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Category Archives for "Networking"

Hedge 144: IPv6 Lessons Learned

We don’t often do a post-mortem on the development and deployment of new protocols … but here at the Hedge we’re going to brave these deep waters to discuss some of the lessons we can learn from the development and deployment of IPv6, especially as they apply to design and deployment cycles in the “average network” (if there is such at thing). Join us as James Harr, Tom Ammon, and Russ White consider the lessons we can learn from IPv6’s checkered history.

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What are data centers? How they work and how they are changing in size and scope

A data center is the physical facility providing the compute power to run applications, the storage capabilities to process data, and the networking to connect employees with the resources needed to do their jobs.Experts have been predicting that the on-premises data center will be replaced by cloud-based alternatives, but many organizations have concluded that they will always have applications that need to live on-premises. Rather than dying, the data center is evolving.It is becoming more distributed, with edge data centers springing up to process IoT data. It is being modernized to operate more efficiently through technologies like virtualization and containers. It is adding cloud-like features such as self-service. And the on-prem data center is integrating with cloud resources in a hybrid model.To read this article in full, please click here

What are data centers? How they work and how they are changing in size and scope

A data center is the physical facility providing the compute power to run applications, the storage capabilities to process data, and the networking to connect employees with the resources needed to do their jobs.Experts have been predicting that the on-premises data center will be replaced by cloud-based alternatives, but many organizations have concluded that they will always have applications that need to live on-premises. Rather than dying, the data center is evolving.It is becoming more distributed, with edge data centers springing up to process IoT data. It is being modernized to operate more efficiently through technologies like virtualization and containers. It is adding cloud-like features such as self-service. And the on-prem data center is integrating with cloud resources in a hybrid model.To read this article in full, please click here

Day Two Cloud 160: Going Deep Into Cilium Service Mesh With eBPF

Today on the Day Two Cloud podcast we go deep on the Cilium service mesh, including a packet walk that takes us from packet ingestion all the way through a Kubernetes cluster. We also talk about how Cilium eBPF differs from other sidecar proxies and the potential performance and observability gains. Strap on your propeller beanie as we try to keep up with guest is Thomas Graf, a co-creator of Cilium and CTO of Isovalent.

How Can a Leadership Coach Help Me?

A leadership coach is someone who helps you develop the skills and knowledge necessary to be an effective leader. A leadership coach can help you identify your strengths and weaknesses, set goals, and create a plan to improve your leadership skills.

Benefits of Working With a Leadership Coach

Think about what coaches can do for you. If you’re wondering how they can help, there are many benefits of working with a leadership coach. Here are some of the ways a leadership coach can help you:

Improve your self-awareness

A leadership coach can help you become more aware of your own strengths and weaknesses, as well as your triggers and what motivates you. This increased self-awareness can help you make better decisions, communicate more effectively, and set better boundaries.

Set goals and create a plan

A leadership coach can help you identify your goals and create a plan to achieve them. They can also help you troubleshoot any roadblocks you may encounter along the way.

Build your confidence

A leadership coach can help you build your confidence by providing feedback and helping you practice your leadership skills.

Get feedback and accountability

A leadership coach can provide you with honest feedback and Continue reading

Microsoft extends Azure server lifetimes by 50%

Cloud service providers have been on a hardware spending spree for years, deploying hundreds of thousands of servers as they build out data centers the size of football stadiums as fast as they can.But the party may be ending. On its recent earnings call with financial analysts, Microsoft announced plans to extend the lifespan of its cloud servers from four years to six years. [ Get regularly scheduled insights by signing up for Network World newsletters. ] CFO Amy Hood said the reason for the longer deployments is due to "increased efficiencies in how we operate our server and network equipment as well as advances in technology have resulted in lives extending beyond historical accounting useful lives."To read this article in full, please click here

Microsoft extends Azure server lifetimes by 50%

Cloud service providers have been on a hardware spending spree for years, deploying hundreds of thousands of servers as they build out data centers the size of football stadiums as fast as they can.But the party may be ending. On its recent earnings call with financial analysts, Microsoft announced plans to extend the lifespan of its cloud servers from four years to six years. [ Get regularly scheduled insights by signing up for Network World newsletters. ] CFO Amy Hood said the reason for the longer deployments is due to "increased efficiencies in how we operate our server and network equipment as well as advances in technology have resulted in lives extending beyond historical accounting useful lives."To read this article in full, please click here

Microsoft extends Azure server lifetimes by 50%

Cloud service providers have been on a hardware spending spree for years, deploying hundreds of thousands of servers as they build out data centers the size of football stadiums as fast as they can.But the party may be ending. On its recent earnings call with financial analysts, Microsoft announced plans to extend the lifespan of its cloud servers from four years to six years. [ Get regularly scheduled insights by signing up for Network World newsletters. ] CFO Amy Hood said the reason for the longer deployments is due to "increased efficiencies in how we operate our server and network equipment as well as advances in technology have resulted in lives extending beyond historical accounting useful lives."To read this article in full, please click here

Microsoft extends Azure server lifetimes by 50%

Cloud service providers have been on a hardware spending spree for years, deploying hundreds of thousands of servers as they build out data centers the size of football stadiums as fast as they can.But the party may be ending. On its recent earnings call with financial analysts, Microsoft announced plans to extend the lifespan of its cloud servers from four years to six years. [ Get regularly scheduled insights by signing up for Network World newsletters. ] CFO Amy Hood said the reason for the longer deployments is due to "increased efficiencies in how we operate our server and network equipment as well as advances in technology have resulted in lives extending beyond historical accounting useful lives."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

Human Challenges Of Network Virtualization – Lessons Learned From NFV Projects

For the last four years I’ve worked on Network Functions Virtualization (NFV) projects at a couple of European Cloud Service Providers (CSPs). The implementation of these projects has proven to be messy (messiness is part of human nature, after all), and I wanted to share some of the lessons I’ve learned.

The post Human Challenges Of Network Virtualization – Lessons Learned From NFV Projects appeared first on Packet Pushers.

Community Spotlight series: Calico Open Source user insights from Sr. Software Developer, Burak Tahtacıoğlu

In this issue of the Calico Community Spotlight series, I’ve asked Burak Tahtacioglu from ParkLab Technology to share his experience with Kubernetes and Calico Open Source.  Let’s take a look at how Burak started his Kubernetes journey, and the insights he gained from Calico Open Source.

Q: Please tell us a little bit about yourself, including where you currently work and what you do there. 

I am a Sr. Software Developer in our Developer Experience team. I’m in charge of a team that maintains the core infrastructure, which includes the Kubernetes clusters we run. We also have the base CNI of the clusters. I am mainly responsible for Kubernetes processes, Istio service mesh, and Apache APISIX API Gateway processes of scaled applications.

Q: What orchestrator(s) have you been using?

Kubernetes.

Q: What cloud infrastructure(s) has been a part of your projects?

Amazon EKS and RKE.

Q: There are many people who are just getting started with Kubernetes and might have a lot of questions. Could you please talk a little bit about your own journey?

I first used container (LXC) processes in my development environment and applied them to the applications I was consulting. Then I started my Continue reading

24 ways to check the status of files using if commands on Linux

There are a lot more ways to check files using if commands than many of us realize. Although this information is included in the bash man page, that man page has thousands of lines and you could easily find yourself paging down more than 100 times to reach it.This post, provides information on each option and examples for some of the most useful ones. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Checking if a file exists One of the most commonly used tests for checking on files is if [ -f filename ]. This test will result in true if the file exists and is a regular file—not a directory or a symbolic link. You might use it like this:To read this article in full, please click here

24 ways to check the status of files using if commands on Linux

There are a lot more ways to check files using if commands than many of us realize. Although this information is included in the bash man page, that man page has thousands of lines and you could easily find yourself paging down more than 100 times to reach it.This post, provides information on each option and examples for some of the most useful ones. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Checking if a file exists One of the most commonly used tests for checking on files is if [ -f filename ]. This test will result in true if the file exists and is a regular file—not a directory or a symbolic link. You might use it like this:To read this article in full, please click here

24 ways to check the status of files using if commands on Linux

There are a lot more ways to check files using if commands than many of us realize. Although this information is included in the bash man page, that man page has thousands of lines and you could easily find yourself paging down more than 100 times to reach it.This post, provides information on each option and examples for some of the most useful ones. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Checking if a file exists One of the most commonly used tests for checking on files is if [ -f filename ]. This test will result in true if the file exists and is a regular file—not a directory or a symbolic link. You might use it like this:To read this article in full, please click here

24 ways to check the status of files using if commands on Linux

There are a lot more ways to check files using if commands than many of us realize. Although this information is included in the bash man page, that man page has thousands of lines and you could easily find yourself paging down more than 100 times to reach it.This post, provides information on each option and examples for some of the most useful ones. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Checking if a file exists One of the most commonly used tests for checking on files is if [ -f filename ]. This test will result in true if the file exists and is a regular file—not a directory or a symbolic link. You might use it like this:To read this article in full, please click here

NVIDIA ConnectX SmartNICs

NVIDIA ConnectX SmartNICs offer best-in-class network performance, serving low-latency, high-throughput applications with one, two, or four ports at 10, 25, 40, 50, 100, 200, and up to 400 gigabits per second (Gb/s) Ethernet speeds.

This article describes how use the instrumentation built into ConnectX SmartNICs for data center wide network visibility. Real-time network telemetry for automation provides some background, giving an overview of the sFlow industry standard with an example of troubleshooting a high performance GPU compute cluster.

Linux as a network operating system describes how standard Linux APIs are used in NVIDIA Spectrum switches to monitor data center network performance. Linux Kernel Upstream Release Notes v5.19 describes recent driver enhancements for ConnectX SmartNICs that extend visibility to servers for end-to-end visibility into the performance of high performance distributed compute infrastructure.

The open source Host sFlow agent uses standard Linux APIs to configure instrumentation in switches and hosts, streaming the resulting measurements to analytics software in real-time for comprehensive data center wide visibility.

Packet sampling provides detailed visibility into traffic flowing across the network. Hardware packet sampling makes it possible to monitor 400 gigabits per second interfaces on the server at line rate with minimal CPU/memory overhead.
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