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Category Archives for "Network World LAN & WAN"

Optical networking breakthrough will run networks 100x faster

Researchers reckon they could speed up the internet a hundredfold with a new technique that twists light beams within fiber optic cable rather than sending them in a straight path.“What we’ve managed to do is accurately transmit data via light at its highest capacity in a way that will allow us to massively increase our bandwidth,” Dr. Haoran Ren, of Australia’s RMIT University, said in a press release.[ Learn who's developing quantum computers. ] The corkscrewing configuration, in development over the last few years and now recently physically miniaturized, uses a technique called orbital angular momentum (OAM).To read this article in full, please click here

Users tell what you need to know about SD-WAN

Harrison Lewis wasn’t looking for SD-WAN, but he’s glad he found it.Northgate Gonzalez, which operates 40 specialty grocery stores throughout Southern California, had distributed its compute power for years. Each store individually supported applications with servers and other key infrastructure and relied on batch processing to deal with nightly backups and storage, according to Lewis, the privately held company’s CIO. More about enterprise SD-WAN: 10 hot SD-WAN startups to watch How SD-WAN saves $1.2M over 5 years for a radiology firm SD-WAN deployment options: DIY vs. cloud managed SD-WAN: What is it and why you’ll use it one day How to choose the right SD-WAN transport and why it matters Over time, the company’s needs changed, and it began centralizing more services, including HR and buying systems, as well as Microsoft Office, in the cloud or at the company’s two data centers. With this shift came a heavier burden on the single T-1 lines running MPLS into each store and the 3G wireless backup. Complicating matters, Lewis says, rainy weather in the region would flood the wiring, taking down terrestrial-network connectivity.To read this article in full, please click here

What is a firewall? How they work and all about next-generation firewalls

A firewall is a network device that monitors packets going in and out of networks and blocks or allows them according to rules that have been set up to define what traffic is permissible and what traffic isn’t.There are several types of firewalls that have developed over the years, becoming progressively more complex over time and taking more parameters into consideration when determining whether traffic should or should not be allowed to pass. The most modern are commonly known as next-generation firewalls (NGF) and incorporate many other technologies beyond packet filtering.[ Also see What to consider when deploying a next generation firewall. | Get regularly scheduled insights by signing up for Network World newsletters. ] Initially placed at the boundaries between trusted and untrusted networks, firewalls are now also deployed to protect internal segments of networks, such as data centers, from other segments of organizations’ networks.To read this article in full, please click here

IBM says buying Red Hat makes it the biggest in hybrid cloud

In a move that IBM says will make it the world’s leader in hybrid cloud, the company says it’s going to buy open-source giant Red Hat for $34 billion, banking on what it sees as Red Hat’s potential to become the operating system of choice for cloud providers.IBM says it expects growth in the use of cloud services to blossom in the coming years, with enterprises poised to expand from using cloud for inexpensive compute power to placing more applications in the cloud.[ Now see After virtualization and cloud, what's left on premises?] “To accomplish this, businesses need an open, hybrid cloud approach to developing, running and deploying applications in a multi-cloud environment,” IBM says in a written statement.To read this article in full, please click here

Arista joins Juniper, Cisco in 400G Ethernet race

Arista joined the parade toward high-speed Ethernet with new switches capable of supporting 400G speeds and aimed at hyperscale cloud and data-center networks.The Arista 7060X4 Series platforms are based on the Broadcom 12.8Tbps Tomahawk 3 silicon and feature 32 400G ports. Each 400G port can be split into four 100G ports for a total of 128 100G ports in a 1U chassis. Arista also enhanced its EOS operating system to better support traffic management, load balancing, buffering and routing for the high-speed boxes.   [ Related: MPLS explained -- What you need to know about multi-protocol label switching Over time, Ethernet speed transitions have been the primary driver for improving both the throughput and price-performance of data-center networks. 400G Ethernet is the next major transition on this journey, Andreas Bechtolsheim, Arista’s chief development officer, wrote in a blog about the announcement.To read this article in full, please click here

IDG Contributor Network: Self-healing SD-WAN removes the drama of high-availability planning

My humble beginnings Back in the early 2000s, I was the sole network engineer at a startup. By morning, my role included managing four floors and 22 European locations packed with different vendors and servers between three companies. In the evenings, I administered the largest enterprise streaming networking in Europe with a group of highly skilled staff.Since we were an early startup, combined roles were the norm. I’m sure that most of you who joined as young engineers in such situations could understand how I felt back then. However, it was a good experience, so I battled through it. To keep my evening’s stress-free and without any IT calls, I had to design in as much high-availability (HA) as I possibly could. After all, all the interesting technological learning was in the second part of my day working with content delivery mechanisms and complex routing.To read this article in full, please click here

Is the IoT in space about to take off?

Space may not be the final frontier for the Internet of Things, but evidence is mounting that it could be the technology’s next golden opportunity. While we’re still a ways away from the IoT in space becoming a commercially viable mainstream technology, a variety of companies are pushing the envelope in two significant ways.First, companies are working to realize the promise of satellite-powered networks that would bring the Internet of Things everywhere on earth. Second, vendors — and NASA — are exploring actual IoT applications and use cases beyond Earth’s atmosphere, in satellites and rockets.To read this article in full, please click here

The best enterprise level firewalls: Rating 10 top products

You know you need to protect your company from unauthorized or unwanted access. You need a network-security tool that examines the flow of packets in and out of the enterprise, governed by rules that decide whether that flow is safe, malicious or questionable and in need of inspection. You need a firewall.To read this article in full, please click here(Insider Story)

How we selected 10 hot business continuity startups to watch

The selection process for our business-continuity-startup roundup began with dozens of recommendations and nominations sent via HARO, LinkedIn, Twitter, and subscribers to the Startup50 email newsletter.This roundup, however, was challenging to flesh out because in the IT world, business continuity is a subset of storage.[ Check out 10 hot storage companies to watch. | Get regularly scheduled insights by signing up for Network World newsletters. ] Plenty of vendors pitched DevOps, security, and networking companie but none of those were a good fit for business continuity. You could make a case that all of those things help ensure business continuity, but they all fit better in different categories.To read this article in full, please click here

Tech calendar 2018-19: Upcoming events of interest to IT pros

Tech Events Event Description Starts Ends Location AWS re:Invent AWS Re:invent is Amazon's opportunity to update IT and business leaders on the latest features of its cloud service.The event features keynote announcements, training and certification opportunities, access to more than 2,000 technical sessions, a partner expo, and more. 2018-11-26 2018-11-30 Las Vegas, NV IT Roadmap This one-day event focused on powering the agile enterprise looks at the latest approaches to make IT more responsive, nimble, and robust. 2018-12-06 2018-12-06 Washington, D.C. SXSW Covering everything from entertainment to entrepreneurship, this sprawling conference has tracks dedicated to Tech Industry & Enterprise, Coding & Development, Blockchain & Cryptocurrency, Health & Medtech, and VR/AR/MR. 2019-03-08 2019-03-17 Austin, TX Enterprise Connect Aimed at companies looking to upgrade or replace legacy systems or deploy and integrate next-gen communications and collaboration systems, services, apps and networks. 2019-03-18 2019-03-21 Orlando, FL Google Cloud Next Google Cloud Next is where the company announces all the latest updates to the Google Cloud Platform. The conference also offers educational, networking and hands-on opportunities for its more than 10,000 attendees. 2019-04-09 2019-04-11 San Francisco, CA Computex Taipei Based in Asia, this massive technology trade show and expo focuses on information Continue reading

What is a private cloud? [ And some things that it’s not]

Private cloud is a well-defined term that government standards groups and the commercial cloud industry have pretty much agreed upon, and while some think its use is waning, recent analysis indicates that spending on private cloud is still growing at a breakneck pace.A study by IDC projects that sales from private-cloud investment hit $4.6 billion in the second quarter of 2018 alone, which is a 28.2 percent increase from the same period in 2017.[ Also see How to plan a software-defined data-center network and Efficient container use requires data-center software networking.] So why are organizations attracted to private cloud?To read this article in full, please click here

What is a private cloud? [ And some things that it’s not ]

Private cloud is a well-defined term that government standards groups and the commercial cloud industry have pretty much agreed upon, and while some think its use is waning, recent analysis indicates that spending on private cloud is still growing at a breakneck pace.A study by IDC projects that sales from private-cloud investment hit $4.6 billion in the second quarter of 2018 alone, which is a 28.2 percent increase from the same period in 2017.[ Also see How to plan a software-defined data-center network and Efficient container use requires data-center software networking.] So why are organizations attracted to private cloud?To read this article in full, please click here

IDG Contributor Network: Introducing Named Data Networking

While computing, storage and programming have dramatically changed and become simpler and cheaper over the last 20 years, however, IP networking has not. IP networking is still stuck in the era of mid-1990s.Realistically, when I look at ways to upgrade or improve a network, the approach falls into two separate buckets. One is the tactical move and the other is strategic. For example, when I look at IPv6, I see this as a tactical move. There aren’t many business value-adds.In fact, there are opposites such as additional overheads and minimal internetworking QoS between IPv4 & v6 with zero application awareness and still a lack of security. Here, I do not intend to say that one should not upgrade to IPv6, it does give you more IP addresses (if you need them) and better multicast capabilities but it’s a tactical move.To read this article in full, please click here

Juniper advances network automation community, skillsets

Juniper is positioning the company to be an evangelist for network automation by announcing applications, tools, labs and libraries that it says will hasten adoption the technology for businesses and network professionals.The inherent role of automation is to reduce the daily toil of repetitive tasks that lead to mistakes. It also provides guardrails to ensure service-level agreement guarantees. SLAs and reliability are not left to caffeine-powered individual heroics, but are achieved through well-trained automation heroes, also known as network reliability engineers (NRE), wrote Juniper CTO and vice president, Bikash Koley in a blog about the announcement. To read this article in full, please click here

How to boost Wi-Fi performance: Experts talk planning, troubleshooting

With wireless now the preferred, default, and increasingly only access in the majority of in-building, campus, metro-scale hotspot and wide-area settings, achieving optimal performance is a key objective for IT departments.Since radio-frequency (RF) propagation always involves a high degree of variability, it’s often difficult to predict the precise behavior of a given installation. Variables include operating conditions, user and application traffic demands, and the capabilities and settings of individual vendor products. When mobility, Wi-Fi testing and verification are also taken into consideration, performance evaluation can become very complex indeed.To read this article in full, please click here

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