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Category Archives for "Network World SDN"

Weekly internet health check, US and worldwide

The reliability of services delivered by ISPs, cloud providers and conferencing services (a.k.a. unified communications-as-a-service (UCaaS)) is an indication of how well served businesses are via the internet.ThousandEyes is monitoring how these providers are handling the performance challenges they face. It will provide Network World a roundup of interesting events of the week in the delivery of these services, and Network World will provide a summary here. Stop back next week for another update, and see more details here. Get regularly scheduled insights by signing up for Network World newsletters To read this article in full, please click here

Checking exit codes in bash

There are quite a few exit codes used on Linux systems, though no listing you can display when you’re feeling curious. In fact, you won’t see the numeric codes unless you specifically ask for them.Instead, you will see a textual description of the problem you encountered—such as “No such file or directory”—in a context like this:$ bin/runme bash: bin/runme: No such file or directory [ Get regularly scheduled insights by signing up for Network World newsletters. ] If you want to see the numeric exit code, you can use the echo $? command. The error message will tell you that there is no “runme” script in your bin directory. The echo $? command will respond with only a number.To read this article in full, please click here

Microsoft adds virtual cores to Windows Server licensing

Microsoft has announced a major update to its Windows Server licensing program, which in part was driven by threats of legal action by the European Union.The most notable change is adding the option of licensing Windows Server based on virtual cores in addition to the current option of paying based on the number of physical processor cores in host machines. [ Get regularly scheduled insights by signing up for Network World newsletters. ] “Today, Windows Server is licensed by physical core, which means customers must have access to the physical server hardware to ensure that they have enough Windows Server licenses to cover all physical cores in the machine,” wrote Nicole Dezen, Microsoft’s chief partner officer, in  a blog post.To read this article in full, please click here

FCC urged to test for ‘dangerous’ interference from Wi-Fi 6E

The National Spectrum Management Association this week warned the Federal Communications Commission that Wi-Fi 6E could cause potentially dangerous interference in networks used by first responders, utilities and others if the FCC doesn’t perform“real-world testing on its automated frequency control systems.NSMA argued in an open letter to the commission that testing facilities are already available, specifically at the Idaho National Labs spectrum test bed, and that such studies should be peer-reviewed and transparent. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

McLaren Racing relies on edge computing at the racetrack’s edge

“Twenty-two times a year, we build a data center right down at the edge,” said Ed Green, head of commercial technology at McLaren Racing, a British motor racing team based in Surrey, England.For McLaren, the edge is wherever in the world the company’s Formula 1 racing team is competing. An IT setup at each racing site links the entire team, including mechanics, engineers, crew members, and the drivers of McLaren’s two Formula 1 racecars. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

US government blocks sale of some Nvidia and AMD AI chips to China

The US government has banned AMD and Nvidia from exporting chips used to support artificial intelligence work to China.The ban affects Nvidia’s A100 chips, often deployed in data centers to speed up the training of machine learning models, and its forthcoming H100 chip, while AMD has also received new license requirements that will stop its MI250 advanced AI chip from being exported to China.In a filing with the SEC, Nvidia said: “The US government has imposed a new license requirement, effective immediately, for any future export to China (including Hong Kong) and Russia of the Company’s A100 and forthcoming H100 integrated circuit.”To read this article in full, please click here

US blocks sale of some Nvidia and AMD AI chips to China

The US government has banned AMD and Nvidia from exporting chips used to support artificial intelligence work to China.The ban affects Nvidia’s A100 chips, often deployed in data centers to speed up the training of machine learning models, and its forthcoming H100 chip, while AMD has also received new license requirements that will stop its MI250 advanced AI chip from being exported to China.In a filing with the SEC, Nvidia said: “The US government has imposed a new license requirement, effective immediately, for any future export to China (including Hong Kong) and Russia of the Company’s A100 and forthcoming H100 integrated circuit.”To read this article in full, please click here

Palo Alto Networks bulks-up its SASE portfolio

Palo Alto Networks is reinforcing the security and operational features of its Prisma secure-access service edge (SASE) package.New features include the ability to adjust security settings for multiple software-as-a-service-based apps, new security capabilities, and AIOPs support. In addition the company is expanding its family of Ion SD-WAN security devices to provide additional configuration options. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

Cloud networking certifications: Which one is right for you?

For network professionals looking to advance their career, cloud certifications can lead to more employment opportunities at higher salaries. In fact, the most in-demand certification across all of IT for 2022 is the entry level AWS Certified Cloud Practitioner, according to the latest report from recruiting firm Robert Half.A credential can be exceptionally beneficial because it allows holders to demonstrate that they understand complex network designs and are able to help their organizations achieve business objectives in the cloud, says Ruby Nahal, cloud architect at Mission Cloud Services, a managed services provider.To read this article in full, please click here

Cloud networking certs: Which is right for you?

For network professionals looking to advance their career, cloud certifications can lead to more employment opportunities at higher salaries. In fact, the most in-demand certification across all of IT for 2022 is the entry level AWS Certified Cloud Practitioner, according to the latest report from recruiting firm Robert Half.A credential can be exceptionally beneficial because it allows holders to demonstrate that they understand complex network designs and are able to help their organizations achieve business objectives in the cloud, says Ruby Nahal, cloud architect at Mission Cloud Services, a managed services provider.To read this article in full, please click here

BrandPost: The Numbers Don’t Lie: Apstra Delivers Major Savings in Data Center Operations

At Juniper Networks, we know that Juniper Apstra provides superior benefits to customers over the entire data center lifecycle, from Day 0 design and planning, to Day 1 deployment, through Day 2+ and ongoing operations. The problem? An assertion coming from a vendor sounds too salesy, even if our suspicions are right. So, we ran a detailed analysis through a third party, and it turns out, if anything, the results suggest we’ve been underselling the value Apstra can deliver. This blog is designed to walk through the findings. The conclusion? Those that aren’t shortlisting Juniper in the data center are likely leaving money – and capability – on the table.To read this article in full, please click here

BrandPost: The Numbers Don’t Lie: Apstra Delivers Major Savings in Data Center Operations

At Juniper Networks, we know that Juniper Apstra provides superior benefits to customers over the entire data center lifecycle, from Day 0 design and planning, to Day 1 deployment, through Day 2+ and ongoing operations. The problem? An assertion coming from a vendor sounds too salesy, even if our suspicions are right. So, we ran a detailed analysis through a third party, and it turns out, if anything, the results suggest we’ve been underselling the value Apstra can deliver. This blog is designed to walk through the findings. The conclusion? Those that aren’t shortlisting Juniper in the data center are likely leaving money – and capability – on the table.To read this article in full, please click here

BrandPost: What’s the Difference Between SASE, SD-WAN, and SSE?

By: Derek Granath, Senior Director, SD-WAN Product and Technical Marketing at Aruba, a Hewlett Packard Enterprise company.A Quick History LessonBelieve it or not, the term Software-defined Wide Area Network (SD-WAN) was first introduced back in 2014, practically ancient history when it comes to networking at the edge. It’s now well recognized and increasingly adopted as the cloud-first way to transform WAN architecture, improving application performance, enabling more efficient connectivity, and reducing network complexity.Secure Access Service Edge, known as SASE, describes the cloud-first architecture for both WAN and security functions, all delivered and managed in the cloud. In short, SASE is a blend of SD-WAN and cloud-delivered security.To read this article in full, please click here

Cisco DevNet certifications explained

The enterprise network is undergoing a fundamental transition from manual to automated, from hardware to software-defined, from tightly controlled to sprawling across SaaS, multi-cloud, remote work and IoT environments.Network professionals are expected to not only extend existing functionality across all of those environments, they must elevate the capabilities of the network to enable digital transformation. That means building a network that’s more agile, resilient, secure, scalable, observable and intelligent.To read this article in full, please click here

How to find files on Linux and make it easy to find them again

The cd command makes it easy to switch to another directory on Liniux, but only if you know where you’re heading. In this post, I discuss a couple of tricks for moving between known locations and provide a script for finding and “remembering” files or locations that you might want to reuse.One of the easiest things to do with the cd command is return to your home directory regardless of where you are sitting in the file system at the moment. Just type cd by itself, and you’ll be back in your home directory. Typing cd ~ will do the same thing, though adding the tilde won’t get you there any faster.To read this article in full, please click here

Cisco backlog still looms

Like many of its competitors, Cisco’s quarterly and year-end financial results show the good and bad of the current economy—a record of new product orders alongside record backlogged orders.Cisco reported that for the period ending July 30, its quarterly revenue was basically flat year-over-year at $13.1 billion, but revenue for the 2022 fiscal year was up three percent to $51.6 billion.   [ Get regularly scheduled insights by signing up for Network World newsletters. ] “Full year product orders and backlog are both at record highs,” Cisco’s CEO Chuck Robbins said in a written statement before the company’s quarterly and year-end Wall Street phone briefing.To read this article in full, please click here

How to set up DHCP failover on Windows Server

Redundancy is essential for dealing with both planned and unplanned outages, and that includes having redundant dynamic host-configuration protocol (DHCP) servers to allow uninterrupted dynamic assignment of IP addresses.For those working in Windows environments, there are currently two options for setting up redundant DHCP servers: a failover scenario with a main server paired with another in hot standby; and a load-balancing scenario in which two DHCP servers actively handle client requests. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

Cloud environments challenge network visibility

Network visibility is getting murkier, and enterprises are investing in tools to cut through the fog, tighten security, and boost IT pros’ productivity.A majority (78%) of companies plan to increase their spending on network visibility tools over the next two years, according to Shamus McGillicuddy, vice president of research at Enterprise Management Associates (EMA). Traffic growth is the main impetus, due in large part to adoption of hybrid and multi-cloud architectures.Other factors driving the need for better visibility include increases in east-west data center traffic and greater use of encryption by bad actors to hide malicious traffic.To read this article in full, please click here

7 ways to fight network tool sprawl

Tool sprawl is a daunting problem that plagues enterprise IT everywhere you look, from data center operations to cybersecurity to network reliability to application performance.Tool sprawl occurs when organizations acquire licenses (or not, in the case of open source) for multiple tools that tackle related, but not completely overlapping, issues. Layered security is the most obvious example of this, but the problem bedevils networking, DevOps, cloud teams, etc.To read this article in full, please click here

The simplicity and complexity of using quotes on Linux

There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.Echoing text The echo command doesn’t require any variety of quote characters much of the time. You can echo a phrase like this without bothering with quotes of any kind.To read this article in full, please click here

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