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Layer-3 Data Center The challenges of designing a proper layer-3 data center surface at the access layer. Dual-connected servers terminating on separate Top-of-Rack (ToR) switches cannot have more than one IP address. A limitation results in VLAN sprawl, unnecessary ToR inter-switch links, and uplink broadcast domain sharing. Cumulus …
OpenFlow Protocol So, what is OpenFlow? The following post discusses OpenFlow, the operations of the OpenFlow protocol, and the OpenFlow hardware components you can use to build an OpenFlow network. OpenFlow started in the labs as an academic experiment. They wanted to test concepts about new protocols and forwarding mechanisms …
BGP SDN Before we start our journey on BGP SDN, let us first address what does SDN mean? The Software-Defined Networking (SDN) framework has a large and varied context. Multiple components may or may not be used, OpenFlow Protocol being one of them. Some evolving SDN use cases …
Neutron Networks The following post highlights the OpenStack neutron network and the neutron load balancer focusing on the OpenStack lbaas architecture. OpenStack networking and neutron networks offer virtual networking services and connectivity to and from Instances. It plays a significant role in OpenFlow and SDN adoption. The Neutron …
Network Traffic Engineering Network Traffic engineering (TE) is the engineering of paths that can carry traffic flows that vary from those chosen automatically by the routing protocol(s) used in that network. Therefore we can engineer the paths that better suit our application. We can do this in several …
Application Traffic Steering To enable application traffic steering, many protocol combinations produce an SDN-based architecture; native OpenFlow is only one of those protocols. Some companies view OpenFlow as a core SDN design component while others don’t even include it, aka BGP SDN controller and BGP SDN. For …
NFV Use Cases While Software Defined Networking (SDN) and Network Function Virtualization (NFV) are used in the same context, they satisfy separate functions in the network. NFV is used to program network functions, like network overlays, QoS, VPNs, etc., enabling a series of SDN NFV use cases. SDN is …
Virtual Switch The following post will discuss the capabilities of virtual switching with the virtual switch. This functionality is not carried out with a standard switch, and we will have a distributed virtual switch located closer to the workloads that will connect to a ToR switch. The ToR …
OpenContrail The following post addresses the capabilities and design of OpenContrail, focusing on the aspects of MPLS overlay. Virtual machines have been around for a long time, but we are beginning to spread our compute workloads in several different ways. When you throw in docker containers and bare …
SDN Adoption This post will address SDN OpenFlow while highlighting the contents with an SDN adoption report. Firstly, the basis of the SDN adoption report is the OpenFlow protocol, an existing technology derived from academic labs. Its origins can be traced back to 2006 when Martin Casado, part …
OpenStack Architecture in Cloud Computing The key to cloud computing is decoupling virtual resources from physical ones. 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 various popular cloud flavors …
VIPTELA SD-WAN 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. …