… network and telecommunications' services. A typical service can be expressed in the form of
a virtual network function–forwarding graph (… given substrate network considering resources …

… However, network services in IoT networks are more complex and diverse, therefore, more
… Network Function Forwarding Graphs (VNFFGs) which are Directed Acyclic Graphs (DAGs). …

… Network Functions (VNFs) may cause critical quality assurance problems for such
network … VNF chaining and placement can be considered as the VNF Forwarding Graph (VNF-FG) …

… We show that the solutions can efficiently extend virtualized network functions forwarding
graphs with good execution time and extension requests acceptation performance over …

… logical network with isolated resources, which can be defined as a subset of network resources
… Each VNS is associated with a virtual network function forwarding graph (VNF-FG) to …

… Virtual network function forwarding graph embedding example. On the left-hand side,
there are two VNF-FGs that have VNF and virtual link requirements to be fulfilled by the VNF-FGE …

… Abstract—Network Function Virtualization (NFV) and service orchestration simplify the …
requires, typically, the allocation of Virtual Network Function - Forwarding Graph (VNF-FG), which …

… in order to compose virtual network function forwarding graphs (VNF-FGs) with respect to
the customized requirement of users; (2) VNF forwarding graph embedding (VNF-FGE). Then …

… NFV provides flexibility by virtualizing the network functions and moving them to a … or
wireless networks by considering virtualization of radio functions. A typical network service setup …

… is insufficient because the forwarding graphs only capture the forwarding behavior of the
network, but not the state transitions of the NFs. We propose a Stateful Forwarding Graph (SFG) …