Network function virtualization (NFV) is a well-accepted software-defined network (SDN) architecture concept. NFV is severally used in cloud platform to enhance the utilization of available network resources. The concept behind NFV is a design of software process architecture with a bunch of collaborative resource utilization functions. The progression of platform providers builds a communication service plan with the help of virtual machines. We propose biogeography-based optimization (BBO) technique in order to enrich virtual network functions (VNFs) to utilize available bandwidth resource in an energy-efficient and cost-effective manner. The cooperative bandwidth sharing approach using BBO reduces delay mean at the time of supervision the impending requests in a multi-cloud environment. Experimental results validate that the utilization of available bandwidth has increased using the proposed scheme with respect to the single user-dedicated resource allocation and multi-user dedicated resource allocation. Delay means, as well as subscription cost, has reduced compared to the existing methods. The correctness of the investigational outcome has been established using an experimental setup along with the proposed algorithm.

网络功能虚拟化（NFV）是一种公认​​的软件定义网络（SDN）架构概念。NFV在云平台中多次使用，以提高可用网络资源的利用率。NFV背后的概念是一种具有一系列协作资源利用功能的软件过程体系结构设计。平台提供商的发展借助虚拟机来构建通信服务计划。我们提出基于生物地理的优化（BBO）技术，以丰富虚拟网络功能（VNF），以节能和经济高效的方式利用可用的带宽资源。使用BBO的协作带宽共享方法可减少在多云环境中监管即将到来的请求时的延迟平均值。实验结果证明，相对于单用户专用资源分配和多用户专用资源分配，使用提出的方案可以提高可用带宽的利用率。与现有方法相比，延迟手段以及订阅成本已降低。研究结果的正确性已通过实验设置和提出的算法来确定。