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Category Archives for "Networking"

Customizing your text colors on the Linux command line

If you spend much time on the Linux command line (and you probably wouldn't be reading this if you didn't), you've undoubtedly noticed that the ls command displays your files in a number of different colors. You've probably also come to recognize some of the distinctions — directories appearing in one color, executable files in another, etc.How that all happens and what options are available for you to change the color assignments might not be so obvious.[ Also read: Unix tip: Coloring your world with LS_COLORS | Get regularly scheduled insights by signing up for Network World newsletters. ] One way to get a big dose of data showing how these colors are assigned is to run the dircolors command. It will show you something like this:To read this article in full, please click here

Cisco loses key software exec

Cisco lost a key warrior in its battle to become a monster software player this week as Rowan Trollope, senior vice president and head of the $5 billion Application Group, said he would be leaving the company effective May 3 to become CEO of cloud startup Five9.“During Trollope’s tenure, his team reinvented Cisco’s Collaboration business, pivoting to a SaaS model and making design, simplicity and exponential improvement the guiding principles of product development,” Five9 wrote in describing its new CEO’s pedigree.To read this article in full, please click here

Cisco loses key software exec

Cisco lost a key warrior in its battle to become a monster software player this week as Rowan Trollope, senior vice president and head of the $5 billion Application Group, said he would be leaving the company effective May 3 to become CEO of cloud startup Five9.“During Trollope’s tenure, his team reinvented Cisco’s Collaboration business, pivoting to a SaaS model and making design, simplicity and exponential improvement the guiding principles of product development,” Five9 wrote in describing its new CEO’s pedigree.To read this article in full, please click here

Andromeda: performance, isolation, and velocity at scale in cloud network virtualization

Andromeda: performance, isolation, and velocity at scale in cloud network virtualization Dalton et al., NSDI’18

Yesterday we took a look at the Microsoft Azure networking stack, today it’s the turn of the Google Cloud Platform. (It’s a very handy coincidence to have two such experience and system design report papers appearing side by side so that we can compare). Andromeda has similar design goals to AccelNet: performance close to hardware, serviceability, and the flexibility and velocity of a software-based architecture. The Google team solve those challenges in a very different way though, being prepared to make use of host cores (which you’ll recall the Azure team wanted to avoid).

We opted for a high-performance software-based architecture instead of a hardware-only solution like SR-IOV because software enables flexible, high-velocity feature deployment… Andromeda consumes a few percent of the CPU and memory on-host. One physical CPU core is reserved for the Andromeda dataplane… In the future, we plan to increase the dataplane CPU reservation to two physical cores on newer hosts with faster physical NICs and more CPU cores in order to improve VM network throughput.

High-level design

Both the control plane and data plane use a hierarchical structure. The control Continue reading

IDG Contributor Network: Protecting data in a hybrid cloud environment

The past few months have been incredibly instructive on the critical importance of keeping one’s data safe, be it customer data or your own intellectual property.  Data protection itself covers a broad span: Physical data protection Protection from device failure Protection from data loss and breach Not only is data security important to the success and reputation of your company, it can be IT that goes “under the bus” when a security event occurs. This means that your career is literally on the line. As a result, your storage architecture better be up to the task of maintaining the integrity of your data store.To read this article in full, please click here

AI, analytics drive Dell EMC storage, server upgrades

Dell EMC this week unveiled storage, server and hyperconvergence upgrades aimed at enterprises that are grappling with new application types, ongoing digital transformation efforts, and the pressure to deliver higher performance and greater automation in the data center.On the storage front, Dell EMC rearchitected its flagship VMAX enterprise product line, which is now called PowerMax, to include NVMe support and a built-in machine learning engine. Its XtremIO all-flash array offers native replication for the first time and a lower entry-level price. To read this article in full, please click here

AI, analytics drive Dell EMC storage, server upgrades

Dell EMC this week unveiled storage, server and hyperconvergence upgrades aimed at enterprises that are grappling with new application types, ongoing digital transformation efforts, and the pressure to deliver higher performance and greater automation in the data center.On the storage front, Dell EMC rearchitected its flagship VMAX enterprise product line, which is now called PowerMax, to include NVMe support and a built-in machine learning engine. Its XtremIO all-flash array offers native replication for the first time and a lower entry-level price. To read this article in full, please click here

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