Summary of a presentation at FOSDEM about systemd is very interesting. Lots of improvements and practical changes from what I can see that would Linux more usable and viable. But this caught my eye about replacing syslog with HTTP: journald-remoting: the binary logger now has remote support (aka: remoting) via HTTP (instead of the syslog […]
The post Response: Whats New in systemd, 2015 Edition appeared first on EtherealMind.
For best article visual quality, open Eycalyptus – cloud introduction and auto-scaling tutorial directly at NetworkGeekStuff.
In this article, I will show how to do a very simple auto-scaling system on eucalyptus cloud using the wonderful eucalyptus fast start image. Afterwards you will appreciate how easy and configurable the Eucalyptus cloud is in regards to configuring customization scripts on systems that are booted dynamically inside auto-scaling triggers (like low CPU, RAM, etc… ).
A little history, last year (2014), HP has requisitioned a company called Eucalyptus, what I must admit surprised me after spending so much time with OpenStack. So I tried to get an idea why this move has happened and what are the main differences that immediately come to mind to compare these two.
So let me went with you on the first example exposure to Eucalyptus.
… demo experience1) Have a cloud system with capability to deploy a server quickly
2) Test basic systems like load-balancing
3) Check the network forwarding inside the cloud
4) Demonstrate auto-scaling system of Eucalyptus on Continue reading
I’m still convinced that architectures with centralized control planes (and that includes solutions relying on OpenFlow controllers) cannot scale. On the other hand, Big Switch Networks is shipping Big Cloud Fabric, and they claim they solved the problem. Obviously I wanted to figure out what’s going on and Andy Shaw and Rob Sherwood were kind enough to explain the interesting details of their solution.
Long story short: Big Switch Networks significantly extended OpenFlow.
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The problem with obtaining certifications is that you need to renew them. CCIE is no different – I first passed the lab in September 2012, and I was overdue for renewing it. I’m pleased to report that I have now done that, and it is now current until September 2016. Here’s some of my impressions of the 400-101 exam.
I had planned on using the CCDE written exam to renew my R&S CCIE, and then decide if I would go on to attempt the CCDE practical exam. But it seems that the CCDE exam writers and I just don’t share the same mindset. I tried, but it wasn’t working for me, and I wasn’t making progress. So I went back to R&S for my re-cert.
I originally passed version 4, exam number 350-101. This has been updated to version 5. The written exam is now 400-101. Of course, this doesn’t mean that everything changes. Core L2 & L3 protocols don’t change that much. BGP, OSPF and EIGRP and still BGP, OSPF and EIGRP.
There are some key changes though, such as:
A few days ago I completed the last chapter in the Data Center Design Case Studies book: building disaster recovery and active-active data centers. It focuses on application behavior and business needs, not on the underlying technologies; the networking technology part tends to be way easier to solve than the oft-ignored application-level challenges.
I was lucky enough to attend the Powering the Cloud Conference in October last year. While I was there I say down with Federica Monsone from A3 Communications to talk about the role of PR, Marketing and Social media. While we poke fun at marketing it is a deadly serious business. We need our vendors […]
The post PQ Show 45 – Talking About PR & Marketing appeared first on Packet Pushers Podcast and was written by Greg Ferro.
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| Bogus dMAC on most of these frames |
We all know that there are a lot of incomplete security models. Firesheep made this fact painfully obvious to those who regularly work from public hotspots. Although this issue extends beyond insecure wireless deployments, unencrypted hotspots are an easy target. When network traffic isn’t secured in the application layers AND that same traffic is not secured in the network or datalink layers, bad things can and do happen.
TLDR–This article solves this problem by utilizing a Meraki MX60 and the VPN client Native on OSX. To skip to the good stuff, click here.
One approach that some people decide to employ is utilizing a VPN connection for their Internet traffic when connected to untrusted networks. For years, enterprises have utilized these controls to allow secure access to corporate resources. A common trend to day includes utilizing “the cloud” for sensitive enterprise and personal data. While these systems *should* be appropriate resilient, we know that is not always the case. In addition to that, federated authentication schemes and password reuse can also pose additional risk to broken systems and less security conscious users.
Having easy access to some gear, I have been using a Meraki MX60 for a few months. This device makes the configuration Continue reading
Please join us in congratulating the following iPexpert client’s who have passed their CCIE lab!
Have you passed your CCIE lab exam and used any of iPexpert’s self-study products, or attended a CCIE Bootcamp? If so, we’d like to add you to our CCIE Wall of Fame!
This week, we announced that we’ve partnered with Big Data platform provider Cloudera. Cloudera’s data management platform enables enterprises to use Apache’s open source Hadoop software to better manage their data. The Plexxi Switch, now certified with Cloudera’s Enterprise 5 platform, is the first SDN-based Ethernet switch and the only truly single-tier, scale-out networking solution. We’re excited to have Cloudera on board to provide network operators a solution to address their Big Data needs.
Below you will find our top picks for stories in the networking space this week. Have a great weekend!
In this week’s PlexxiTube of the week, our own Dan Backman identifies how Plexxi’s Big Data fabric solution applicable beyond Big Data.
TechTarget: SDN to support Internet of Things devices
By David Geer
Software-defined networking will meet the Internet of Things (IoT) at the crossroads of VPN exhaustion, uptime challenges and limited network resources. The expected result is that SDN will help drive the expansion of IoT-enabled devices, enable more efficient network resource sharing and improve IoT service-level agreements (SLAs). In return, many vendors expect IoT will support SDN decisions and feed hungry policy engines. It’s still early days in terms of looking for use cases Continue reading
3 years ago, Michael DeHaan started the Ansible open source project. Michael has worked tirelessly and done a great job leading the Ansible vision of simple IT automation, and his efforts led to some amazing achievements. Ansible is now a mature open source project and vibrant community, with over 900 contributors (a new contributor almost every day!), thousands of users and millions of downloads. Ansible was recently named a Top 10 Open Source project for 2014, alongside projects like Hadoop, Docker, and OpenStack.
As of today, Michael will be transitioning from his daily operational involvement with Ansible, Inc. to an advisory capacity supporting the community and the Ansible team as needed. You can read more about Michael’s thoughts on the transition here.
As for Ansible, we are grateful for Michael’s vision and efforts and look forward to his continued contributions. He and the Ansible community have set a new standard for simple, agentless automation, and we will continue to build great things on that strong foundation.
Nigel Poulton recently posted an article titled “ESXi vs. Hyper-V - Could Docker Support Be Significant,” in which he contemplates whether Microsoft’s announcement of Docker support on Windows will be a factor in the hypervisor battle between ESXi and Hyper-V. His post got me thinking—which is a good thing, I’d say—and I wanted to share my thoughts on the topic here.
Naturally, it’s worth pointing out that I work for VMware, although I do work in a business unit that makes a multi-hypervisor product (NSX).
Nigel makes a few key points in his article:
To be completely fair, the article fully admits that all this is assumption and is just thinking out loud (his statement, not a play on the title of this post). As I said, I think it’s a good thing to Continue reading
We are back after the Christmas Break with the Networking News.
The post Network Break 26 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Guest blogger Alex Hoff is the VP of Product Management at Auvik Networks, a cloud-based SaaS that makes it dramatically easier for small and mid-sized businesses to manage their networks. Our thanks to Auvik for sponsoring the Packet Pushers community blog today. It’s January and the network industry pundits are calling for 2015 to be the […]
The post SDN: What Small and Mid-Sized Businesses Need to Know in 2015 appeared first on Packet Pushers Podcast and was written by Sponsored Blog Posts.
