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Category Archives for "Network World SDN"

Navigating your way around the Linux file system

One of the first things Linux users need to learn is how to move around the Linux file system and, eventually, how to make it even easier to move around the file system. This post describes both the basic commands you need and some smart moves to make navigating easier.Absolute and relative paths Before we get moving, it’s important to understand the difference between absolute paths (like /home/jdoe) and relative paths (like images/photos and ..). Absolute paths always begin with a / that, of course, represents the base of the file system. If the specified path doesn’t start with a /, it’s relative. Here are some examples of both relative and absolute paths:To read this article in full, please click here

4 activities that lead to human error in network operations

You might have been alarmed to read recently that half of all network problems are due to human error. Well, bad news. That’s true of the number of problems. If you look at the hours of degraded or failed operation, three-quarters of all of it is due to human error. Furthermore, the great majority of degraded or failed operation can be traced to four specific activities: Fault analysis and response, which network professionals and their management say creates 36% of error-induced outage time Configuration changes (attributed to 27% of error-induced outage time) Scaling and failover tasks (attributed to 19% of error-induced outage time) Security policies (attributed to 18% of error-induced outage time) Not surprisingly, network professionals are eager to find remedies for each of the four primary culprits. Before that can happen, it’s important to understand why the human error occurs.To read this article in full, please click here

Human error in network operations and how to deal with it

You might have been alarmed to read recently that half of all network problems are due to human error. Well, bad news. That’s true of the number of problems. If you look at the hours of degraded or failed operation, three-quarters of all of it is due to human error. Furthermore, the great majority of degraded or failed operation can be traced to four specific activities: Fault analysis and response, which network professionals and their management say creates 36% of error-induced outage time Configuration changes (attributed to 27% of error-induced outage time) Scaling and failover tasks (attributed to 19% of error-induced outage time) Security policies (attributed to 18% of error-induced outage time) Not surprisingly, network professionals are eager to find remedies for each of the four primary culprits. Before that can happen, it’s important to understand why the human error occurs.To read this article in full, please click here

There’s more to more than meets the eye

The Linux more command is a fairly obvious command to use when you want to scan through a text file a screen at a time, but there still might be quite a few things you don’t know about this command. For one thing, you don’t have to start at the top of the file if you don’t want to. Add an argument like +20 and you will start with the 20th line in the file with a command like that shown below.$ man +20 myfile Note that the more command automatically adjusts itself to the number of lines in your terminal window. In addition, the last line displayed will not be a line from the file by default, but an indication of what percentage of the text has been displayed thus far – at least if there’s more text to follow. It will look like this:To read this article in full, please click here

Micron launches CXL 2.0 memory expansion modules

Micron has introduced memory expansion modules that support the 2.0 generation of Compute Express Link (CXL) and come with up to 256GB of DRAM running over a PCIe x8 interface.CXL is an open interconnect standard with wide industry support that is meant to be a connection between machines allowing for the direct sharing of contents of memory. It is built on top of PCI Express for coherent memory access between a CPU and a device, such as a hardware accelerator, or a CPU and memory.PCIe is normally used in point-to-point communications, such as SSD to memory, while CXL will eventually support one-to-many communication. So far, CXL is capable of simple point-to-point communication only.To read this article in full, please click here

Supply chain improvements, AI demand propel Cisco earnings

Networking giant Cisco’s final quarter of fiscal 2023 was a surprising success, as an easing of the supply chain crisis enabled the company to fulfill back orders and increase quarterly revenue by 16% year over year, reaching a total of $15.2 billion.Cisco’s said that total software-related revenue was up 17% year on year, and revenue from software subscription services rose 20%. That’s part of what the company refers to as its business model transformation, as slack overall demand for collaboration technology resulting from the easing of the pandemic creates the need for Cisco to target new types of business.Net income for the quarter jumped 41% year over year to $4 billion.To read this article in full, please click here

BrandPost: Why working from home just got better (Hint: it’s your Wi-Fi)

By: Gayle Levin, Senior Product Marketing Manager for Wireless at HPE Aruba Networking. Whether we work from home every day or just occasionally, we’ve grown accustomed to blaming the network for poor performance. There’s an ethos of “we just have to deal with it because it’s part of working remotely.” But dealing with it day after day gets old. That’s why I’m so excited about the new HPE Aruba Networking Access Points, designed to make working from home more efficient. They’re designed to conveniently fit on the desktop and can be managed using HPE Aruba Networking Central’s capabilities. Central includes dashboards that provide WAN health insights, enabling IT to troubleshoot issues whether they are due to the corporate network, applications, or even public ISPs.To read this article in full, please click here

Data replication works best when combined with robust backups

Data replication has stood the test of time, providing organizations with a reliable means of safeguarding critical information for decades. Replication creates redundant copies of vital data, ensuring its availability and resiliency in case of disasters or system failures. In this article, I will explore the intricacies of data replication, examining its fundamental components, types, and potential limitations.Data replication starts with the selection of a source volume or filesystem that needs protection. This source volume might be a virtual disk, often referred to as a LUN (logical unit number), sourced from a storage array or volume manager. It may also take the form of a filesystem. Replication can occur either at the block level, a common practice due to its efficiency, or at the filesystem level, although the latter tends to be less favored for its relatively inferior performance.To read this article in full, please click here

Red Hat rivals form Open Enterprise Linux Association

Three of Red Hat’s chief enterprise Linux competitors are banding together to create an alternative to Red Hat-based software, after the company made changes to its terms of use earlier this summer, making it more difficult to access its source code.Oracle, SUSE, and CIQ, in a joint statement issued Thursday, said that the new Open Enterprise Linux Association will “encourage the development” of Linux distributions compatible with Red Hat Enterprise Linux by providing free access to source code.“With OpenELA, CIQ, Oracle and SUSE join forces with the open source community to ensure a stable and resilient future for both upstream and downstream communities to leverage Enterprise Linux,” said CIQ CEO Gregory Kurtzer, in the statement.To read this article in full, please click here

Cisco bolsters mobile core technology with Working Group Two buy

Cisco continued filling its shopping bag with various technology firms – this time saying it intended to acquire cloud native mobile core developer Working Group Two (WG2) for an undisclosed amount.The WG2 buy is Cisco’s fifth since June and its nineth this year.  WG2 is known for its mobile technology that helps public and private service providers and enterprise customers build secure and scalable mobile backbones.The technology will become part of Cisco’s Mobility Services platform which offers a full-stack cloud-native converged core network and distributed edge support.Introduced in February, the Mobility Service is designed to simplify how service providers build, manage, and deliver new mobile services globally at scale and supports a variety of technologies to bring 5G, edge, and cloud technologies, Cisco says.To read this article in full, please click here

Nvidia flexes generative AI muscle at SIGGRAPH with new GPUs, development software

Looking to solidify its position as the dominant global supplier of chips that support generative AI workoads, Nvidia announced new GPUs and servers as well as a range of new software offerings at the SIGGRAPH conference in Los Angeles this week.On the hardware side, Nvidia announced a new line of servers, the OVX series. The server line is designed to use up to eight of the company’s L40S GPUs. The GPUs are based on the company's Ada Lovelace architecture, which succeeded Ampere as the microarchitecture in use in its main line graphics cards. Each L40S packs 48GB of memory and is designed with complex AI workloads in mind, boasting 1.45 petaflops of tensor processing power.To read this article in full, please click here

HPE teams with PhoenixNAP for bare metal cloud offerings

IT cloud services provider PhoenixNAP is expanding its bare metal cloud offerings by deploying HPE ProLiant servers with Ampere’s Arm-based server processors rather than x86 chips.Ampere, the chip startup founded by former Intel executive Renee James, makes Arm-based server processors specifically for cloud use. It doesn't use multithreading in its chips, unlike Intel and AMD, because it feels performance is not consistent across threads. Rather, it goes for core count, delivering chips that have 80 to 128 cores.The new server, the HPE ProLiant RL300 Gen11, is a cloud-native server designed for service providers and enterprises. HPE says it offers improved compute performance and energy savings over x86 systems.To read this article in full, please click here

Pipes and more pipes on Linux

Most people who spend time on the Linux command line move quickly into using pipes. In fact, pipes were one of the things that really got me excited when I first used the command line on a Unix system. My appreciation of their power and convenience continues even after decades of using Linux. Using pipes, I discovered how much I could get done by sending the output of one command to another command, and sometimes a command after that, to further tailor the output that I was looking for. Commands incorporating pipes – like the one shown below – allowed me to extract just the information that I needed without having to compile a program or prepare a script.To read this article in full, please click here

TSMC, NXP, Infineon and Bosch team up for German chip foundry

TSMC, Robert Bosch, Infineon and NXP will partner to form a new firm, the European Semiconductor Manufacturing Company, and open a nearly $11 billion chipmaking facility in Germany.ESMC, as the company will be known, will be aimed at providing necessary silicon for the automotive and industrial sectors, according to a statement issued Tuesday. The planned facility, which will be located in Dresden, will be able to produce 40,000 300mm silicon wafers per month, with each wafer able to produce hundreds of chips, depending on their specific design.The facility will use TSMC’s 28/22nm planar CMOS technology for larger semiconductor nodes, as well as 16/12 FinFET process for smaller ones. CMOS stands for complementary metal-oxide semiconductor, and is an older and more established fabrication technique, whereas FinFET, or fin field-effect transistor, enables the production of faster and more advanced processors.To read this article in full, please click here

Aruba plugs core enterprise SASE, SSE service protection directions

Aruba Networks is showing off some enhancements to its security platform – including new zero trust and sandboxing features – that promise to help customers advance fortification of their hybrid cloud and enterprise network environments.Hewlett Packard Enterprise’s network subsidiary is also detailing the progress it has made in integrating the security technology from its March purchase of Axis Security into Aruba’s security service edge (SSE) platform with Aruba's SD-WAN and Secure Access Services Edge (SASE) offerings.Some of the new features and directions will be demoed and discussed as part of Aruba’s presence at this week’s Black Hat 2023 event which will focus on everything security including AI, automation and threat intelligence issues.To read this article in full, please click here

BrandPost: What’s the state of SASE?

By: Eve-Marie Lanza, Senior Security Solutions Marketing Manager at HPE Aruba Networking. SASE adoption among organizations is on the rise, according to research independently conducted by leading security research firm Ponemon Institute, sponsored by Hewlett Packard Enterprise.In the report, The 2023 Global Study on Closing the IT Security Gap: Addressing Cybersecurity Gaps from Edge to Cloud, 30% of organizations indicate they have adopted the Secure Access Service Edge (SASE) architecture. Nearly the same amount (29%) plan to deploy SASE.To read this article in full, please click here

Remote working turbocharged: How WAN Optimization unlocks next-level productivity for remote workers

According to a 2022 survey by McKinsey , 58% of Americans have the opportunity to work from home at least one day a week. This trend is accelerating a shift from traditional IT solutions to cloud-based alternatives that are better suited to supporting a distributed workforce. Gartner predicts that enterprise IT spending on public cloud computing will overtake spending on traditional IT in 2025 in four key market segments.  To read this article in full, please click here

Who is selling Zero Trust Network Access (ZTNA) and what do you get?

The last few years have seen an explosion of interest in Zero Trust Network Access (ZTNA). The zero trust approach replaces the perimeter defense model with a "least privilege" framework where users authenticate to access specific data and applications, and their activities are continuously monitored.ZTNA gained a boost in the wake of the COVID-19 pandemic, with more employees working remotely. The old perimeter defense model, exemplified by VPNs, provides a secured internet connection that gives remote users privileges as if they were on an internal private network. This doesn't match up with a zero trust mindset; and to make things worse, many organizations found that their infrastructure couldn't handle the traffic loads created by large numbers of remote workers connecting via VPN. To read this article in full, please click here

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