Network Functions Virtualization

Network Functions Virtualization aims to transform the way that network operators architect networks by evolving standard IT virtualization technology to consolidate many network equipment types onto industry standard high volume servers, switches and storage. Implementation of network functions in software that can run on a range of industry standard server hardware, and that can be moved to, or instantiated in, various locations in the network as required. Network Functions Virtualization is applicable to any data plane packet processing and control plane function in fixed and mobile network infrastructures.

NFV High Level Architecture & Scope:


iLink Expertise and Solutions:

There are a number of challenges to implement Network Functions Virtualization which need to be addressed by the community interested in accelerating progress. iLink’s early involvement with NFV development & implementation will make it one of the dominant partners in the industry. Currently, iLink is collaborating with a known partner in the development of Management & Orchestration (MANO) layer. This layer will support following sub-layers& functionalities.

NFV Orchestrator (NFVO):

  • On-boarding of new Network Service (NS), VNF-FG and VNF Packages.
  • NS lifecycle management (including instantiation, scale-out/in, performance measurements, event correlation, termination).
  • Sends resource related requests: authorization, reservation, allocation by VNG manager.
  • Send configuration info to VNF Manager.
  • Global resource management, validation and authorization of NFVI resource requests.
  • Policy management for NS instances.
  • Ensuring the appropriate level of resilience to hardware and software failures.
  • Automated Scalability & Resiliency

VNF Manager:

  • Lifecycle management of VNF instances – instantiation, update, query, scaling, and termination.
  • Collect state info on VNF for life cycle management.
  • Overall coordination and adaptation role for configuration and event.
  • Reporting between NFVI and the E/NMS.

Virtualized Infrastructure Manager (VIM):

  • Control & manage interaction of VNF with computing, hypervisor, storage, and network resources within one operator’s infrastructure sub-domain.
  • Visibility into and management of NFV infrastructure.
  • Root Cause Analysis of Infrastructure collection and forwarding of performance measurements and events.
  • Collection of infrastructure fault information, capacity planning, monitoring & optimization.

iLink will also support VNF to VNF integration and integration of MANO layer with OSS/BSS systems including OSS/BSS development needs to move to a model in-line with Network Functions Virtualization. Proper integration of multiple virtual appliances from different vendors will allow Network operators need to be able to “mix & match” hardware from different vendors, hypervisors from different vendors and virtual appliances from different vendors without incurring significant integration costs and avoiding lock-in.

iLink’s future plan is to build & implement a suite of systems to support all leading use cases in the NFV domain.