COMMISSIONED: Innovation at the edge is happening at light speed. Everywhere you turn, organizations are seeking to shift their center of data processing gravity from central locations like head offices and datacenters to the outer limits of the operation – to factory floors, hospital wards, truck fleets and smart cities. …
A recent decision from the Higher Regional Court of Cologne in Germany marked important progress for Cloudflare and the Internet in pushing back against misguided attempts to address online copyright infringement through the DNS system. In early November, the Court in Universal v. Cloudflare issued its decision rejecting a request to require public DNS resolvers like Cloudflare’s 1.1.1.1. to block websites based on allegations of online copyright infringement. That’s a position we’ve long advocated, because blocking through public resolvers is ineffective and disproportionate, and it does not allow for much-needed transparency as to what is blocked and why.
What is a DNS resolver?
To see why the Universal decision matters, it’s important to understand what a public DNS resolver is, and why it’s not a good place to try to moderate content on the Internet.
The DNS system translates website names to IP addresses, so that Internet requests can be routed to the correct location. At a high-level, the DNS system consists of two parts. On one side sit a series of nameservers (Root, TLD, and Authoritative) that together store information mapping domain names to IP addresses; on the other Continue reading
It’s been a while since the last netlab release. Most of that time was spent refactoring stuff that you don’t care about, but you might like these features:
Simplified network automation can help organizations more effectively manage resources, offer data insights to better understand a network and workflows, and transform the planning, deployment, and operations of a network.
In the history of computing, there has been an endless push and pull between the need for general-purpose versus fine-tuned custom systems and software. …
Network automation takes a variety of forms, from individual scripts that handle specific tasks, to workflows that have to be orchestrated across multiple devices and systems. Today on the Tech Bytes podcast we talk with sponsor Pliant about its automation platform. Pliant helps you orchestrate across devices and domains with a low-code approach that uses... Read more »
Today on the Tech Bytes podcast we talk with sponsor Pliant about its automation platform. Pliant helps you orchestrate across devices and domains with a low-code approach that uses APIs to automate and orchestrate across your infrastructure.
Amazon Web Services may not be the first of the hyperscalers and cloud builders to create its own custom compute engines, but it has been hot on the heels of Google, which started using its homegrown TPU accelerators for AI workloads in 2015. …
Broadcom’s latest Trident ASIC will include a neural net inference engine on the chip that can analyze traffic and take action in the packet pipeline, but it’s up to customers to build rules and signatures based on their own training data. Broadcom has also announced it will lay off approximately 1,300 VMware employees. Identity provider... Read more »
Today's Network Break discusses a new Trident ASIC with an on-chip neural net inference engine, Broadcom staff cuts at VMware, more bad news from an Okta breach, financial results, and more.
Some friends shared a Reddit post the other day that made me both shake my head and ponder the state of the networking industry. Here is the locked post for your viewing pleasure. It was locked because the comments were going to devolve into a mess eventually. The person making the comment seems to be honest and sincere in their approach to “layer 3 going away”. The post generated a lot of amusement from the networking side of IT about how this person doesn’t understand the basics but I think there’s a deeper issue going on.
Trails To Nowhere
Our visibility of the state of the network below the application interface is very general in today’s world. That’s because things “just work” to borrow an overused phrase. Aside from the occasional troubleshooting exercise to find out why packets destined for Azure or AWS are failing along the way when is the last time you had to get really creative in finding a routing issue in someone else’s equipment? We spend more time now trying to figure out how to make our own networks operate efficiently and less time worrying about what happens to the packets when they leave our organization. Continue reading
On the 26th of January, I’ll be teaching a webinar over at Safari Books Online (subscription service) called Modern Network Troubleshooting. From the blurb:
The first section of this class considers the nature of resilience, and how design tradeoffs result in different levels of resilience. The class then moves into a theoretical understanding of failures, how network resilience is measured, and how the Mean Time to Repair (MTTR) relates to human and machine-driven factors. One of these factors is the unintended consequences arising from abstractions, covered in the next section of the class.
The class then moves into troubleshooting proper, examining the half-split formal troubleshooting method and how it can be combined with more intuitive methods. This section also examines how network models can be used to guide the troubleshooting process. The class then covers two examples of troubleshooting reachability problems in a small network, and considers using ChaptGPT and other LLMs in the troubleshooting process. A third, more complex example is then covered in a data center fabric.
What happens when you let a bunch of people work on different aspects of a solution without them ever talking to each other? You get DNS over IPv6. As nicely explained by Geoff Huston, this is just one of the bad things that could happen:
Around 30 years after we got the first website, the powers that be realized it might make sense to put this is how you access a web server information (including its IPv4 and IPv6 address, and HTTP(S) support information) directly into DNS, using HTTPS Resource Records. It took us long enough 🤷♂️
Server makers Dell, Hewlett Packard Enterprise, and Lenovo, who are the three largest original manufacturers of systems in the world, ranked in that order, are adding to the spectrum of interconnects they offer to their enterprise customers. …
