MANO is a Management and Orchestration software aligned with ETSI NFV (Network Net. The key components of the ETSI NFV architecture are the NFV Orchestrator and VNF Manager, known as NFV MANO. Additional layers, such as service orchestration are also required for operators to enable true NFV services. Open Source software can facilitate the implementation of an ETSI aligned NFV architecture, provide practical and essential feedback to the ETSI ISG NFV and increase the likelihood of interoperability among NFV implementations.
NFV Orchestrator – generates, maintains and tears down network services of VNF themselves and enables creation of end to end service over multiple VNFs. NFV Orchestrator is also responsible for global resource management of NFVI resources (Physical resources, Virtual resources and Virtualization Layer). The Orchestrator performs its functions through VNFM and VIM.
VNFM (VNF Manager) – manages a VNF or multiple VNFs and is responsible for life cycle management of VNF instances. Life cycle management means setting up/maintaining and tearing down VNFs. Additionally VNF Manager does the FCAPS (Fault, Configuration, Accounting, Performance, Security) for the virtual part of the VNF.
VIM (Virtualized Infrastructure Manager) – is the management system for NFVI (Network Function Virtualization Infrastructure). It is responsible for controlling and managing the NFVI compute, network and storage resources within the infrastructure domain. It is also responsible for collection of performance measurements and events.
VNF (Virtual Network Function) – is the basic block in NFV Architecture. It is the virtualized network element. Examples of VNFs:
- VNF-eNodeB (PHY+MAC+RLC),
- VNF-eNodeB (PDCP+RRC+S1AP),
- VNF-gNodeB (H PHY+MAC+RLC),
- VNF-gNodeB (PDCP+SDAP+RRC+NGAP),
- VNF-RIC (DB+MGT+xAPPs),
- VNF-EPC (MME+SGW+PGW+HSS),
- VNF-5GC (AMF+SMF+UPF),