Container Plugin for SDN Policy Automation
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Solution Overview
Problem
In Software-Defined Networking (SDN) environments, configuring and managing network policies for container-based resources is complex due to the heterogeneity of network policies and the challenge of securing container-based clusters, which increases the risk of security breaches and complicates network connectivity management.
Innovation Solution
A container plugin acts as an interface between container orchestration systems and the SDN manager, using label-based mapping to configure and manage container-based network policies efficiently, integrating with Kubernetes and other technologies to automate policy implementation across logical network elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If container-based technology is used to execute multiple isolated processes inside a VM, then resource utilization and isolation are improved, but network connectivity management complexity and security breach risk increase
Solution Approach 1:
The patent introduces an intermediary system (network policy manager and control plane) that mediates between container-based resources and the SDN infrastructure. This intermediary automates the mapping of container labels to network policies, translating high-level security requirements into low-level network configurations without manual intervention, thereby reducing management complexity while maintaining security.
Solution Approach 2:
The system enables self-service through automated label-based policy application. When containers are deployed with specific labels, the system automatically generates and applies corresponding network policies without requiring manual configuration. This self-organizing capability reduces the operational burden on network administrators while maintaining proper security zones and connectivity rules.
2Reliability
If heterogeneous network policies are configured for container-based resources, then security coverage is improved, but configuration complexity and time increase
Solution Approach 1:
The patent implements a universal label-based policy framework that can handle multiple security requirements through a single configuration mechanism. By using labels as a universal identifier, the system can apply various network policies (isolation, security zones, connectivity rules) across different container types and scenarios using the same automated process, thereby reducing configuration time while maintaining comprehensive security coverage.
Solution Approach 2:
The system performs preliminary action by pre-defining network policies based on container labels during the container deployment phase. Instead of configuring complex network policies after deployment, the labels are assigned upfront, and the system automatically generates the corresponding network configurations in advance, significantly reducing the time required for security configuration while ensuring comprehensive coverage.
3Manufacturing precision
If manual network policy configuration is performed for each container, then policy precision is improved, but operational complexity and error risk increase
Solution Approach 1:
The patent uses label copying as a template mechanism where security requirements are defined once as label patterns and automatically copied to multiple containers that share the same label. This allows precise policy definitions to be replicated consistently across numerous containers without manual reconfiguration, maintaining policy precision while dramatically improving operational ease through automated template application.
Data Source
AI summary
Example methods and systems for container-based connectivity check in a software-defined networking (SDN) environment are disclosed. One example method may comprise detecting, a request for a connectivity check between a first container-based resource and a second container-based resource; identifying a first logical network element and a second logical network element; and injecting a connectivity check packet at the first logical network element for forwarding towards the second logical network element. The example method also may comprise: obtaining report information associated with one or more intermediate logical network elements located along a path that is traversed by the connectivity check packet; and determining a connectivity status associated with the first container-based resource and the second container-based resource based on the report information.