BGP Labs: Build a Transit Network with IBGP
Last time we built a network with two adjacent BGP routers. Now let’s see what happens when we add a core router between them:
Cloudflare incident on October 30, 2023
Multiple Cloudflare services were unavailable for 37 minutes on October 30, 2023. This was due to the misconfiguration of a deployment tool used by Workers KV. This was a frustrating incident, made more difficult by Cloudflare’s reliance on our own suite of products. We are deeply sorry for the impact it had on customers. What follows is a discussion of what went wrong, how the incident was resolved, and the work we are undertaking to ensure it does not happen again.
Workers KV is our globally distributed key-value store. It is used by both customers and Cloudflare teams alike to manage configuration data, routing lookups, static asset bundles, authentication tokens, and other data that needs low-latency access.
During this incident, KV returned what it believed was a valid HTTP 401 (Unauthorized) status code instead of the requested key-value pair(s) due to a bug in a new deployment tool used by KV.
These errors manifested differently for each product depending on how KV is used by each service, with their impact detailed below.
What was impacted
A number of Cloudflare services depend on Workers KV for distributing configuration, routing information, static asset serving, and authentication state globally. These services instead received Continue reading
D2C218: What’s Inside The AI Magic Box?
AI and machine learning are being more widely used in IT and elsewhere. Today's episode opens the AI magic box to better understand what's inside, including software and hardware. We discuss essentials such as training models and parameters, software components, GPUs, networking, and storage. We also discuss using cloud-based AI platforms vs. building your own in-house, and what to consider when assembling your own AI infrastructure.
The post D2C218: What’s Inside The AI Magic Box? appeared first on Packet Pushers.
D2C218: What’s Inside The AI Magic Box?
AI and machine learning are being more widely used in IT and elsewhere. Today's episode opens the AI magic box to better understand what's inside, including software and hardware. We discuss essentials such as training models and parameters, software components, GPUs, networking, and storage. We also discuss using cloud-based AI platforms vs. building your own in-house, and what to consider when assembling your own AI infrastructure.Addressing Visibility Blind Spots in Co-los and the Public Cloud
As businesses increasingly migrate mission-critical applications or services to colo facilities and the public cloud, the lack of visibility into their cloud infrastructure must be addressed to avoid blind spots.Worth Reading: Taming the BGP Reconfiguration Transients
Almost exactly a decade ago I wrote about a paper describing how IBGP migrations can cause forwarding loops and how one could reorder BGP reconfiguration steps to avoid them.
One of the paper’s authors was Laurent Vanbever who moved to ETH Zurich in the meantime where his group keeps producing great work, including the Chameleon tool (code on GitHub) that can tame transient loops while reconfiguring BGP. Definitely something worth looking at if you’re running a large BGP network.
Worth Reading: Taming the BGP Reconfiguration Transients
Almost exactly a decade ago I wrote about a paper describing how IBGP migrations can cause forwarding loops and how one could reorder BGP reconfiguration steps to avoid them.
One of the paper’s authors was Laurent Vanbever who moved to ETH Zurich in the meantime where his group keeps producing great work, including the Chameleon tool (code on GitHub) that can tame transient loops while reconfiguring BGP. Definitely something worth looking at if you’re running a large BGP network.
Restoring Hashcat Cracking
Hash cracking is often paused or stopped for various reasons. Hashcat has a Pause button […]
The post Restoring Hashcat Cracking first appeared on Brezular's Blog.
How a Focus on Security Blind Spots Can Force Shadow IT out of the Darkness
The speed at which shadow IT can set up cloud environments is cause for concern for IT and security teams. Looking for security blind spots can help put some of the issues into focus.HW014: Exploring Wireless Automation From Python To APIs
Two Wi-Fi engineers share their experiences automating wireless workflows, including the role of Python & tools like Postman.
The post HW014: Exploring Wireless Automation From Python To APIs appeared first on Packet Pushers.
HW014: Exploring Wireless Automation From Python To APIs
Two Wi-Fi engineers share their experiences automating wireless workflows, including the role of Python & tools like Postman.The Final Journey Of Full Stack Journey
The Full Stack Journey is coming to an end. After five years and more than 80 episodes of deeply technical conversations about technologies, tools, and career journeys, this is the final episode of the series. I reflect on my time hosting the podcast, the challenges and pleasures of putting together a show, lessons and insights from all the conversations I've had, thoughts on the state of IT and technology, and what comes next.
The post The Final Journey Of Full Stack Journey appeared first on Packet Pushers.
The Final Journey Of Full Stack Journey
The Full Stack Journey is coming to an end. After five years and more than 80 episodes of deeply technical conversations about technologies, tools, and career journeys, this is the final episode of the series. I reflect on my time hosting the podcast, the challenges and pleasures of putting together a show, lessons and insights from all the conversations I've had, thoughts on the state of IT and technology, and what comes next.