ations with open standard architecture and fully controls virtual network functions. ESC is responsible for monitoring the vNFs state (alive, dead etc) Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 NFV Practical Implementation and vNF application health status (oversubscribed, underload etc.). It uses SNMP or ICMP to monitor the health status and keep track of it. Cisco ESC (Elastic services controller) provides a single point of control to manage VNF lifecycle in a dynamic and multivendor environment. This also gives advance mgmt capabilities through open and standard ETSI VNF MANO (management and orchestration) architectures. Lifecycle Management of Elastic Service Controller Onboarding of any new virtualized network function (vNF) if it is supported in VMWARE or Openstack environment. Deployment and configuration of a new service, it includes the assignment of IP addressing, licensing, connectivity parameters etc. Monitoring keep track of the state of the virtual machine within the virtual environment along with its resources status. Healing of the vNFs component and services. Support for Upgrades/downgrades of different vNFs. Decommissioning of the vNFs when not in use. Scalability of virtual network functions. Complete VNFs Lifecycle Management Summary VNF license management Monitoring Deployment Rollback Recovery Configuration Scalability Update CHALLENGES IN NFV IMPLEMENTATION Compatibility Issues may be a concern between different vendor VNFs & different hypervisors. Security should be considered. Tight Integration of the underlay & Overlay is required for efficient functioning. Verifying the virtual resources requirement before implementation. Not a pre-Integrated Software & Hardware version. Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 NFV Practical Implementation CISCO NETWORK SERVICES ORCHESTRATOR Automation is the focused area for provider organizations and larger enterprises to reduce operational & capital expenses wher