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Category Archives for "Networking"

Bash scripting tips that can save time on Linux

Committing routine and even rarely required tasks to scripts is almost always a big win because you don’t have to reinvent the approach to getting work done each time it’s needed, and you save a lot of time on issues you handle often.Here are some tips for writing bash scripts and ensuring that they’ll be easy to use, easy to update/ and hard to misuse.Comments One important thing to do when you're preparing a script on Linux is to add comments – especially for commands that might be a little complex. If you don’t run a script very often, comments can help ensure that you quickly grasp everything that it’s doing. If someone else has to use your scripts, the comments can make it a lot easier for them to know what to expect. So, always add comments. Even you might appreciate them! You don’t need to comment every line, just every significant group of commands. Here's a simple example.To read this article in full, please click here

Multicloud: Keep providers separate and distinct or integrate them?

Most organizations use both on-prem data centers and cloud-based IaaS services, often employing multiple IaaS platforms.For some, this multicloud reality has come about as part of a steady, one-way migration to the cloud, and they may have intentionally kept their cloud networks distinct as part of that goal. Others may have a business strategy for keeping them distinct, such as providing services for a stand-alone division or a particular geography.As a consequence, they are almost certainly already tying their on-premises and cloud infrastructure networks together in some way or are about to be.Those with limited integration among their networks are often dealing with a patchwork of solutions that evolved haphazardly as cloud systems went from being experimental and isolated to being developmental and peripheral and then to being central and in-production.To read this article in full, please click here

12 Practical Tips for Entry-level Job Seeker and Interns in Tech

It’s been almost 25 long years since I started my bachelor’s degree, some 17 years since I began my master’s degree, and around 15 years since I decided to leave a Ph.D. scholarship behind and go back to full-time professional work. Many things have changed, yet one thing has remained the same: the race among […]

The post 12 Practical Tips for Entry-level Job Seeker and Interns in Tech appeared first on Packet Pushers.

Discover Cloud Networking and Security with VMware at Mobile World Congress 2023

They say you should work smarter, not harder. We agree, which is why we’ll be showcasing work at MWC 2023 that brings efficiency and intelligence to modern networking designed to help businesses thrive in the digital era through telco-friendly, smarter networking solutions.

Keep reading for a preview of what to expect from the VMware Networking and Security team at the event – and join us in person in Hall 3, stand 3M11, to check out the latest innovations in cloud networking and security for yourself.

Smarter, More Efficient Networks

The overall vision that we’ll be displaying in Barcelona at Mobile World Congress from February 27 to March 2 focuses on two key concepts – increasing network efficiency and generating value through smart networking solutions.

Specifically, we’ll be displaying:

  • Technology that enhances the Telco Efficiency of Communications Service Provider networks by guiding customers in boosting network density and reducing energy usage. Visit our booth to learn how optimizing the technology stack helps cut costs and enhance service flexibility.
  • Solutions for building Smarter Networks by leveraging breakthroughs in RAN to Edge to Core Networks and creating programmable settings that Communications Service Providers can leverage to provide advanced next-generation services. These elevated service Continue reading

Broadcom, VMware extend deadline to complete acquisition by 90 days

Software and semiconductor maker Broadcom and its acquisition target VMware have agreed to give themselves another 90 days to complete the $61 billion acquisition they announced on May 26, 2022.  A regulatory filing by enterprise cloud vendor VMware showed that both the companies had delivered a mutual notice to extend the final date of the merger to twelve months from the day the deal was announced.To read this article in full, please click here

Broadcom, VMware extend deadline to complete acquisition by 90 days

Software and semiconductor maker Broadcom and its acquisition target VMware have agreed to give themselves another 90 days to complete the $61 billion acquisition they announced on May 26, 2022.  A regulatory filing by enterprise cloud vendor VMware showed that both the companies had delivered a mutual notice to extend the final date of the merger to twelve months from the day the deal was announced.To read this article in full, please click here

Why Aren’t There More Technical MBAs?

This weekend I was listening to the latest episode of the Art of Network Engineering podcast featuring Russ White. Russ is one of those guests that has a breadth of knowledge outside of technology that colors the way he looks at things in the realm of enterprise IT. Plus he’s a fun interview.

One of the questions he asked was around the idea of technical MBAs. For those that might not know, MBA stands for Masters of Business Administration, which is a post-graduate college business degree. An MBA is widely regarded as a way to put yourself on a track to be a manager for a company in some capacity. An MBA is punching a ticket to be a future CEO. Why does it seem like the number of MBAs coming out of prestigious business schools don’t have a technical background then?

Where the Action Is

I’m going to quote liberally from a book I’ve been reading called The Personal MBA by Josh Kaufman. In it, Kaufman lays out the reasoning behind using his book to study the principles behind the information given in MBA classes instead of spending $200,000 to go to a business school for two years for Continue reading

Start Multiple netlab Labs on the Same Server

A heavy netlab user sent me an email along these lines:

We’re running multiple labs in parallel on the same server, and we’re experiencing all sorts of clashes like overlapping management IP addresses. We “solved” that by using static device identifiers in our labs, but I’m wondering if there’s a better way of doing it?

That’s exactly the sort of real-life challenges I love working on, so it wasn’t hard to get me excited, and the results are bundled in netlab release 1.5.

Read more …

Start Multiple netlab Labs on the Same Server

A heavy netlab user sent me an email along these lines:

We’re running multiple labs in parallel on the same server, and we’re experiencing all sorts of clashes like overlapping management IP addresses. We “solved” that by using static device identifiers in our labs, but I’m wondering if there’s a better way of doing it?

That’s exactly the sort of real-life challenges I love working on, so it wasn’t hard to get me excited, and the results are bundled in netlab release 1.5.

Read more …

Weekend Reads 021723


In Emoi Services LLC v. Owners Insurance Company, the Ohio Supreme Court recently found software is an intangible item that cannot experience direct physical loss or damage and, therefore, the plaintiff’s inability to access or use its software during a ransomware attack was outside the scope of its “businessowners” policy.


Searching Google for downloads of popular software has always come with risks, but over the past few months, it has been downright dangerous, according to researchers and a pseudorandom collection of queries.


Here’s a provocative question: Is it possible, given the vast array of security threats today, to have too many security tools?


This debate has proved futile for two reasons. First, the characteristics of any specific application will dictate which venue is more expensive — there is no simple, unequivocal answer. Second — the question implies that a buyer would choose a cloud or on-premises data center primarily because it is cheaper. This is not necessarily the case


The RISC-V architecture looks set to become more prevalent in the high performance computing (HPC) sector, and could even become the dominant architecture, at least according to some technical experts in the field.


Major US carriers are exaggerating the availability Continue reading

Worth Reading: On ChatGPT

One of the best descriptions of what ChatGPT does and what it cannot do I found so far comes from an ancient and military historian. The what is ChatGPT and what is an essay parts are a must-read, the preparing to be disrupted conclusion is pure gold:

I do think there are classrooms that will be disrupted by ChatGPT, but those are classrooms where something is already broken.

I can’t help but think of the never-ending brouhaha about exam brain dumps.

Read more …

Worth Reading: On ChatGPT

One of the best descriptions of what ChatGPT does and what it cannot do I found so far comes from an ancient and military historian. The what is ChatGPT and what is an essay parts are a must-read, the preparing to be disrupted conclusion is pure gold:

I do think there are classrooms that will be disrupted by ChatGPT, but those are classrooms where something is already broken.

I can’t help but think of the never-ending brouhaha about exam brain dumps.

Read more …

Heavy Networking 666: Improving Quality Of Experience With LibreQoS

Welcome to Heavy Networking! In this episode we discuss LibreQoS, a free and open source software project to help ISPs improve network latency and responsiveness and improve the Quality of Experience (QoE) for their customers. That project is LibreQoS, and it's being used by ISPs and others to ensure stable latency across networks.

The post Heavy Networking 666: Improving Quality Of Experience With LibreQoS appeared first on Packet Pushers.

The Future Of DPUs In IT Infrastructure – Packet Pushers Livestream With Dell Technologies – Video

Data Processing Units (DPUs) describe the next generation of SmartNICs. They enhance the simple NIC with compute and memory and they have an operating system to host applications and APIs for system call offloads. DPUs can accelerate networking, security, and storage capabilities on servers while preserving CPU resources for applications. The Packet Pushers hosted a […]

The post The Future Of DPUs In IT Infrastructure – Packet Pushers Livestream With Dell Technologies – Video appeared first on Packet Pushers.

What David Flanagan Learned Fixing Kubernetes Clusters

People are mean. That’s one of the first things David Flanagan learned by fixing 50+ deliberately broken Kubernetes clusters on his YouTube series, “Klustered.” In one case, the submitter substituted a ‘c’ character with a unicode doppleganger — it looked identical to a c on the terminal output — thus causing an error that led to Flanagan doubting himself and his ability to fix clusters. “I really hate that guy,” Flanagan confided at the Civo Navigate conference last week in Tampa. “That was a long episode, nearly two hours we spent trying to fix this. And what I love about that clip — because I promise you, I’m quite smart and I’m quite good with Kubernetes — but it had me doubting things that I know are not the fault. The fact that I thought a six digit number is going to cause any sort of overflow on a 64 bit system — of course not. But debugging is hard.” After that show, Klustered adopted a policy of no Unicode breaks. “You only learn when things go wrong,” Flanagan said. “This is why I really love doing Klustered. If you just have a cluster that just works, Continue reading

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