Network Function Virtualization: State-of-the-Art and Research Challenges
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Citations
A Cellular Backhaul Virtualization Market Design for Green Small-Cell Networks
Service Function Chaining and Embedding with Spanning Closed Walk
A Residual LSTM based Multi-Label Classification Framework for Proactive SLA Management in a Latency Critical NFV Application Use-Case
Traversing Virtual Network Functions from the Edge to the Core: An End-to-End Performance Analysis
References
The NIST Definition of Cloud Computing
Internet of Things (IoT): A vision, architectural elements, and future directions
OpenFlow: enabling innovation in campus networks
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Frequently Asked Questions (12)
Q2. What is the way to implement the forwarding plane?
depending on the performance and capacity needs of the SDN networking element, and depending on whether specialized hardware transport interfaces are required, the forwarding plane may also be implemented on commodity servers [55].
Q3. What is the role of the service provider in a cloud computing environment?
In a cloud computing environment, the traditional role of service provider is dividedinto two: the infrastructure providers who manage cloud platforms and lease resources according to a usage-based pricing model, and service providers, who rent resources from one or many infrastructure providers to serve the end users [14].
Q4. Why does the author want to provide elastic, automated provisioning for hardware acceleration to VNFs?
The author’s efforts are motivated by the observation that for some functions (e.g., DPI, network deduplication (Dedup) and NAT), industry standard servers may not achieve the required levels of performance.
Q5. What is the name of the chain of functions that make up a service?
2The chain of functions that make up a service for which the connectivity order is important is know as VNF Forwarding Graph (VNFFG) [9].
Q6. What is the main reason for the high reliability and availability needs of NFVs?
These high reliability and availability needs are not only a customer expectation, but often a regulatory requirement, as TSPs are considered to be part of critical national infrastructure, and respective legal obligations for service assurance/business continuity are in place.
Q7. What is the relationship between NFV and cloud computing?
In order for NFV to perform acceptably in cloud computing environments, the underlying infrastructure needs to provide a certain number of functionalities which range from scheduling to networking and from orchestration to monitoring capacities.
Q8. What is the role of the VNFs in the NFV ecosystem?
As an example, if VNFs belonging to the same service are placed in different VMs, then there must be a connection between these two VMs, and this connection must provide sustained, aggregated high bandwidth network traffic to the VNFs.
Q9. What are the two important security risks that should be considered in NFV designs?
In particular, there are two important security risks that should be consideredin NFVI designs: (1) functions or services from different subscribers should be protected/isolated from each other.
Q10. What are the main questions that are still open?
While both industry and academia embrace NFV at unprecedented speeds, the development is still at an early stage, with many open questions.
Q11. What is the main selling point of NFV?
any acceptable NFV platform must be an open, shared environment capable of running applications from different vendors.
Q12. What is the highest effort in promoting and standardizing SDN?
It can be observed that the highest efforts in promoting and standardizing SDN is in data center and cloud computing areas while telecom carriers are driving similar efforts for NFV.