Network layer: data plane, control plane
The network layer consists of a data plane and a control plane:
- Data plane
- Determines how datagram arriving on router input port is forwarded to Router output port
- It has a forwarding function from a local perspective
- Control plane
- Covers network-wide logic
- Determines how datagram is routed among routers along end-end path from source host to destination host
- There are two control-plane approaches:
- Traditional routing algorithms: implemented in routers
- Software-defined networking (SDN): implemented in (remote) servers (in the next figure we have an example of an opensource SDN architecture)
Figure 5 An example of Software Defined Network architecture
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This resource was developed as part of an Erasmus+ project, funded with support from the European Commission under grant agreement 2016-1-SE01-KA203-22064.
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- The University of Borås, Sweden
- The University of the Highlands and Islands, Scotland
- The University of Alcalá, Spain
- Digital Connections, Scotland
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