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Category Archives for "Network World SDN"

What is a digital twin and why it’s important to IoT

Digital twin technology has moved beyond manufacturing and into the merging worlds of  Internet of Things, artificial intelligence and data analytics.As more complex “things” become connected, with the ability to produce data, having a digital equivalent gives data scientists and other IT professionals the ability to optimize deployments for peak efficiency and create other what-if scenarios.What is a digital twin? A digital twin is a digital representation of a physical object or system. The technology behind digital twins has expanded to include buildings, factories and even cities, and some have argued that even people and processes can have digital twins, expanding the concept even further.To read this article in full, please click here

How 5G speeds compare across the globe—and why they differ

5G cellular networks are one of the most-hyped broadband technologies in the last decade. They’re designed to make cellular networks more efficient and reallocate more of the spectrum to data than to voice capabilities, increasing throughput. And 5G add-ons like mmWave promise superfast performance when you are very close to a cellular tower.But do they really make a difference on user devices that businesses use both for their own staff’s work purposes and for the services they sell to consumers? The answer, a new report from telecom consultancy Opensignal, says yes.To read this article in full, please click here

Cisco and NetApp upgrade their converged-infrastructure for hybrid cloud

Cisco and NetApp have upgraded their converged-infrastructure platform, FlexPod, to handle hybrid-cloud services.FlexPod--which Cisco and NetApp have been building since 2010 and has some 10,000 customers the vendors say--includes integrated Cisco UCS servers and networking gear and NetApp ONTAP storage components sold as an on-premises or edge converged-infrastructure package.How to build a hybrid-cloud strategy Customers are now in the midst of a major shift to modernize and unify their infrastructure and operations, Siva Sivakumar senior director for Computing System Platforms Group at Cisco said in a blog about the enhancements. “Customers are evaluating every tool available to augment their in-house resources and skillsets including automation, observability, and a variety of hybrid-cloud and SaaS services," he wrote. "The goal is simple: Use whatever is available to supercharge IT productivity and agility to drive better operational results while lowering operational costs.”To read this article in full, please click here

What is hyperconvergence?

Hyperconvergence is an IT framework that combines storage, computing and networking into a single system in an effort to reduce data center complexity and increase scalability.Hyperconverged platforms include a hypervisor for virtualized computing, software-defined storage, and virtualized networking. They typically run on standard, off-the-shelf servers and multiple nodes can be clustered to create pools of shared compute and storage resources, designed for convenient consumption.The use of commodity hardware, supported by a single vendor, yields an infrastructure that's designed to be more flexible and simpler to manage than traditional enterprise storage infrastructure. For IT leaders who are embarking on data center modernization projects, hyperconvergence can provide the agility of public cloud infrastructure without relinquishing control of hardware on their own premises.To read this article in full, please click here

Marvell’s newest Arm processor integrates 5G hardware accelerators

In the battle between Intel and AMD, it can be easy to overlook Marvell Technology, but you shouldn’t. Through acquisition and organic growth, the company has turned into quite a powerhouse playing in multiple areas.Marvell is the first major vendor to support the Arm on 5G initiative that Arm unveiled last October, when it launched the Arm 5G Solutions Lab. The lab is designed to let hardware and software partners work on 5G-based products running on Arm architecture. Read more: SmartNICs set to infiltrate enterprise networksTo read this article in full, please click here

Multilink technology and big spectrum gains will drive Wi-Fi 7

Even as businesses continue to make the move to Wi-Fi 6, standards bodies and contributor companies are hard at work creating Wi-Fi 7, or 802.11be, the next generation of Wi-Fi technology that promises even greater capabilities than the latest in unlicensed wireless tech.A combination of new technologies focused on efficient spectrum usage and the recent FCC decision to make a huge swath of the airwaves available to Wi-Fi will push Wi-Fi 7’s peak throughput numbers as high as 40Gbit/s in certain configurations.Dorothy Stanley is the chair of the IEEE SA 802.11 working group. She said that the focus of the new standard is extremely high throughput, which is accomplished, in large part, by the wider channels enabled by the new availability of  6GHz spectrum (5.925 GHz to 7.125 GHz).To read this article in full, please click here

5 SD-WAN gotchas to avoid

Software-defined WANs (SD-WAN) are becoming key components of modern IT infrastructures. Because they use a centralized control function to securely direct network traffic over the Internet, they can deliver benefits such as increased application performance, better user experience and lower costs.SD-WAN technology simplifies the management and operation of a WAN by decoupling networking hardware from its control mechanism. As organizations look to support a hybrid workforce and cloud-native network architectures, SD-WAN infrastructure has become an important technology for enabling flexible, agile, and optimized connectivity.To read this article in full, please click here

Russia’s internet is still connected — but with stiff limits

Cyberwarfare has been become a prominent aspect of Russia's invasion of neighboring Ukraine, but the basic infrastructure connecting both countries to the internet has remained largely unaffected, even as the Russian government may be considering imposing new limitations on access to its domestic networks.Russian network operators continue to participate in peering agreements with transit providers, meaning that the physical infrastructure connecting Russia to the internet at large is still completely intact, according to a report from network intelligence and monitoring company ThousandEyes.Yet ThousandEyes head of internet intelligence and product marketing, Angelique Medina, said that DDoS attacks and self-imposed traffic restrictions may be making the on-the-ground experience of internet use in Russia somewhat complicated.To read this article in full, please click here

What is beamforming and how does it make wireless better?

While the concepts of beamforming have been around since the 1940s, the technology is currently playing a key role in improving modern wireless communication standards such as Wi-Fi and 5G. In combination with MU-MIMO technologies, beamforming helps users get more precise connections that boost their data speeds.What is beamforming? Beamforming is a technique that focuses a wireless signal towards a specific receiving device, rather than have the signal spread in all directions, like from a broadcast antenna. The resulting direct connection is faster and more reliable than it would be without beamforming.To read this article in full, please click here

Using ClamAV to detect viruses on Linux

One popular and easy-to-use tool for detecting virus infections on Linux systems is ClamAV. It's open source and free, and runs on many Linux systems, Ubuntu and Fedora included. In this post, we'll take a look at how to install and use the tool on Ubuntu, Linux Mint, and related systems. Installing ClamAV on Linux Mint The first step for installing ClamAV on Ubuntu, Mint, and related distros should be to update your system.$ sudo apt update && sudo apt upgrade -y After that, you can install ClamAV and verify the installation with commands like these:$ sudo apt-get install clamav clamav-daemon $ clamscan --version ClamAV 0.103.5/26469/Wed Mar 2 04:27:25 2-22 ClamAV commands ClamAV's tools are clamscan to do the scanning and freshclam to update the list of known virus signatures.To read this article in full, please click here

What’s next for Ethernet?

Higher, more cost-efficient speeds and getting better integration between IT and operational technology (OT) environments are two of the hottest areas of Ethernet development.That was on display this week at the Optical Fiber Communication conference where the Ethernet Alliance issued its latest Ethernet Roadmap, and a variety of vendors showed off the interoperability of the ubiquitous networking technology, now nearly 50 years old.What is SDN and where it's going “Ethernet is the most important thing in the world that no one ever sees,” said Peter Jones, chair of the Ethernet Alliance and distinguished engineer with the Enterprise, Data Center & IoT Networks group at Cisco.To read this article in full, please click here

Wi-Fi 6E scarcity has enterprises delaying upgrades until Wi-Fi 7 gear ships

Supply chain problems for Wi-Fi 6E access points are so bad that enterprises are skipping that version of wireless technology and waiting until Wi-Fi 7 equipment starts to ship late next year, says market researcher Dell'Oro Group.Wi-Fi 6E builds on Wi-Fi 6 by adding the the 6GHz band (5.925 GHz to 7.125 GHz), where, currently, there is a lot less traffic and much lower latency than in 2.4GHz and 5GHz bands that Wi-Fi 6. That extra bandwidth makes 6E a logical choice for latency-sensitive applications.But you can’t use something if you can’t buy it, and Dell'Oro says that based on its discussions with enterprises, 6E products are in very limited supply or unavailable.To read this article in full, please click here

Wireless growth, IoT and cars will drive semiconductor demand

The ongoing deployment of 5G networks, IoT and the automotive sector are the three biggest drivers of semiconductor revenue in the coming fiscal year, according to a new survey and analysis issued by KPMG.The accounting firm noted that semiconductor makers had shifted their organizational structures in response to those trends, with 53% of respondents reporting that they had increased their focus on specific operational requirements for hot applications — and away from general-use chipsets that can be used in multiple products.To read this article in full, please click here

Wireless growth, IoT, and cars will drive semiconductor demand

The ongoing deployment of 5G networks, IoT, and demand from the automotive sector are the three biggest drivers of semiconductor revenue in the coming fiscal year, according to a new survey and analysis issued by KPMG.The accounting firm noted that semiconductor makers had shifted their organizational structures in response to those trends, with 53% of respondents reporting that they had increased their focus on specific operational requirements for hot applications—and away from general-use chipsets that can be used in multiple products.To read this article in full, please click here

Verizon Business adds VMware SD-WAN to its managed services

Verizon Business has added VMware to its global managed-SD-WAN portfolio as part of its Network as a Service (NaaS) strategy. Verizon made the announcement at the Mobile World Conference event in Barcelona.Verizon’s Managed SD-WAN is designed for hybrid-cloud environments and uses application-aware routing to make sure customer data takes the right path to its destination. This allows customers to use their private network for demanding, latency-sensitive apps while sending less critical data over public networks.VMware SD-WAN features orchestration around centralized policy, monitoring, reporting, and analytics via Verizon Enterprise Center. It also offers SD WAN gateways with controllers. VMware Gateways are points of presencelocated around the world to provide physically close, low-latency connectivity to customer edge devices.To read this article in full, please click here

Gartner: SSE is SASE minus the SD-WAN

SASE adoption has been skyrocketing since the start of the pandemic. Secure access service edge, a term Gartner coined in 2019, combines security and networking in a single, scalable, cloud-based platform that fits well in a world in which employees work from home and mostly access cloud-based apps and services.Now Gartner is pushing a new acronym. Turns out, companies might prefer to get their SASE without the “A” — just security service edge, or SSE. Gartner this month published a Magic Quadrant for SSE (something the company never did for SASE); it's available from vendors listed in the report (here and here, for example).To read this article in full, please click here

Back to basics: Make sure VMs don’t exceed host capacity

At the agency where I work we recently bought software products that required new virtual machines, and that provided the opportunity to review some of the important basices of properly assigning the hardware memory and compute to each VM.That’s important so we stay in a failover-ready state, and in our environment, that means appropriately allocating resources of the two clustered physical hosts that run VMs for our production applications. It’s even more important now because the new software is particularly resource-intensive.What is a virtual machine? The task also provided the opportunity to review and adjust the resources assigned to all of our existing virtual servers so they, too, were properly sized.To read this article in full, please click here

ICANN denies Ukraine request to shut down Russian internet domains

The president and CEO of the Internet Corporation for Assigned Names and Numbers (ICANN) has denied a Ukrainian request that would have effectively cut the rest of the world off from Russian websites, as Russia's ongoing invasion of its neighbor entered its seventh day.In an open letter sent on March 2 to Ukrainian Deputy Prime Minister Mykhailo Fedorov, ICANN's Göran Marby said that the internet regulator has "globally agreed policies" that do not permit it to perform the requested actions, which included revocation of Russia's top-level .ru domain and SSL certificates, and the shutdown of root servers keeping large portions of the Russian internet accessible to the outside world.To read this article in full, please click here

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