What is SDN ? SDN Definition varies from Vendor to vendor ,commonly the architecture of SDN defined by each vendor includes use of different technology to make network automate, flexible, agile, dynamic ,scalable and most importantly cost effective.
I was going through Network automation article and found the different technology/trends which are some or other way often thought of a SDN, or are important part of SDN discussion .It’s good to go through it :-
OpenFlow : Its low level protocol used to decouple the control plane from the data plane.
NFV Network function Virtualization: It refers to taking functions that have traditionally have been deployed as hardware ,instead deploy them as software.
Virtual Switching :They are software based switches VDS(VMware Distributed switch ) ,AVS(cisco application virtual switch ),VSS(VMware Std. switch) etc. that resides in hypervisor kernel providing local network connectivity b/w virtual machines.
Network Virtualization: It refers to software-only overlay-based solution. A key characteristic of these solutions is that an overlay-based protocol such as Virtual eXtensible LAN (VxLAN) is used to build connectivity between hypervisor-based virtual switches. This connectivity and tunneling approach provides Layer 2 adjacency between virtual machines that exist on different physical hosts independent of Continue reading
Here at Cloudflare, we rely on a set of productivity tools built by Atlassian, including Jira and Confluence. We secure them with Cloudflare Access. In the past, when our team members wanted to reach those applications, they first logged in with our identity provider credentials to pass Access. They then broke out a second set of credentials, specific to Atlassian tools, to reach Jira. The flow is inconvenient on a desktop and downright painful on a mobile device.
While Access can determine who should be able to reach an application, the product alone cannot decide what the user should be able to do once they arrive at the destination. The application sets those specific permissions, typically by requiring another set of user credentials. The extra step slows down and frustrates end users. Access saves time by replacing a cumbersome VPN login. However, we wanted to also solve the SSO problem for our team.
We created a plugin, specific to Atlassian, that could take identity data from the token generated by Access and map it to a user account. Our team members log in with our identity provider to pass Access, and then Access could set their user permissions in Jira Continue reading
The etcdadm tool automates the configuration, deployment, and management of etcd clusters used by Kubernetes to store control plane information.
GTT is also working with another recent acquisition, Interoute, to move its SD-WAN to a universal CPE approach with an integrated firewall.
The software-defined platform runs on top of Cohesity, Cisco, HPE, or Dell EMC hyperconverged secondary storage appliances.
The former Sprint executive says that there are too many SD-WAN competitors in the market muddying the message to enterprises.
In the rush to capitalize on NFV many operators have focused purely on the NFV orchestration, but as they move from trials to production, one key piece is missing — management.
The jointly-developed software integrates SAP’s Data Hub and Cisco’s Container Platform.


When it comes to overall awareness of Cloudflare, it seems most folks fall into one of three camps: 1) those who don’t know much about Cloudflare at all, 2) those who are familiar with one or two of Cloudflare’s many solutions (i.e. DDoS protection, caching, DNS, etc.), and finally, 3) those who understand the full breadth and scope of Cloudflare’s global cloud network. This latter group of folks are especially excited about the broad scope of Cloudflare’s mission, which is: “to help build a better Internet.” Last week our co-founder Michelle Zatlyn explained in a blog post what this mission actually means:
“Our mission at Cloudflare is to help build a better Internet. That is a big, broad mission that means many things. It means that we push to make Internet properties faster. It means respecting individual’s privacy. It means making it harder for malicious actors to do bad things. It means helping to make the Internet more reliable. It means supporting new Internet standards and protocols, and making sure they are accessible to everyone. It means democratizing technology and making sure the widest possible group has access to it. It means increasing value for our community, Continue reading
Hello! My name is Miles Karabas. I would like to tell you about my new course, AWS Certified SysOps Administrator, that just got released. The primary objective of this course is to teach the core components and services, and the basic concepts of AWS platform, and prepare you for the Certified SysOps Administrator – Associate level exam.
Amazon is the world leader in web services, and it’s services are used by thousands of companies around the world. AWS certifications show a potential employer that you have the skills to design, deploy and manage secure, highly available, cost efficient, scalable and fault tolerant systems on the AWS Platform. An AWS certification also puts you in an elite group of cloud engineers. These certifications are highly valued by employers. Last, AWS Certified engineers are among the highest paid IT professionals.
The Certified AWS SysOps Administrator Exam focuses on specific processes of implementation, monitoring and managing of AWS services.
The course will cover the following topics:
AWS exams are experience based, this course includes several hours Continue reading
Radisys says operators want a platform that supports specific applications. They don't want to uncertainty about which platform to use.

In November 2017, the Internet Society hosted the inaugural Indigenous Connectivity Summit in Santa Fe, New Mexico. The event brought together community network operators, Internet service providers, community members, researchers, policy makers, and Indigenous leadership to work together to bridge the connectivity gap in indigenous communities in North America. One of the participants shared his story.
“My background is in architecture. This is all brand new,” said Merrill Yazzie, tribal community planner and project coordinator for the Pueblo of Cochiti. The pueblo had just begun to lay fiber to improve tribal Internet access. “The community itself doesn’t have Internet. The one line just goes to the government, to the administrative building,” said Yazzie. “Everyone relies on their cellular phones or satellite services, which can be pretty expensive.”
According to Yazzie, an enrolled member of the Navajo Nation, there are many advantages to increased Internet access. “It will benefit all generations,” said Yazzie. “Economically it will be a benefit. You don’t have access to the universities because you don’t have a vehicle or public transportation is not available. One way to access education would be through online courses.” Further, he mentioned the benefit increased connectivity could bring to basic services: Continue reading