Can computation be drawn into the network, rather than always being pushed to the edge of the network? Taking content distribution networks as a starting point, the COIN research group is looking at ways to make networks more content and computationally aware, bringing compute into the network itself. Join Alvaro Retana, Marie-Jose Montpetit, and Russ White, as we discuss the ongoing research around computing in the network.
Some of the most important luminaries in the HPC sector have spoken from on high, and their conclusions about the future of the HPC market are probably going to shock a lot of people. …
Will HPC Be Eaten By Hyperscalers And Clouds? was written by Timothy Prickett Morgan at The Next Platform.
In this Tech Bytes episode we welcome back Singtel to discuss real-life examples of WAN problems from customers and how Singtel helped solve them.
The post Tech Bytes: Solving WAN Problems With Singtel Solutions (Sponsored) appeared first on Packet Pushers.
If Ansible Automation Platform was compared to the crunchy goodness of a cookie, private automation hub would be the sweet center bringing it all together and making your mouth water!
Private automation hub provides organizations with a central location for their automation resources. Ansible automation hub is part of the hosted services from console.redhat.com. This hosted offering provides automation adepts access to Red Hat Ansible Certified Content Collections for several industry-leading technologies and partners.
Private automation hub brings this functionality on-premises and allows for users to curate their custom automation content with not only Red Hat Ansible Certified Content but with community content from Ansible Galaxy. Private automation hub also acts as a container registry where we can store and distribute the automation execution environments needed for Ansible Automation Platform 2.
How do we get started with building our own private automation hub and use it in our enterprise? How do automation controller and private automation hub interact?
Let’s get cooking and build our mouthwatering automating platform!
To deploy the “magic in the middle,” we are going to use the Ansible Automation Platform installer from our automation controller node. Since we are installing a private automation Continue reading
Not a simple origin story
On the morning of March 8, a post to Hacker News stated that “All .fj domains have gone offline”, listing several hostnames in domains within the Fiji top level domain (known as a ccTLD) that had become unreachable. Commenters in the associated discussion thread had mixed results in being able to reach .fj hostnames—some were successful, while others saw failures. The fijivillage news site also highlighted the problem, noting that the issue also impacted Vodafone’s M-PAiSA app/service, preventing users from completing financial transactions.
The impact of this issue can be seen in traffic to Cloudflare customer zones in the .com.fj second-level domain. The graph below shows that HTTP traffic to these zones dropped by approximately 40% almost immediately starting around midnight UTC on March 8. Traffic volumes continued to decline throughout the rest of the morning.
Looking at Cloudflare’s 1.1.1.1 resolver data for queries for .com.fj hostnames, we can also see that error volume associated with those queries climbs significantly starting just after midnight as well. This means that our resolvers encountered issues with the answers from .fj servers.
This observation suggests that the problem was strictly DNS related, rather than connectivity related—Cloudflare Radar Continue reading
I got an interesting question that nicely illustrates why Segment Routing (the MPLS variant) is so much better than LDP. Imagine a redundant hub-and-spoke network with hundreds of spokes. Let’s settle on 500 spokes – IS-IS supposedly has no problem dealing with a link-state topology of that size.
Let’s further assume that all routers advertise only their loopbacks1 and that we’re using unnumbered hub-to-spoke links to minimize the routing table size. The global routing table thus contains ~500 entries. MPLS forwarding tables (LFIB) contain approximately as many entries as each router assigns a label to every prefix in the routing table2. What about the LDP table (LIB – Label Information Base)?
I got an interesting question that nicely illustrates why Segment Routing (the MPLS variant) is so much better than LDP. Imagine a redundant hub-and-spoke network with hundreds of spokes. Let’s settle on 500 spokes – IS-IS supposedly has no problem dealing with a link-state topology of that size.
Let’s further assume that all routers advertise only their loopbacks1 and that we’re using unnumbered hub-to-spoke links to minimize the routing table size. The global routing table thus contains ~500 entries. MPLS forwarding tables (LFIB) contain approximately as many entries as each router assigns a label to every prefix in the routing table2. What about the LDP table (LIB – Label Information Base)?
When it comes to memory for compute engines, FPGAs – or rather what we have started calling hybrid FPGAs because they have all kinds of hard coded logic as well as the FPGA programmable logic on a single package – have the broadest selection of memory types of any kind of device out there. …
A Cornucopia Of Memory And Bandwidth In The Agilex-M FPGA was written by Timothy Prickett Morgan at The Next Platform.
1.1.1.1 sees approximately 600 billion queries per day. However, proportionally, most queries sent to this resolver are over cleartext: 89% over UDP and TCP combined, and the remaining 11% are encrypted. We care about end-user privacy and would prefer to see all of these queries sent to us over an encrypted transport using DNS-over-TLS or DNS-over-HTTPS. Having a mechanism by which clients could discover support for encrypted protocols such as DoH or DoT will help drive this number up and lead to more name encryption on the Internet. That’s where DDR – or Discovery of Designated Resolvers – comes into play. As of today, 1.1.1.1 supports the latest version of DDR so clients can automatically upgrade non-secure UDP and TCP connections to secure connections. In this post, we’ll describe the motivations for DDR, how the mechanism works, and, importantly, how you can test it out as a client.
We initially launched our public recursive resolver service 1.1.1.1 over three years ago, and have since seen its usage steadily grow. Today, it is one of the fastest public recursive resolvers available to end-users, supporting the latest security Continue reading
This post originally appeared on the Packet Pushers’ Ignition site on April 5, 2021. In this 8-part series, I explore the basics of managing network devices. This series is geared for the novice, but I hope readers with a bit more experience will find something useful as well. I cover the following topics: Device access […]
The post Device Management From The Ground Up: Part 1 – Accessing Your First Device appeared first on Packet Pushers.
Paid Feature Great hardware is the foundation of any compute platform. …
With ROCm Software And Instinct MI200 GPUs, AMD Has Ecosystem Critical Mass was written by Timothy Prickett Morgan at The Next Platform.
