Network Service Header (NSH) Support

Network Service Header (NSH) is a new service chaining protocol. NSH is added to network traffic, in the packet header, to create a dedicated services plane that is independent of the underlying transport protocol. In general, NSH describes a sequence of service nodes that the packet must be routed to prior to reaching the destination address and adds this metadata information about the packet and/or service chain to an IP packet.

Currently, ID from the VNFFG Descriptor is used to identify the path. This path ID can be used in implementations of NSH to identify paths via the Service Path Identifier (SPI) attribute.