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OpenFlow and SDN Adoption

OpenFlow is an existing technology derived from academic labs. Its origins can be traced back to 2006 when Martin Casado as part of the “Clean Slate” program developed Ethane. They were trying to figure out ways to manage the network states via a centrally managed global policy. The idea that networks …

The key to cloud computing is the decoupling of virtual resources from physical. The ability to abstract processors, memory, etc from the underlying hardware enables on-demand/elastic provisioning and increased efficiency. This abstraction process has driven the cloud and led to a variety of popular cloud flavors such as IaaS – …

Problem Statement WAN edge networks sit too far from business logic and are built, and designed with limited application and business flexibility. On the other hand, applications sit closer to business logic. It’s time for networking to bridge this gap using policies and business logic-aware principles.   Traditional Segmentation Network …

The way applications are deployed today is so different from the way applications were being deployed 10-15 years ago. So much has changed with the app. The problem we are seeing today is that the network is not being tightly coupled with these other developments. The provision of various network …

From the perspective of cloud migration, two main types of cloud applications exist; Cloud-Centric & Cloud-Ready. Cloud-centric applications are “born for the cloud“, built as greenfield cloud application stacks, meeting all cloud requirements. On the other hand, cloud-ready applications must be redesigned or changed in a way that they can fit the …

On 27th of July, Gartner published its annual Hype Cycle for Networking and Communications. It assesses network technologies that are most relevant and scores them on benefits rating and maturity levels. Key areas that are at “Peak” levels are SD-WAN, WAN Optimizations, SDN Applications, Cloud Managed Networks and White-Box switching. Markets …

Microsoft Azure Cloud consists of functional design modules and services such as Azure Internet Edge, Virtual Networks (VNETs), ExpressRoute, Network Security Groups (NSGs) & User Defined Routing (UDR). Some of these resources are controlled solely by Azure, others are within the customer’s remit. The following post discusses some of those …

It takes too long to provision network services for an application. The network is lacking agility and making any changes is still, a manual process. Usually, when an application is rolled out you have to reconfigure every device with a command CLI interface. This type of manual configuration cannot accommodate …

There is increasing talk about the cloud, what it can do for business and how you connect to it. Connectivity to any cloud can be done via untrusted Internet or private direct connection. For direct connectivity, AWS has a product known as AWS Direct Connect and Microsoft has a competing …

MPLS environments have a number of control and data plane elements. A BGP-free core, it operates at network edges participating in full mesh or route reflection design. BGP is used to pass customer routes, Interior Gateway Protocol (IGP) to pass loopbacks and Label Distribution Protocol (LDP) to label the loopbacks. …

Deploying and managing the Wide Area Network (WAN) has become more challenging. Engineers are faced with a number of design challenges such as traffic flow decentralizing, inefficient WAN link utilization, routing protocol convergence, and application performance issues with active-active WAN edge designs. Active-active WAN designs that spray and pray over …

Compared to 15 years ago when load balancers first came on the scene, applications have exploded. A variety of content such as blogs, content sharing, wiki, shared calendars,s, and social media exist that load balancers ( ADC ) must now serve. A plethora of “chattier” protocols exist with different requirements. …