Juniper networks contrail delivers network virtualization and service automation for federated cloud networks. Using contrail, a tenant can define , direct and control the connectivity , services and safety policies of the virtual network. Once created, policies can be applied across multiple...

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With NFV management and organization (MANO) , management of NFV is now addressed by the MANO stream. It is the ETSI-defined framework for the management and orchestration of all resources in the cloud data center. This comprises computing, networking,storage and virtual machine resources. NFV...

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vCPE is a way to deliver network services such as routing , firewall security and VPN connectivity to enterprises by using software rather than dedicated hardware devices. vCPE also known as cloud CPE. It is a leading application to move hardware appliance functionality to software on commercial...

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SD-WAN It is a particular application of SDN technology applied to WAN connections such as broadband internet, 4G, LTE or MPLS. It depend on four components : Edge connectivity abstraction, WAN virtualization, Policy- driven , centralized management, Elastic traffic management Why...

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OSS/BSS systems leverage APIs and interfaces offered by these EMS systems to drive business operations into the network. The goal of SDN is to separate the management and control planes from the data plane networking functions themselves. SDN control architecture The SDN network architecture...

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NFV This concept is based on the use of COTS hardware for general purpose compute, storage and network. Software functions necessary for running the network are now decoupled from the hardware. NFV permits deployment of virtual network functions as well as network services described as NF...

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Open Flow It is an open interface for remotely controlling the forwarding tables in network switches , routers and access points. It is the communication protocol in SDN environments that enables the SDN controller to directly interact with the forwarding plane of network devices such as...

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Mininet Mininet is a network emulator which creates a network of virtual hosts, switches, controllers, and links. Mininet hosts run standard Linux network software, and its switches support OpenFlow for highly flexible custom routing and Software-Defined Networking. It is an approach of using...

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Characteristics of SDN Plane separation A simplified device Centralized control Network automation and virtualization openness Plane separation Separation of the forwarding and control planes. Characteristics such as MAC address, IP address and VLAN ID reside in the forwarding plane....

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Principles of SDN Decoupling of controller and data planes Logically centralized control Exposure of abstract network resources and state to external applications Decoupling of controller & data plans This principle calls for separable controllers and data planes. It is understood that...

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