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As a component of application performance engineering, network virtualization enables developers to emulate connections between applications, services, dependencies, and end users in a test environment without having to physically test the software on all possible hardware or system software.
In October 2012, a group of telecom operators published a white paper [4] at a conference in Darmstadt, Germany, on software-defined networking (SDN) and OpenFlow.The Call for Action concluding the White Paper led to the creation of the Network Functions Virtualization (NFV) Industry Specification Group (ISG) [5] within the European Telecommunications Standards Institute (ETSI).
A management component decides how communication stacks get composed and the scheduling scheme. To support decisions a management interface is provided to integrate the management system in software-defined networking contexts. NPV has been further investigated as a central element of LPWAN Internet of Things (IoT) scenarios.
The first step in the evolution from stubbing to service virtualization was the technology packaged in SOA testing tools since 2002. [11] The earliest implementations of service virtualization were designed to automate the process of developing simple stub-like emulations so that composite applications could be tested more efficiently. [12]
Initially, network virtualization only involved the separation of the control plane and the forwarding plane (management and packet transmission) within networking devices like switches. This has shifted to include the totality of virtualizing a network, including how the network is programmed, administered, and deployed, be it hardware ...
In that case, the upper layers of the ETSI NFV MANO architecture (i.e. the NFVO and VNFM) cooperate with a container infrastructure service management (CISM) function [5] that is typically implemented using cloud-native orchestration solutions (e.g. Kubernetes). The characteristics of cloud-native network functions are: [6] [7]
The Crossbow project software, combined with next generation network interfaces like xge and bge, enable network virtualization and resource control for a single system. By combining VNICs with features such as exclusive IP zones or the Sun xVM hypervisor, system administrators can run applications on separate virtual machines to improve performance and provide security.
The result was the Network Test Automation Forum entity, which was set up in 2010 following the first face-to-face meeting in Montreal. [3] [4] [5] The NTAF (Network Testing Automation Framework) aims to streamline and enhance the interconnection of commercial testing tools and data communications infrastructure within the telecommunications ...