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Category Archives for "Networking"

Parallel streaming of progressive images

Parallel streaming of progressive images
Parallel streaming of progressive images

Progressive image rendering and HTTP/2 multiplexing technologies have existed for a while, but now we've combined them in a new way that makes them much more powerful. With Cloudflare progressive streaming images appear to load in half of the time, and browsers can start rendering pages sooner.

In HTTP/1.1 connections, servers didn't have any choice about the order in which resources were sent to the client; they had to send responses, as a whole, in the exact order they were requested by the web browser. HTTP/2 improved this by adding multiplexing and prioritization, which allows servers to decide exactly what data is sent and when. We’ve taken advantage of these new HTTP/2 capabilities to improve perceived speed of loading of progressive images by sending the most important fragments of image data sooner.

This feature is compatible with all major browsers, and doesn’t require any changes to page markup, so it’s very easy to adopt. Sign up for the Beta to enable it on your site!

What is progressive image rendering?

Basic images load strictly from top to bottom. If a browser has received only half of an image file, it can show only the top Continue reading

BrandPost: Brillio and Blue Planet Partner to Bring Network Automation to the Enterprise

Rick Hamilton, Senior Vice President, Blue Planet Software Rick Hamilton, senior vice president of Blue Planet, a division of Ciena, explains how partnering with Brillio brings the next generation of network capabilities to enterprises—just when they need it most.In February 2019, we announced that Blue Planet was evolving into a more independent division, helping us increase our focus on innovative intelligent automation solutions that help our enterprise and service provider customers accelerate and achieve their business transformation goals. To read this article in full, please click here

Full Stack Journey 031: Using Bolt For Task Automation With Yasmin Rajabi

Let's meet Bolt, an open-source automation/orchestration tool originally developed by Puppet. Today's Full Stack Journey dives into how the tool works, the problems it solves, how it's similar to and different from existing tools, and more. Our guest and guide to Bolt is Yasmin Rajabi.

The post Full Stack Journey 031: Using Bolt For Task Automation With Yasmin Rajabi appeared first on Packet Pushers.

Better HTTP/2 Prioritization for a Faster Web

Better HTTP/2 Prioritization for a Faster Web

Better HTTP/2 Prioritization for a Faster Web

HTTP/2 promised a much faster web and Cloudflare rolled out HTTP/2 access for all our customers long, long ago. But one feature of HTTP/2, Prioritization, didn’t live up to the hype. Not because it was fundamentally broken but because of the way browsers implemented it.

Today Cloudflare is pushing out a change to HTTP/2 Prioritization that gives our servers control of prioritization decisions that truly make the web much faster.

Historically the browser has been in control of deciding how and when web content is loaded. Today we are introducing a radical change to that model for all paid plans that puts control into the hands of the site owner directly. Customers can enable “Enhanced HTTP/2 Prioritization” in the Speed tab of the Cloudflare dashboard: this overrides the browser defaults with an improved scheduling scheme that results in a significantly faster visitor experience (we have seen 50% faster on multiple occasions). With Cloudflare Workers, site owners can take this a step further and fully customize the experience to their specific needs.

Background

Web pages are made up of dozens (sometimes hundreds) of separate resources that are loaded and assembled by the browser into the final displayed content. This includes the Continue reading

BrandPost: Mobility and SD-WAN, Part 1: SD-WAN with 4G LTE is a Reality

Without a doubt, 5G — the fifth generation of mobile wireless technology — is the hottest topic in wireless circles today. You can’t throw a stone without hitting 5G news. While telecommunications providers are in a heated competition to roll out 5G, it’s important to reflect on current 4G LTE (Long Term Evolution) business solutions as a preview of what we have learned and what’s possible.This is part one of a two-part blog series that will explore the SD-WAN journey through the evolution of these wireless technologies.Mobile SD-WAN is a reality 4G LTE commercialization continues to expand. According to the GSM (Groupe Spéciale Mobile) Association, 710 operators have rolled out 4G LTE in 217 countries, reaching 83 percent of the world’s population. The evolution of 4G is transforming the mobile industry and is setting the stage for the advent of 5G.To read this article in full, please click here

The Choice Has Never Been Clearer

400g-r3-blog-AB

I am very excited about our next-generation R3 Series routing platforms, which are setting new standards for throughput, density, power efficiency and price performance. We designed these products to address the growing bandwidth demands in cloud datacenter and public networks, supported by significant Arista EOS enhancements including route scale, telemetry and security.

NVMe over Fabrics creates data-center storage disruption

It's quite a mouthful, but Non-Volatile Memory Express over Fabrics (NVMeoF) is shaping up to become perhaps the most disruptive data center storage technology since the introduction of solid-state drives (SSD), promising to bring new levels of performance and economy to rapidly expanding storage arrays.NVMe over Fabrics is designed to deliver the high-speed and low-latency of NVMe SSD technology over a network fabric. There are currently three basic NVMe fabric implementations available: NVMe over Fibre Channel, NVMe over remote direct memory access, and NVMe over TCP.To read this article in full, please click here

NVMe over Fabrics creates data-center storage disruption

It's quite a mouthful, but Non-Volatile Memory Express over Fabrics (NVMeoF) is shaping up to become perhaps the most disruptive data center storage technology since the introduction of solid-state drives (SSD), promising to bring new levels of performance and economy to rapidly expanding storage arrays.NVMe over Fabrics is designed to deliver the high-speed and low-latency of NVMe SSD technology over a network fabric. There are currently three basic NVMe fabric implementations available: NVMe over Fibre Channel, NVMe over remote direct memory access, and NVMe over TCP.To read this article in full, please click here

Building Fabric Infrastructure for an OpenStack Private Cloud

An attendee in my Building Next-Generation Data Center online course was asked to deploy numerous relatively small OpenStack cloud instances and wanted select the optimum virtual networking technology. Not surprisingly, every $vendor had just the right answer, including Arista:

We’re considering moving from hypervisor-based overlays to ToR-based overlays using Arista’s CVX for approximately 2000 VLANs.

As I explained in Overlay Virtual Networking, Networking in Private and Public Clouds and Designing Private Cloud Infrastructure (plus several presentations) you have three options to implement virtual networking in private clouds:

Read more ...

Nutanix offers unified data backup and recovery, allies with AMD

Nutanix is adding a data backup and recovery software package called Nutanix Mine to its hyperconverged infrastructure (HCI) offerings, which integrates third-party data backup and recovery software with Nutanix’s Enterprise Cloud OS software.This allows Nutanix customers to manage their primary and secondary data storage and backup and recovery through a single management console. Nutanix claims that Mine will streamline overall deployment and will simplify the full lifecycle of data backup operations, including ongoing management, scaling and troubleshooting.Nutanix Mine will support a number of data backup and recovery software products, including Veeam, HYCU, Commvault, Veritas, and Unitrends.To read this article in full, please click here

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