I’m gearing up for a new certification effort, but after eighteen years of progressive experience in IT, a piece of paper or some new initials in my email signature was an extrinsic motivator I didn’t need. Still I found something about the entire process inviting and realized that it was the intrinsic benefits of certification […]
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OpenStack and VMware? Why not!
CENX brings the LSO webinar to you on September 16. Don't forget to sign up to learn more about LSO and NFV based network solutions for service providers.
In the Assured Security Model, software-defined infrastructure is assisted by an analytics system with state awareness of dynamic data center components.
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Metaswitch vSBC gets the Domain 2.0 nod.
I’m moderating a panel called Cloud Builders at the upcoming Cloud Partners show in Boston! If you’re going to be there, look me up.
The post Come meet me at Cloud Partners appeared first on 'net work.
Mohamed Anwar asked the following question on my post “4 Types of Port Channels and When They’re Used“.
“I need a clarification, where if a member link fails, what will happen to the traffic already sent over that link ? Is there any mechanism to notify the upper layer about the loss and ask it to resend ? How this link failure will be handled for data traffic and control traffic ?”
–Mohamed Anwar
I think his questions are really important because he hits on two really key aspects of a failure event: what happens in the data plane and what happens in the control plane.
A network designer needs to bear both of these aspects in mind as part of their design. Overlooking either aspect will almost always open the network up to additional risk.
I think it’s well understood that port channels add resiliency in the data plane (I cover some of that in the previous article). What may not be well understood is that port channels also contribute to a stable control plane! I’ll talk about that below. I’ll also address Mohamed’s question about what happens to traffic on the failed link.
The control Continue reading
As promised, Big Switch releases Big Cloud Fabric 3.0, among other enhancements.
Imagine you’re sitting in a presentation. You’re hearing some great information from the presenter and you can’t wait to share it with your colleagues or with the wider community. You are just about to say something when you look in the corner of the slide and you see…
You pause for a moment and ask the presenter if this slide is a secret or if you should consider it under NDA. They respond that this slide can be shared with no restrictions and the information is publicly available. Which raises the question: Why is a public slide marked “confidential”?
The laws that govern confidential information are legion. Confidential information is a bit different than copyrighted information or intellectual property that has been patented. In most cases, confidential information is treated as a trade secret. Trade secrets can be harmful if they are divulged, since a trade secret can’t be patented.
A great example is the formula for Coca-Cola. If they tried to patent it they would have to write down all the ingredients. While that would protect the very specific formulation of their drink it would also allow their competitors to create something extremely Continue reading
