Service-Specific Route Selection in SDN
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Solution Overview
Problem
Existing communication networks face challenges in making globally optimal routing decisions due to decentralized routing techniques that lack a centralized view and are slow to adapt to changing network topologies and varying service requirements in software-defined networks (SDNs).
Innovation Solution
Implementing a centralized service-specific route selection method using a service-specific route selector that includes a graph database and a routing composition determination engine to determine service-specific performance parameters for network components and identify optimal paths for different services, accommodating dynamic network changes and diverse service requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If decentralized routing techniques are used, then device complexity is reduced and routing decisions can be made at individual nodes, but routing efficiency and adaptability to changing network topologies deteriorate due to lack of centralized view
Solution Approach 1:
A centralized routing composition determination engine is introduced as an intermediary component that receives routing requests, determines optimal paths based on service-specific performance parameters, and returns routing decisions to network components. This mediator architecture enables efficient centralized routing while maintaining relatively simple individual network nodes.
2Adaptability or versatility
If decentralized routing decisions are made at individual nodes, then ease of operation is improved with simpler node architecture, but adaptability to changing network topologies and service requirements deteriorates
Solution Approach 1:
The system dynamically adapts routing decisions based on real-time service-specific performance parameters and changing network conditions. The routing composition determination engine can modify paths in response to varying service requirements and network topology changes, providing high adaptability while maintaining a relatively simple node architecture.
Solution Approach 2:
The system incorporates feedback mechanisms where service-specific performance parameters are continuously monitored and used to adjust routing decisions. This feedback loop enables the centralized controller to adapt routing paths based on actual network conditions and service requirements, improving adaptability without significantly increasing node complexity.
3Measurement precision
If service-specific routing is implemented with centralized control, then routing precision and optimization are improved, but device complexity and control system complexity increase
Solution Approach 1:
The control system is segmented into distinct functional components: a routing composition determination engine for path selection, a service profile storage for configuration, and network components for execution. This segmentation allows precise service-specific routing while distributing complexity across manageable modules rather than requiring a monolithic complex system.
Data Source
AI summary
Methods, apparatus and articles of manufacture (e.g., physical storage media) to perform service specific route selection in communication networks are disclosed. Example route selection methods disclosed herein include determining respective component performance parameters for network components of a communication network based on a weighting profile associated with a first service from a plurality of different services for which traffic is to be routed in the communication network. Disclosed example route selection methods also include determining, based on the component performance parameters, respective path performance parameters for a plurality of candidate paths between two endpoints in the communication network. Disclosed example route selection methods further include selecting, based on the path performance parameters, a first one of the candidate paths to route traffic for the first service between the two endpoints.