Worth Reading: The Death of Expertise
Bruno Wollman pointed me to an excellent article on the ignorance of expertise and confidence of the dumb. Here’s the TL&DR summary (but you should really read the whole thing):
- The expert isn’t always right;
- An expert is far more likely to be right than you are;
- Experts come in many flavors – usually you need a combination of education and expertise;
- In any discussion, you have a positive obligation to learn at least enough to make the conversation possible. University of Google doesn’t count;
- While you’re entitled to have an opinion, having a strong opinion isn’t the same as knowing something.
Enjoy ;)
xRAN, Open vRAN, and OpenRAN: What’s the Difference?
These three initiatives are all focused on virtualizing the RAN, and some of the same companies belong to all three groups. But why are there three?
After Facebook, Are Google, Amazon And Apple Next?
Facebook is the current villain of surveillance capitalism, but other tech giants may find themselves being asked difficult questions about what they know about us.Join NSX at RSA, Dell Technologies World, and Interop Conferences
Conference season is upon us, and the NSX team will be out in full effect. Join us at any of the following events to get a demo, ask us questions, and hear us wax poetic about all things security and network virtualization!
RSA Conference
April 16–20, 2018
Moscone Center
San Francisco, CA
Booth #4101, North Hall
NSX is delighted to attend everyone’s favorite security conference, RSA. This year’s theme is “Now Matters,” aptly named in time with the astounding number of threats to cybersecurity and data breaches we’ve collectively seen in the news this year. That said, don’t miss a great talk on how app architecture “now matters” when it comes to transforming security by Tomrn, Senior Vice President and General Manager, Security Products, VMware. His session will be on April 17 from 1:00pm–1:45pm. The team will also be doing demos at the VMware booth (#4101 in the North Hall) – so be sure to swing by and chat with us about our offerings.
VMware Speaking Sessions at RSA Conference:
NSX Mindset Reception:
Join us for a NSX Mindset reception with VMware Continue reading
PQ 145: Greg And Ivan Have A Chat
In the ten or so years I ve been blogging, Ivan Pepelnjak has been constant figure in the tech industry. His prolific blogging and sharing of knowledge is one of the inspirations for my own entry into blogging. Over the years, we have usually agreed violently on most things and disagreed on others.
His ipSpace website has grown from a blog into a membership and more recently into a consulting service.
On today’s Priority Queue, Ivan and I talk about automation, intent, product quality and what can be done to improve it, the direction private clouds might take, and whatever else catches our fancy.
Sponsor: Paessler AG
Paessler AG is the maker of PRTG Network Monitor. PRTG monitors your whole IT infrastructure 24/7 and alerts you to problems before users even notice. Find out more about the monitoring software that helps system administrators work smarter, faster, better. Visit paessler.com today.
Show Links:
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CCIE Recertification Continuing Education Revie
Way back in 2008 I passed the CCIE R&S lab to obtain my CCIE #22061. Over the past years, I …
The post CCIE Recertification Continuing Education Revie appeared first on Fryguy's Blog.
Link Propagation 114
Welcome to Link Propagation, a Packet Pushers newsletter. Link Propagation is included in your free membership. Each week we scour the InterWebs to find the most relevant practitioner blog posts, tech news, and product announcements. We drink from the fire hose so you can sip from a coffee cup. Blogs Getting started with Salt for […]Mellanox, Ixia and Cumulus: Part 3
Last–but not least–in the technology triumvirate presenting a joint session at Networking Field Day 17 was Cumulus Networks. This post looks at the benefits of Cumulus Linux as a NOS on the Mellanox Spectrum Ethernet switch platform.
Cumulus Networks
I’ve not yet managed to deploy Cumulus Linux in anger, but it’s on a fairly short list of Network Operating Systems (NOS) which I would like to evaluate in earnest, because every time I hear about it, I conclude that it’s a great solution. In fact, I’m having difficulty typing this post because I have to stop frequently to wipe the drool from my face.
Cumulus Linux supports around 70 switches from 8 manufacturers at this time, and perhaps obviously, that includes the Mellanox Spectrum switches that were presented during this session. This is the beauty of disaggregation of course; it’s possible to make a hardware selection, then select the software to run on it. Mellanox made a fairly strong case for why the Spectrum-based hardware is better than others, so now Cumulus has to argue for why they would be the best NOS to run on the Mellanox hardware.
Cumulus Linux, as the name suggests, is based on Debian linux. Continue reading
Container and Kubernetes Deployment Challenges Give Me Hope
Will speakers at the upcoming Cloud Foundry Summit provide real insight into how to solve container deployment challenges?
Hybrid-Cloud Monitoring Startup Sensu Raises $10M in Series A
The startup maintains a free and open source monitoring framework as well as a commercial platform.
Plotting the interface flap – That’s some analysis
Hi,
What started to be a exploration project is now turning out to be pretty useful for me in day to day analysis. Back in days when I worked in support, there was nothing to predict or really worry about historical events for any future work, just grep for logs and you are done with the last flap and analysis.
Customers / Networks now look for more data, while there are systems which do the telemetry and prediction, from an analysis point of view, as an engineer I want to know if the device or a circuit over an interface is stable over a period of time or even if it flaps what is the likely time and day it flaps in a week for a smoother migration.
Requirement : Plot a simple graph analyzing the interface flaps over a period of one week for a specific interface and decide the actions next from the log messages.[in this case i used a junos device]
Well grepping the logs is not something new for a seasoned engineer but having visual data will prove to be useful for a cutover or migration.
There are systems which can do this work on Continue reading
Zededa Wants to Use the Cloud to Power IoT at the Edge
The company is building a software platform that can be deployed on virtually any edge device in support of IoT. This involves a lightweight software stack that can adapt to different deployment models.
Weekend Reading 041318: GDPR, and the ever deepening pile of security vulnerabilities
With the growing presence and sophistication of online threats like viruses, ransomware, and phishing scams, it’s increasingly important to have the right protection and tools to help protect your devices, personal information, and files from being compromised. Microsoft already provides robust security for Office services, including link checking and attachment scanning for known viruses and phishing threats, encryption in transit and at rest, as well as powerful antivirus protection with Windows Defender. Today, we’re announcing new advanced protection capabilities coming to Office 365 Home and Office 365 Personal subscribers to Continue reading
xRAN Forum’s New Spec Focuses on Fronthaul
Operators want to be able to use different radio heads from different vendors and have them interoperate with existing baseband units. This spec will make that possible.
NEON is the new black: fast JPEG optimization on ARM server
As engineers at Cloudflare quickly adapt our software stack to run on ARM, a few parts of our software stack have not been performing as well on ARM processors as they currently do on our Xeon® Silver 4116 CPUs. For the most part this is a matter of Intel specific optimizations some of which utilize SIMD or other special instructions.
One such example is the venerable jpegtran, one of the workhorses behind our Polish image optimization service.
A while ago I optimized our version of jpegtran for Intel processors. So when I ran a comparison on my test image, I was expecting that the Xeon would outperform ARM:
vlad@xeon:~$ time ./jpegtran -outfile /dev/null -progressive -optimise -copy none test.jpg
real 0m2.305s
user 0m2.059s
sys 0m0.252s
vlad@arm:~$ time ./jpegtran -outfile /dev/null -progressive -optimise -copy none test.jpg
real 0m8.654s
user 0m8.433s
sys 0m0.225s
Ideally we want to have the ARM performing at or above 50% of the Xeon performance per core. This would make sure we have no performance regressions, and net performance gain, since the ARM CPUs have double the core count as our current 2 socket setup.
In this case, however, I Continue reading
Paul Jacobs Thinks He Has a Greater Than 50% Chance of Taking Qualcomm Private
It’s possible that ARM may be one of the potential investors. Qualcomm and ARM have worked together for years, creating chips for mobile devices.
SDxCentral’s Weekly Roundup — April 13, 2018
Intel debuts cloud-ready mainframes; Telefónica completes 5G automated car demo; Sprint and T-Mobile renew merger talks.
On Old Configs and Automation
I used to work with a guy that would configure servers for us and always include an extra SCSI card in the order. When I asked him about it one day, he told me, “I left it out once and it delayed the project. So now I just put them on every order.” Even after I explained that we didn’t need it over and over again, he assured me one day we might.
Later, when I started configuring networking gear I would always set a telnet password for every VTY line going into the switch. One day, a junior network admin asked me why I configured all 15 instead of just the first 5 like they learn in the Cisco guides. I shrugged my shoulders and just said, “That’s how I’ve always done it.”
The Old Ways
There’s no more dangerous phrase than “That’s the way it’s always been.”
Time and time again we find ourselves falling back on the old rule of thumb or an old working configuration that we’ve made work for us. It’s comfortable for the human mind to work from a point of reference toward new things. We find ourselves doing it all Continue reading
Four Security Myths You Need to Shake
In this zero-trust world, no data is safe. In order to tighten security in cloud-based environments, enterprises must embrace the truth about security.