he capital & operational expenses. Figure 2. Network virtualization NFV MANAGEMENT & OPERATIONAL & BILLING SUPPORT SYSTEM ORCHESTRATION (MANO) VIRTUALIZED NETWORK FUNCTION (VNFs) OTHER DEPLOYMENT NETWORK FUNCTION VIRTUALIZATION MANAGEMENT VIRTUAL VIRTUAL VIRTUAL COMPUTER STORAGE NETWORK VIRTUALIZATION LAYER COMPURTER & STORAGE NETWORK HARDWARE HARDWARE Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 NFV Practical Implementation VNF can be any network functions such as a Switch, Router, Firewall, NAT, IPS/IDS, WAAS etc. (Chowdhury & Boutaba, 2009; Chowdhury, & Boutaba, 2010; Bogineni, Davidson, Slauson, Molocznik, Martin, McBean, & Smith 2016). It involves the Implementation of Software functions that run on any Standard Industry Servers without the need of Installing the vendor hardware to install a new service within the networking Infrastructure. Building Block for NFV Enterprise Virtualization: A transport network. Physical Hardware. Virtualized Network Function (VNF) 4. Hypervisors. Orchestration & Management. Different vendors are offering their own VNFs & organization may chose to implement different vendor VNF and Implement It on shared hardware. This architecture is the basis of the standardization within NFV Architecture framework and is called as the ETSI NFV Framework. The categorization of the high level building block of the virtualized Infrastructure is divided into three major blocks: Figure 3. VIRTUALIZED NETWORK FUNCTIONS (VNFs) NFV INFRASTRUCTURE FUNCTIONS (VFVI) VIRTUAL VIRTUAL VIRTUAL COMPUTER STORAGE NETWORK MANAGEMENT ORCHESTRATION VIRTUALIZATION LAYER COMPUTER STORAGE NETWORK HARDWARE RESOURCES Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 NFV Practical Implementation VNF - Virtualized Network Function Block: Software function that perform the same task as the proprietary hardware in the form of virtual machines on top of the shared hardware resources. Network Functions Virtualization Infrastructure (NFVI) Block: 