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Category Archives for "Networking"

Nominations Open! Jonathan B. Postel Service Award 2019

We are pleased to announce that nominations for the 2019 Jonathan B. Postel Service Award are now open. Do you know someone who should be a recipient?

This annual award is presented to an individual or organization that has made outstanding contributions in service to the data communications community and places particular emphasis on those who have supported and enabled others.

Nominations are encouraged for individuals or teams of individuals from across the data communications industry around the world who are dedicated to the efforts of advancing the Internet for the benefit of everybody.

Past Postel award winners include Steven G. Huter for “his leadership and personal contributions at the Network Startup Resource Center that enabled countless others to develop the Internet in more than 120 countries,” kc claffy for her pioneering work on Internet measurement, Mahabir Pun for his key role in bringing the Internet to rural Nepal with the founding of the Nepal Wireless Networking Project, and Bob Braden and Joyce K. Reynolds for their stewardship of the RFC (Request for Comments) series.

The signature crystal globe and a USD 20,000 prize will be presented at the IETF 105 in Montreal, Canada (20-26 July 2019) to the chosen Continue reading

IDG Contributor Network: Identifying exceptional user experience (UX) in IoT platforms

Enterprises are inundated with information about IoT platforms’ features and capabilities. But to find a long-lived IoT platform that minimizes ongoing development costs, enterprises must focus on exceptional user experience (UX) for 5 types of IoT platform users.Marketing and sales literature from IoT platform vendors is filled with information about IoT platform features. And no doubt, enterprises choosing to buy IoT platform services need to understand the actual capabilities of IoT platforms – preferably by testing a variety of IoT platforms – before making a purchase decision.To read this article in full, please click here

Datanauts 161: Building Application Resilience On Azure

Just because your application is in the cloud doesn't mean you can forget about resiliency. On today's Datanauts episode, guest Tom Vachon shares insights and tips on how to design a resilient infrastructure in Azure. We discuss availability zones, availability sets, paired regions, and more, as well as how to balance cost against resilience, and the role of DNS.

The post Datanauts 161: Building Application Resilience On Azure appeared first on Packet Pushers.

History Of Networking – OpenConfig – Anees Shaikh and Rob Shakir

OpenConfig is an effort amongst many cooperative network operators to define vender-neutral data models for configuring and managing networks programatically. In this episode we talk with Anees Shaikh and Rob Shakir about the roots of the OpenConfig project and where it’s at currently.
Anees Shaikh
Guest
Rob Shakir
Guest
Russ White
Host
Donald Sharp
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – OpenConfig – Anees Shaikh and Rob Shakir appeared first on Network Collective.

BoringTun, a userspace WireGuard implementation in Rust

Today we are happy to release the source code of a project we’ve been working on for the past few months. It is called BoringTun, and is a userspace implementation of the WireGuard® protocol written in Rust.

boring-tun-logo

A Bit About WireGuard

WireGuard is relatively new project that attempts to replace old VPN protocols, with a simple, fast, and safe protocol. Unlike legacy VPNs, WireGuard is built around the Noise Protocol Framework and relies only on a select few, modern, cryptographic primitives: X25519 for public key operations, ChaCha20-Poly1305 for authenticated encryption, and Blake2s for message authentication.

Like QUIC, WireGuard works over UDP, but its only goal is to securely encapsulate IP packets. As a result, it does not guarantee the delivery of packets, or that packets are delivered in the order they are sent.

The simplicity of the protocol means it is more robust than old, unmaintainable codebases, and can also be implemented relatively quickly. Despite its relatively young age, WireGuard is quickly gaining in popularity.

Starting From Scratch

While evaluating the potential value WireGuard could provide us, we first considered the existing implementations. Currently, there are three usable implementations

Stateful Firewalls: When You Get to a Fork in the Road, Take It

If you’ve been in networking long enough you’d probably noticed an interesting pattern:

  • Some topic is hotly debated;
  • No agreement is ever reached even though the issue is an important one;
  • The debate dies after participants diverge enough to stop caring about the other group.

I was reminded of this pattern when I was explaining the traffic filtering measures available in private and public clouds during the Designing Infrastructure for Private Clouds workshop.

Read more ...

The Importance of sFlow and NetFlow in Data Center Networks

As networks get more complex, and higher-speed interconnects are required, in-depth information about the switches serving these networks becomes crucial to maintain quality-of-service, perform billing, and manage traffic in a shared environment.

Some of you reading this blog post may already be familiar with “sFlow,” an industry-standard technology for monitoring high-speed switched networks and obtaining insights about the data traversing them. This blog post will focus on the importance of sFlow and the similar technology, “NetFlow,” in large – and getting larger – data centers.

Comparing sFlow and NetFlow

sFlow and NetFlow are technologies that, by sampling traffic flows between ports on a switch or interfaces on a router, can provide data about network activity, such as uplink load, total bandwidth used, graphs of history, and so on. To take this data and put it into a form that’s easily digestable, there is NfSen, a web-based front-end for these tools.

While sFlow and NetFlow may – at least on the surface – sound the same, they have underlying protocol differences that may be relevant, depending on your use case. sFlow is, as previously stated, an industry-standard technology. This dramatically increases the chances the sFlow agent (the piece of Continue reading

BiB 073: HammerSpace Data-as-a-Microservice For Kubernetes

HammerSpace announced the ability to provide a global namespace for persistent storage in Kubernetes environments. HammerSpace has tackled this issue with what they are calling data-as-a-microservice. This is not a new type of K8s specific storage, which HammerSpace thinks is about the last thing the Kubernetes world needs. More importantly, HammerSpace is trying to answer the question, “How do we get storage to evolving workloads?”

The post BiB 073: HammerSpace Data-as-a-Microservice For Kubernetes appeared first on Packet Pushers.

Upcoming Safari Books Webinars

I have two webinars on Safari that might be of interest to folks who read here.

Network Troubleshooting Theory and Process

In this course I related by formal training in electronics into the networking world. The primary topic is the half-split method of troubleshooting, which tends to be much faster than the “hunch, hunt, and peck” method most folks seem to intuitively use. This is a course I give on a regular basis, though I suspect I am moving to giving this course twice a year in the future.

How Networks Really Work

This is a course I just started developing. Essentially, this will be split into two pieces. The first part will be walking through packets traversing a network; the second will be walking through various routing protocols converging on some common topologies. The aim here is to connect some of the theory I talk about to the “real world,” so this is not about covering the material, but also about covering the mindset.

I also have two more LiveLessons in production, one with Dinesh Dutt on disaggregation, and another on various forms of abstraction and the tradeoffs around abstraction (such as summarization and aggregation). I hope to have Continue reading

BrandPost: Changes in SD-WAN Purchase Drivers Show Maturity of the Technology

SD-WANs have been available now for the past five years, but adoption has been light compared to that of the overall WAN market. This should be no surprise, as the technology was immature, and customers were dipping their toes in the water first as a test. Recently, however, there are signs that the market is maturing, which also happens to coincide with an acceleration of the market.Evidence of the maturation of SD-WANs can be seen in the most recent IHS Markit Campus LAN and WAN SDN Strategies and Leadership North American Enterprise Survey. Exhibit 1 shows that the top drivers of SD-WAN deployments are the simplification of WAN provisioning, automation capabilities. and direct cloud connectivity—all of which require an architectural change.To read this article in full, please click here

BrandPost: Today’s Retailer is Turning to the Edge for CX

Despite the increasing popularity and convenience of ecommerce, 92% of purchases continue to be made off-line, according to the U.S. Census. That’s putting enormous pressure on retailers to meet new consumer expectations around real-time access to merchandise and order information. In fact, 85.3% of shoppers expect retailers to provide associates with handheld or fixed devices to check inventory and price within a store, a nearly 51% increase over 2017, according to a survey from SOTI.To read this article in full, please click here

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