What is VNFL VNF Link
There seems to be some confusion surrounding the term "VNFL VNF Link." While "VNF" (Virtual Network Function) and related terms like VNFD (descriptor), VNFC (component), and VNFFG (forwarding graph) are well-established concepts in Network Functions Virtualization (NFV), "VNFL VNF Link" isn't a standard term used in the industry.
Here's a breakdown of the closest related concepts that might be what you're looking for:
- Connections within a VNF Forwarding Graph (VNFFG):
An VNFFG defines the sequence and path for traffic flow within a service chain composed of multiple VNFs. It specifies the connections (logical links) between these VNFs, indicating how data flows from one VNF to the next. These connections are established by the NFV orchestrator during service chain deployment, ensuring traffic traverses the VNFs in the correct order.
- Interfaces within a Virtual Network Function (VNF):
A VNF itself might have internal or external interfaces for communication. Internal interfaces facilitate communication between VNFCs (components) within the VNF. External interfaces allow the VNF to interact with the network and other VNFs in the service chain. These interfaces can be standardized protocols (e.g., IP) or vendor-specific APIs.
- Network Connections between VNF Instances:
During service chain deployment, the NFV orchestrator establishes network connections between deployed VNF instances based on the VNFFG. These connections utilize physical network resources like switches and cables to route traffic between the VNFs.
It's possible that "VNFL VNF Link" is a non-standard term referring to one of these concepts. If you have more context about where you encountered this term, I might be able to provide a more specific explanation.