OSPF Open shortest path first is a dynamic routing protocol which creates a topology between the routers to distribute routing information inside an Autonomous system. If you are not familiar with OSPF, don’t worry ! In this article OSPF will be explained in great detail. Are you interested in design aspect of OSPF, many OSPF design examples will […]
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2014 was a great year for Ansible.
Ansible Highlights from 2014
Named SD Times #1 Company to Watch in 2015 and a Top 10 open source project in 2014 by Red Hat’s opensource.com.
The Ansible open source project has had over one million downloads in 2014.
O’Reilly released the preview of its first Ansible book (available on Ansible.com) with the full book due out in early 2015.
There are over 40 regular worldwide Ansible meetups, with new meetups popping up weekly around the world from Sydney to South Africa.
Over 600 people attended AnsibleFests in San Francisco, Austin & New York in 2014, and 400 people are expected at the first AnsibleFest London in February 2015.
Ansible Tower - Ansible’s enterprise IT automation solution - has been downloaded over 5,000 times and by 27 of the Fortune 100.
Ansible Tower is in production managing tens of thousands of servers, VMs and cloud instances across enterprise verticals that include financial services, government, high-tech manufacturing, education, web & e-commerce and media.
Ansible released three major upgrades of Ansible Tower in 2014, most recently adding capabilities for delivering self-service IT and HA for enterprise IT organizations.
Ansible released agentless support for Continue reading
ComputerWeekly recently posted a great breakdown of Ansible's role in IT automation.
Ansible Inc (upper case) is a company that makes "agentless" orchestration and configuration management tools in the form of an automation engine designed to help deploy both applications and the wider software systems that they exist within.
The core technology proposition here is a developer play yes -- but it's also an opportunity for less technical users to get involved with IT automation because Ansible avoids the need to write custom scripts or code to manage applications.
Read the full atricle on ComputerWeekly
For whatever reason (subliminal messages from vendor marketing departments?), I’m constantly brooding about the vendor lock-in, its inevitability, and the way supposedly disruptive companies try to use the fear of lock-in to persuade na├»ve customers to buy their products.
Read more ...We’ve heard a lot of Software Defined Networking (SDN), Open Networking, APIs, and policy models over the past few months (and years). There are days where it’s sickening to hear the term SDN, but even on those darkest days, the reality is that the network industry has a bright and open future. In this post, I’m going to share a list of networking projects that I’m aware of that are not only open, but also open source. It is definitely eye opening and extremely positive to see so much open source activity in the network industry.
Edit/Note: updated list can be found here on GitHub. Feel free to issue a pull request to add or modify the list.
OpenDaylight (ODL) – established in April 2013 is an open source Software Defined Networking (SDN) controller platform(s). There are different controller platforms for different use cases.
OpenFlow (OF) – established in the late 2000s, the OpenFlow 1.0 release launched in December 2009. The Open Networking Foundation took over the development (not actually coding) of OpenFlow when ONF formed in late March / early April in 2010.
Open vSwitch (OVS) – established in mid to late 2009 by the Nicira team to Continue reading
Original content from Roger's CCIE Blog Tracking the journey towards getting the ultimate Cisco Certification. The Routing & Switching Lab Exam
There are three types of OSPF authentication. Type 1 – no authentication Type 2 – clear text Type 3 – cryptographic (MD5 or SHA) Lets explore each type in a lot more detail and then look at the router configuration for some real world examples. Authentication can be configured on a per area or per... [Read More]
Post taken from CCIE Blog
Original post OSPF Authentication – Part 1
Wireless networks are becoming faster and faster. With 802.11ac Wave 2, wireless networks will be capable of achieving speeds up to 6.8 Gbps. This creates challenges when connecting APs to switches which normally run Ethernet at 1GE or 10GE. To meet these evolving demands, Cisco has as of today revealed some new products.
Cisco is releasing a new compact switch supporting multigigabit technology, the Cisco Catalyst 3560-CX. The most compelling new features are support for multigigabit interfaces, more power available for PoE, support for 10GE on the uplinks and being able to be deployed as an Instant Access switch. It also support PoE pass through which can help save on long cable runs. The Catalyst 3560-CX supports two multigigabit interfaces.
This device is fanless, so it can be deployed in cubicles to decrease the need for a wiring closet. It also has the support for role based security. Cisco’s goal is to provide for a better working environment, which they call “Next Generation Workspace”.
If you are a technical person, you are probably wonder about the multigigabit ports. IEEE only has 1GE, 10GE and so on. Cisco started the NBASE-T Alliance with Aquantia, Freescale, and Xilinx. Other members Continue reading
During the recent Virtualization Field Day 4, I was located at a vendor building and jumped on their guest wireless network. There are a few things that I need to get accomplished before the magic happens at a Tech Field Day event, so I’m always on the guest network quickly. It’s only after I take care of a few website related items that I settle down into a routine of catching up on email and other items. That’s when I discovered that this particular location blocked access to IMAP on their guest network. My mail client stalled out when trying to fetch messages and clear my outbox. I could log into Gmail just fine and send and receive while I was on-site. But my workflow depends on my mail client. That made me think about guest WiFi and usability.
Guest WiFi is a huge deal for visitors to an office. We live in a society where ever-present connectivity is necessary. Email notifications, social media updates, and the capability to look up necessary information instantly have pervaded our lives. For those of us fortunate enough to still have an unlimited cellular data plan, our connectivity craving Continue reading
On January 15th, France’s chief information systems defense official, Adm. Arnaud Coustilliere, announced a sharp rise in online attacks against French web sites:
“Calling it an unprecedented surge, Adm. Arnaud Coustilliere, head of cyberdefense for the French military, said about 19,000 French websites had faced cyberattacks in recent days, …” [1].
As we’ve done in the recent past for North Korea [2], Hong-Kong [3], and Israel [4], we can leverage Arbor’s ATLAS initiative to observe how real world conflict is reflected in the digital realm. ATLAS receives anonymized Internet traffic and DDoS event data from over 330 participating Internet Service Providers worldwide. In particular, we are interested in DDoS attacks before and after Sunday, January 11th. As reported in [1],
“Coustilliere called the attacks a response to the massive demonstrations against terrorism that drew 3.7 million people into the streets Sunday across France.”
In order to gauge this response, we compare the DDoS attacks that took place between January 3rd and January 10th to the DDoS attacks that took place between January 11th and January 18th inclusive.
Between January 3rd and January 18th, a total of 11,342 Continue reading
December 2014 found me in Barcelona as a guest of HP at the “HP Discover” event. Nominally I went to see what was up in the world of networking, but as you can imagine with the breadth of products that HP produces, I found myself looking at all sorts of things. I’ll cover a few fun things in other posts, but I’ll start with a bit of networking because, well, this is MovingPackets after all.
I mentioned the HP SDN App Store in a previous post about HP Openflow. One of the fears I raised was how an App Store would work in terms of support. Talking to a contact at HP made things a little clearer, and there’s actually quite a nice – and perhaps obvious – support plan for the Apps you can download. Effectively, there are three tiers of supported applications as I understand it, and a glance at the App Store shows that these are now called “Apps Circles”: