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Posts Tagged ‘OpenFlow’

As most people who follow the networking industry know, Juniper outlined its vision for software-defined networks (SDN) at last week’s Global Partner Conference in Las Vegas. I’ve had a bit of time to digest the information, answered a number of questions about it, and I thought it was time to share my thoughts on what they announced and the impact to the industry.

First, summarizing what Juniper announced, they began the presentation with a number of myths regarding software-defined networks and then articulated Juniper’s principals of SDNs. I’m not going to repeat these, but if you missed the webcast, Jim Duffy’s article does a good job of highlighting them.

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Most of the focus of software-defined networks (SDNs) has been on how it impacts the layer 2/3 switch vendors. The industry seems to have moved off of this notion that it commoditizes the underlying infrastructure, but recently another question has come up. Big Switch recently launched the company and related products, one of which is called “Big Tap,” that provide traffic visibility functionality similar to what one might get from vendors such as Gigamon and VSS. This has raised a question: are SDNs a death knell to the traffic visibility vendors?

I looked at this and then talked to a number of customers, including Big Switch, and I believe the information that one can get out of an SDN-led product to be very much complementary to the traffic visibility market, not competitive. Think of “Big Tap” as being traffic visibility light where they provide a very basic level of information. The level of information that one gets from the dedicated vendors is much richer and more granular than what one would get from Big Tap.

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Well, it’s hard to believe but the year is almost up and there are only a mere couple of weeks until we ring in the New Year. So that makes it prediction time for us industry analysts and I’d like to share mine with you. So, drum roll please…

  • 2013 will not be the year of Software Defined Networks. The media hype around SDNs is at an all-time high. However, contrary to some of the predictions I’ve seen, 2013 will not be the year of the SDN as most enterprise network managers are trying to figure out what exactly SDNs are and how they can leverage them. The notion that a technology with such a big architectural difference from the status quo could have rapid uptake is as ridiculous as thinking that Mark Sanchez might actually make a good QB one day. I predict that 2013 will be the year of SDN research, and we’ll start to see some best practices developed and some case studies created.
  • The Application Delivery Controller (ADC) will become part of SDN architecture. I’ve never really liked the term “software” defined networks because software shouldn’t define anything. Software can reconfigure the network, but applications should define it. If that’s the case, what network device has the most knowledge of applications? The ADC does and that’s why the ADC either needs to pass along application information to the controller or actually take on controller functionality. Either way, we’ll see market leader F5 and its band of competitors become relevant to SDNs.
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For decades, networks have been built on closed, proprietary infrastructure. It’s what’s allowed vendors to create unique features and differentiate themselves. Those features are what have enabled the networks to be as reliable, secure and resilient as they have been in the past. However, over the past couple of years it seems that “open” has become the new black when it comes to network infrastructure and every major vendor now has some degree of openness, although may not be 100% open (I’ll define later). Recently, though, I ran across a startup called Pica8 that is, by far, the most open networking vendor that I have seen to date.

Before I get into the specifics of Pica8, let me define why open networking has become all the rage and what it actually means.

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This morning Brocade announced it would acquire privately held open source networking software company Vyatta. The rise of software defined networks seems to be a legitimate problem the Vyatta solution can solve. Founded back in 2005, Vyatta has struggled to find a use case for its virtual routing capabilities over the years, remaining a niche company used by network engineers who like to experiment on the network. I’ve always said the branch router segment of Cisco’s business might be the most difficult market share to cut into, as the Integrated Services Router (ISR) is the de facto standard branch router.

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