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SFC+SDN based application - Coggle Diagram
SFC+SDN based application
key technologies
NFV (Network Functions Virtualization)
Converting hardware to software-based virtual devices
Virtual Network Functions (VNFs)
Cost reduction, efficiency, flexibility
SDN (Software-Defined Networking)
Centralized monitoring
Enhanced network agility and flexibility
Separation of control plane and data plane
Control Plane: The control plane in a network is responsible for making decisions about how data traffic should be forwarded or handled
Data Plane: The data plane, also known as the forwarding plane, is responsible for actually moving data packets from one network device to another based on the instructions provided by the control plane.
Advantages
Centralized Control
Flexibility and Programmability
Dynamic Traffic Engineering
Isolation and Security
SFC (Service Function Chaining)
Ordered sequence of VNFs
End-to-end service provisioning
Enabling 5G network slicing
Improving subscriber/operator relationship
Challenges of Traditional Network Architecture
Dedicated, expensive hardware
High CAPEX and OPEX
Network rigidity and complexity
Limited network expansion capabilities
Growing demand for services and users
Implementation
OpenFlow
Controller (SDN)
OpenvSwitch
DB tables describing service and Flow to service binding
SFC application interrogates DB on the flow specification