Fast Failover: Techniques and Technologies
Continuing our Fast Failover saga, let’s focus on techniques and technologies available to implement it (assuming you still think it’s worth the effort).
The following text is heavily based on comments Jeff Tantsura wrote on one of my LinkedIn posts as well as the original blog post. Thank you!
There are numerous technologies you can use to implement fast reroute, from the most complex to the easiest one:
Fast Failover: Techniques and Technologies
Continuing our Fast Failover saga, let’s focus on techniques and technologies available to implement it (assuming you still think it’s worth the effort).
The following text is heavily based on comments Jeff Tantsura wrote on one of my LinkedIn posts as well as the original blog post. Thank you!
There are numerous technologies you can use to implement fast reroute, from the most complex to the easiest one:
Rails Generators Cheat Sheet
As I am digging into Rails again I find myself constantly having to look the naming and syntax of generators up so I am documenting them in this post. Rails utilizes convention over configuration to speed up development and increase developer happiness. If you embrace this fact you will...Bypassing safety check for an obviously safe change
This is less concrete technical than my usual blog post.
For every 100 changes we’re 99% sure won’t cause an outage, one will
It’s actually hard to be 99% sure of anything. I’m not 99% sure today’s Thursday. I say that because more often than one day in a hundred, I’ll think “hmm… feels like Wednesday” when it’s not.
I just closed my eyes and tried to remember what time it is. I don’t think I can guess with 99% accuracy what hour I’m in. (but to be fair, it’s de-facto Friday afternoon today, as I’m off tomorrow).
Anyway… the reason I say this is that this should be kept in mind every time someone comes and says they want to circumvent some process for a change that they are absolutely sure won’t cause an outage, that can actually be put into numbers. And those numbers are “you are not 100% sure of anything”.
By saying you are 99% sure this won’t cause an outage (and are you right about that?) you are saying that for every 100 requests like yours that will bypass normal checks, there will be an outage. You are taking on an amortized 1% of Continue reading
Exploring the LEO Satellite Service Landscape for Potential Enterprise Use
After the failure to launch a market sector in the 1990s, a largely new field of players is betting big on high-speed services for a very different world.BGP Training on Ignition
The first hour of material in my new BGP course over at Ignition dropped this week. I’m not going to talk about configuration and other operational things—this is all about understanding how BGP works, why it works that way, and thinking about design. This course will apply to cloud, Internet edge, DC fabric, and other uses of BGP. From the official site:
BGP is one of the fundamental protocols for routing traffic across the Internet. This course, taught by networking expert and network architect Russ White, is designed to take you from BGP basics to understanding BGP at scale. The 6-hour course will be divided into several modules. Each module will contain multiple video courses of approximately 15 minutes each that drill into key concepts. The first module contains four videos that describe how BGP works. They cover basics including reachability, building loop-free paths, BGP convergence, intra-AS models, and route reflectors.
Insights Platform Now Live! A Deeper, Data-Driven View of the Internet
There are many people, projects, and organizations that are collecting data on various facets of the Internet, but there’s no single site that provides a curated set of insights.
To help address this gap, we’ve launched the Internet Society Insights platform to help everyone gain deeper, data-driven insight into the Internet.
One of the key deliverables of the Measuring the Internet project, we have spent the last few months building the Insights platform together with our valued development partner, Frontwerks AG.
Data and Focus Areas
We’re collating data from several trusted organizations – our data partners – and will examine Internet trends, generate reports, and tell data-driven stories about how the Internet is evolving. Insights launched with two initial focus areas, Internet Shutdowns and Enabling Technologies.
Work is continuing on three additional focus areas – Internet Resilience, the Internet Way of Networking, and Keeping Traffic Local. We aim to add data and insights on these focus areas throughout 2021 and beyond.
Use and Share
Everyone is encouraged to use and share the text, images, and charts presented on Insights under our creative commons license.
If you would like to submit an idea for a guest post for the Continue reading
The Hedge Podcast #62: Jacob Hess and the Importance of History
At first glance, it would seem like the history of a technology would have little to do with teaching that technology. Jacob Hess of NexGenT joins us in this episode of the Hedge to help us understand why he always includes the history of a technology when teaching it—a conversation that broadened out into why learning history is important for all network engineers.
Tech Bytes: ThousandEyes Expands Visibility Into Modern App Architectures (Sponsored)
Today's Tech Bytes peers into cloud visibility with sponsor ThousandEyes. The company is improving its platform with multi-service views, Internet and hybrid cloud visibility, SD-WAN monitoring, and more. The goal is to give you a more comprehensive picture of the dependencies that make up today's applications, services, and networks. Our guests are Angelique Medina and Archana Kesavan.
The post Tech Bytes: ThousandEyes Expands Visibility Into Modern App Architectures (Sponsored) appeared first on Packet Pushers.
Tech Bytes: ThousandEyes Expands Visibility Into Modern App Architectures (Sponsored)
Today's Tech Bytes peers into cloud visibility with sponsor ThousandEyes. The company is improving its platform with multi-service views, Internet and hybrid cloud visibility, SD-WAN monitoring, and more. The goal is to give you a more comprehensive picture of the dependencies that make up today's applications, services, and networks. Our guests are Angelique Medina and Archana Kesavan.Day Two Cloud 077: Why Kubernetes Is Wrong For You
Kubernetes seems like a shining paragon of Ops efficiency, but the reality of running it is quite different. Is your organization up to the task? Is Kubernetes the thing you actually want or need? In this Day Two Cloud episode we talk to Cory O’Daniel and Rishi Malik from Container Heroes, and they have some thoughts on why Kubernetes is wrong for you.Day Two Cloud 077: Why Kubernetes Is Wrong For You
Kubernetes seems like a shining paragon of Ops efficiency, but the reality of running it is quite different. Is your organization up to the task? Is Kubernetes the thing you actually want or need? In this Day Two Cloud episode we talk to Cory O’Daniel and Rishi Malik from Container Heroes, and they have some thoughts on why Kubernetes is wrong for you.
The post Day Two Cloud 077: Why Kubernetes Is Wrong For You appeared first on Packet Pushers.
Remembering Francis Kariuki: Africa’s Tweeting Chief
The African community networks community is sad to learn about the passing of one of its prolific members, Chief Francis Kariuki of Lanet-Umoja, a rural community in Nakuru County, Kenya. He died on on 21 October 2020 after a short illness.
Chief Kariuki was a renowned Kenyan administrator who pioneered the use of technology to foster development, justice, trust, peace, and inclusion in his community. His struggle for digital inclusion earned him several nicknames, including “The Digital Champion” and “The Tweeting Chief,” for being the first African local administrator to use social media channels to promote community development. His passion and drive for adopting technologies in service delivery at the local level earned him national and global recognition.
Chief Kariuki was a strong advocate for community networks in Africa. He successfully championed for a community network in Lanet-Umoja and worked with his community members to coordinate its installation, operation, and management.
Beyond Kenya, Chief Kariuki engaged in the Africa Summits on Community Networks, a platform where community network operators in Africa gather to foster learning, networking, knowledge, and experience sharing. At the Summits, Chief Kariuki shared key insights on community networks and inspired many young people to adopt digital Continue reading