX-OS have provided solid consistent throughput. We haven't had any issues with it not being able to handle what we threw at it. The latency is extremely low. It also has multiple management options that we hope to pursue in the future.
Cisco support never fails me. In terms of timely response, no one is on par with them. They really value the impact of having technical issues and potential business stoppage. Also, their support staff are well equipped with knowledge and skills and easily resolve the most common incidents. Most of the time, we can resolve an issue by just calling them once.
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.
I am much more familiar with the commands in Cisco IOS as it has been around for many more years. I know why NX-OS is a different system and can see the benefits of the fibre channel integration, but I do not understand why the commands had to use a different syntax. With the Nexus switches you don't get a choice of operating system unfortunately.
Up to now, we haven't had a major ground-shaking attack on our networks but we take no chances by using NX-OS alongside a SIEM. All endpoints and workloads are secure so I would say we have plenty of trust in their security model.
Cisco NX-OS has provided extremely high availability in our organization; especially when we've had to perform upgrades. We've been able to leverage their ISSU technology to perform system upgrades/downgrades with no downtime
Cisco NX-OS has allowed us to leverage high throughput packet forwarding for all of our application needs. I can't remember the last time anyone has complained about slow application speeds in my environment.
