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Category Archives for "Networking"

Worth Reading: The Tradeoffs of NVM-Express

NVM-Express isn’t new. Development on the interface, which provides lean and mean access to non-volatile memory, first came to light a decade ago, with technical work starting two years later through a work group that comprised more than 90 tech vendors. The first NVM-Express specification came out in 2011, and now the technology is going mainstream. How quickly and pervasively remains to be seen. NVM-Express promises significant boosts in performance to SSDs while driving down the latency, which would be a boon to HPC organizations and the wider world of enterprises as prices for SSDs continue to fall and adoption grows. —Jeffery Burt @ The Next Platform

Introducing the Cloudflare Warp Ingress Controller for Kubernetes

Introducing the Cloudflare Warp Ingress Controller for Kubernetes

It’s ironic that the one thing most programmers would really rather not have to spend time dealing with is... a computer. When you write code it’s written in your head, transferred to a screen with your fingers and then it has to be run. On. A. Computer. Ugh.

Of course, code has to be run and typed on a computer so programmers spend hours configuring and optimizing shells, window managers, editors, build systems, IDEs, compilation times and more so they can minimize the friction all those things introduce. Optimizing your editor’s macros, fonts or colors is a battle to find the most efficient path to go from idea to running code.

Introducing the Cloudflare Warp Ingress Controller for Kubernetes CC BY 2.0 image by Yutaka Tsutano

Once the developer is master of their own universe they can write code at the speed of their mind. But when it comes to putting their code into production (which necessarily requires running their programs on machines that they don’t control) things inevitably go wrong. Production machines are never the same as developer machines.

If you’re not a developer, here’s an analogy. Imagine carefully writing an essay on a subject dear to your heart and then publishing it only to be Continue reading

IBM to ship its Power9 system this month, claiming AI leadership in the data center

With the release this month of the first commercial server based on its Power9 processor, IBM is reaching another milestone in its quest to be the AI-workload leader for data centers and web service providers.The Power9 chips in the systems hitting the market now don't rev up to the top speeds provided by Intel's Xeon Scalable Processor line, but they offer blazing throughput aimed to give them an edge in machine learning and accelerated database applications.IBM unveiled its first Power9 server, the Power System AC922, Tuesday at the AI Summit in New York. It runs a version of the Power9 chip tuned for Linux, with the four-way multithreading variant SMT4. Power9 chips with SMT4 can offer up to 24 cores, though the chips in the AC922 top out at 22 cores. The fastest Power9 in the AC922 runs at 3.3GHz. To read this article in full, please click here

IBM to ship its Power9 system this month, claiming AI leadership in the data center

With the release this month of the first commercial server based on its Power9 processor, IBM is reaching another milestone in its quest to be the AI-workload leader for data centers and web service providers.The Power9 chips in the systems hitting the market now don't rev up to the top speeds provided by Intel's Xeon Scalable Processor line, but they offer blazing throughput aimed to give them an edge in machine learning and accelerated database applications.IBM unveiled its first Power9 server, the Power System AC922, Tuesday at the AI Summit in New York. It runs a version of the Power9 chip tuned for Linux, with the four-way multithreading variant SMT4. Power9 chips with SMT4 can offer up to 24 cores, though the chips in the AC922 top out at 22 cores. The fastest Power9 in the AC922 runs at 3.3GHz. To read this article in full, please click here

Creating a mixed-mode Virtual Chassis Fabric (VCF)

In order to mix EX switches and QFX switches in the same VCF, you need to enable mixed-mode.   This requires all members of the VCF to reboot unfortunately:

{master:1}
imtech@sw0-24c> request virtual-chassis mode fabric mixed
fpc0:
--------------------------------------------------------------------------
Mode set to 'Fabric with mixed devices'. (Reboot required)

fpc2:
--------------------------------------------------------------------------
Mode set to 'Fabric with mixed devices'. (Reboot required)

fpc3:
--------------------------------------------------------------------------
Mode set to 'Fabric with mixed devices'. (Reboot required)

fpc1:
--------------------------------------------------------------------------
WARNING, Virtual Chassis Fabric mode enabled without a valid software license.
 Please contact Juniper Networks to obtain a valid Virtual Chassis Fabric License.

Mode set to 'Fabric with mixed devices'. (Reboot required)

{master:1}
imtech@sw0-24c>

Once you’ve cabled up your QSFP ports between the EX4300 you are adding and the QFX spines, you need to do the following:

Enable the VCF port on the QFX spine:

request virtual-chassis vc-port set pic-slot 0 port 48

 

 

 


Survey: Is your company a Best Place to Work in IT?

Nominate an organization for Computerworld’s 2018 Best Places to Work in IT list: http://survey.researchresults.com/survey/selfserve/53b/s043008901?list=1The 2018 Best Places to Work in IT will be announced in June 2018.Visit our FAQ list here: https://www.computerworld.com/article/2539833/it-management/it-management-best-places-to-work-in-it.htmlTo read this article in full, please click here

Communities Can Own Their Internet Destiny

Imagine you wanted to have an Internet connection and someone decided that you had to wait an undefined amount of time (maybe a year, maybe 10 years) to get access. Would you find it fair? I wouldn’t!

Unfortunately, this is the situation that millions of people in remote communities around the world have to accept. They will have Internet access only when operators decide to give them access which can be in a decade or more. These people won’t enjoy all the benefits we are enjoying today for a long time. And as more and more services go online – and exclusively online – they will not get the services they used to have since the services have moved to a new place where they are not allowed to be.

This is happening because operators can’t expand everywhere at the same time; they have to choose where they go this year, then next year, etc. There are some places where they will never go because those places are not going to bring them money. Among those regions that operators will never choose to go, we find, sadly, are the poorest rural areas that desperately need the economic and development opportunities Continue reading

DDI is a critical component of IoT success

The Internet of Things (IoT) era has finally arrived, and businesses need to be prepared for a world where everything is connected.I’m an analyst so I’ll support my proclamation that IoT is here with data: There are currently 25 billion internet-connected devices, and that will double by 2020 and then grow to 80 billion by 2025. ZK Research However, there’s a more basic way of understanding where we are in the adoption cycle: IoT has become the norm, not the exception, according to companies I talk to. IT and business leader no longer look at me like I have three eyes when I say, “IoT.” In fact, in many conversations with them, the term IoT never comes up — yet they are connecting things. Companies are connecting more things because it makes their businesses run better, and over the next decade, this trend will accelerate.To read this article in full, please click here

DDI is a critical component of IoT success

The Internet of Things (IoT) era has finally arrived, and businesses need to be prepared for a world where everything is connected.I’m an analyst so I’ll support my proclamation that IoT is here with data: There are currently 25 billion internet-connected devices, and that will double by 2020 and then grow to 80 billion by 2025. ZK Research However, there’s a more basic way of understanding where we are in the adoption cycle: IoT has become the norm, not the exception, according to companies I talk to. IT and business leader no longer look at me like I have three eyes when I say, “IoT.” In fact, in many conversations with them, the term IoT never comes up — yet they are connecting things. Companies are connecting more things because it makes their businesses run better, and over the next decade, this trend will accelerate.To read this article in full, please click here

Worth Reading: Hiding the DNS

Among all the working groups that met at IETF 100 in Singapore was the first meeting of the DNS over HTTPs Working Group (DOH). I wrote on a related topic of DNS privacy a little over a year ago, looking at the work at the time on the privacy-related topics of QNAME minimisation, DNS over TLS, and what I called then ‘Secure DNS over JSON’, which was a variant of DNS queries over HTTPS. In this article, I’d like to look in a little more detail at the efforts to hide the DNS behind HTTPS and put the work in the DOH Working Group into a broader perspective. —Geoff Huston @ APNIC

The OSI model explained: How to understand (and remember) the 7 layer network model

When most non-technical people hear the term “seven layers”, they either think of the popular Super Bowl bean dip or they mistakenly think about the seven layers of Hell, courtesy of Dante’s Inferno (there are nine). For IT professionals, the seven layers refer to the Open Systems Interconnection (OSI) model, a conceptual framework that describes the functions of a networking or telecommunication system.The model uses layers to help give a visual description of what is going on with a particular networking system. This can help network managers narrow down problems (Is it a physical issue or something with the application?), as well as computer programmers (when developing an application, which other layers does it need to work with?). Tech vendors selling new products will often refer to the OSI model to help customers understand which layer their products work with or whether it works “across the stack”.To read this article in full, please click here

The OSI model explained: How to understand (and remember) the 7 layer network model

When most non-technical people hear the term “seven layers”, they either think of the popular Super Bowl bean dip or they mistakenly think about the seven layers of Hell, courtesy of Dante’s Inferno (there are nine). For IT professionals, the seven layers refer to the Open Systems Interconnection (OSI) model, a conceptual framework that describes the functions of a networking or telecommunication system.The model uses layers to help give a visual description of what is going on with a particular networking system. This can help network managers narrow down problems (Is it a physical issue or something with the application?), as well as computer programmers (when developing an application, which other layers does it need to work with?). Tech vendors selling new products will often refer to the OSI model to help customers understand which layer their products work with or whether it works “across the stack”.To read this article in full, please click here

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