I have heard that this new certification track, Cisco Data Center, is going to be the future, and Cisco UCS technology will replace traditional routers and switches.

How is the UCS different from traditional network systems?

I saw a blog in which there were posts that VMware NSX can be integrated with Cisco UCS to push the limits of these systems. Does using NSX mean that vSphere runs on top of UCS, and NSX runs on top of vSphere?

  • Thank you for your question, there are some parts of this question we simply cannot answer... examples A) "Cisco UCS technology will replace traditional Routers and switches.... to what extent is this true?" May I remove the pieces we cannot answer? Jan 29 '14 at 18:34
  • Yea sure ... you are welcome to answer how much you are able to... Jan 29 '14 at 18:36
  • Did any answer help you? if so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you could provide and accept your own answer.
    – Ron Maupin
    Aug 10 '17 at 3:01
  • @RonMaupin Not sure how to accept the answer. Jul 20 '18 at 6:19
  • You should see a check mark by the Up/Down arrows next to each answer. Click the check mark to accept the answer.
    – Ron Maupin
    Jul 20 '18 at 13:14


This is a lot of questions and some misconceptions. Let me clarify few things.

First of all, Cisco DC certification track is like any other - has it's junior, senior and expert levels. Cisco UCS is on it's basic level an integrated computing system, and the Cisco Unified Fabric solution integrates computing (UCS), networking (Nexus) and application-awareness (ACI/APIC).

The idea for computing resources to fully replace routers & switches is promoted mostly by OpenFlow "believers", and while theoretically possible (look for definitions of SDN), it's currently feasible only to limited extent in software-defined environments, like fully integrated DC. You will see more and more physical boxes virtualized as software elements, but this has it's pros and cons, and there's no easy answer or direction.

As for NSX - it's networking virtualization solution, and can run on different hypervisors, doesn't have to be put on top of VMWare vSphere. And obviously, hypervisor needs an hardware to run on, so Cisco UCS can be the hardware. NSX is not the only solution for networking virtualization, or NfV (Networking functions Virtualization), it's just VMWare take at it.


Cisco UCS is basically simply compute gear (memory, I/O, storage).

UCS will not replace Ethernet switches as there is always going to be a need for a box to physically plug the compute gear into. Ethernet is not going away, even though they are trying to rename it to 'Fabric'. Fabric is marketing, Ethernet is IEEE standard.

VMWare NSX is simply an overlay networking technology. NSX traffic is tunneled across the underlying IP (layer3) network. So is OTV, and many other fancy new acronyms.

The issue with Data Center being the future is at some point the rest of y'all are going to realize, ...wait a minute, why do I want to worry about all this, and you will purchase utility compute from a trusted mega compute player - Google, AWS, OpenShift online, Azure.

Learn software, how to create it, how to automate mundane tasks. There's a future in Web development (lots of meat left on the Microsoft corpse). Follow the mega vendors and most importantly the Standards bodies (IETF, ONF, W3C, etc). You absolutely must become skilled in IP,JavaScript,HTML,CSS,and SQL + NoSQL databases. I can't speak to Python as I have no interest in it at this time.

  • 1
    A brief answer to what I asked, following up with a good recommendation to progress if I love technology. Interestingly it so happened that I am into Automation now :) Jul 20 '18 at 6:16

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.