One of the engineers going through my Ansible for Networking Engineers online course sent me this question:
In the Introduction section, you mention a use case of upgrading software. Do you have an example playbook?
Unfortunately, I don’t. Upgrading software is one of those things that’s almost impossible to simulate in a virtual lab.
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We’ve already mentioned this a few times this year, but we’ve just published an more in-depth article about NAT64check over on the RIPE Labs and APNIC websites.
NAT64check is a tool developed by the Internet Society, Go6, SJM Steffann and Simply Understand that allows you to enter the URL of a particular website, and then run tests over IPv4, IPv6 and NAT64 in order to check whether the website is actually reachable in each case, whether identical web pages are returned, and whether all the resources such as images, stylesheets and scripts load correctly. The rationale behind NAT64check is also explained, how it works, and how you can use it.
If you just want to take a look at the tool, then please go to either https://nat64check.go6lab.si/ or https://nat64check.ipv6-lab.net/, type the URL you wish to check into the box at the top of the page, and the result should be returned within a few seconds. It’s simple and easy, and will help you identify what needs to be done to make your website accessible with IPv6.
Deploy360 also want to help you deploy IPv6, so please take a look at our Start Here page to learn more.
The post Continue reading
From day one, Cumulus Networks has always believed in making data center networking easier and better. To us, that never stopped at just an operating system. Our goal has always been to unify the entire stack on Linux and bring web-scale principles to all aspects of the data center networking process — from network to operations; from host to switch. This was one of the many key drivers behind our introduction of NetQ, a fabric validation system designed to make network operator’s lives easier by ensuring the network is behaving as intended. Today, we launch the next critical step in web-scale networking — Cumulus Host Pack.
Host Pack offers software essentials that bring the host into the network. It optimizes visibility and connectivity into Cumulus Linux network fabric from end to end. Your entire stack can now be unified with the same language and the same tooling using the Linux networking model. Host Pack ensures real-time reliability and uptime to the container by leveraging NetQ to enhance visibility of the host. In addition to visibility, Host Pack enhances network scalability and connectivity by enabling the host to be part of the layer 3 network, while completely supporting popular layer 2 Continue reading
By now, VxLAN is becoming the standard way of tunneling in the Datacenter.
Using VxLAN, i will show how to use the CSR1Kv to extend your Datacenter L2 reach between sites as well.
First off, what is VxLAN?
It stands for Virtual Extensible LAN. Basically you have a way of decoupling your vlan’s into a new scheme.
You basically map your VLAN into a VNI (Virtual Network Identifier), which in essence makes your VLAN numbering scheme locally significant.
Also, since the numbering for VNI’s is a 24 bit identifier, you have alot more flexibility than just the regular 4096 definable VLAN’s. (12 Bits .1q tags)
Each endpoint that does the encapsulation/decapsulation is called a VTEP (VxLAN Tunnel EndPoint). In our example this would be CSR3 and CSR5.
After the VxLAN header, the packet is further encapsulated into a UDP packet and forwarded across the network. This is a great solution as it doesnt impose any technical restrictions on the core of the network. Only the VTEPs needs to understand VxLAN (and probably have hardware acceleration for it as well).
Since we wont be using BGP EVPN, we will rely solely on multicasting in the network to establish who is the Continue reading
Make sure to include the network in your data protection planning.
Professor Satoshi Matsuoka, of the Tokyo Institute of Technology (Tokyo Tech) researches and designs large scale supercomputers and similar infrastructures. More recently, he has worked on the convergence of Big Data, machine/deep learning, and AI with traditional HPC, as well as investigating the Post-Moore Technologies towards 2025.
He has designed supercomputers for years and has collaborated on projects involving basic elements for the current and more importantly future Exascale systems. I talked with him recently about his work with the Tsubame supercomputers at Tokyo Tech. This is the first in a two-part article. For background on the Tsubame 3 system …
Inside View: Tokyo Tech’s Massive Tsubame 3 Supercomputer was written by Nicole Hemsoth at The Next Platform.
Cisco-Springpath deal induces yawns as hyperconverged infrastructure space continues to shake out.
Cut through the marketing hype with these questions for potential suppliers.
The post Worth Reading: Transitioning to a single root appeared first on rule 11 reader.
Versa sees uptick now that Viptela belongs to Cisco.
In the U.S. it is easy to focus on our native hyperscale companies (Google, Amazon, Facebook, etc.) and how they design and deploy infrastructure at scale.
But as our regular readers understand well, the equivalent to Google in China, Baidu, has been at the bleeding edge with chips, systems, and software to feed its own cloud-delivered and research operations.
We’ve written much over the last few years about the company’s emphasis on streamlining deep learning processing, most notably with GPUs, but Baidu has a new processor up its sleeve called the XPU. For now, the device has just been demonstrated …
An Early Look at Baidu’s Custom AI and Analytics Processor was written by Nicole Hemsoth at The Next Platform.
MoNArch is the second European coalition to focus on network slicing.
Companies cite enterprise demand for easier container integration.
“We’re not talking about IPO,” a Druva exec says.