Node-Level Routing Isolation for HPC Network Security

The patent segments the network isolation function into multiple levels: topology-level isolation (dividing physical network into isolated zones), node-level isolation (controlling communication between individual nodes), and user-level isolation (separating user workloads). This segmentation allows complex isolation requirements to be managed through simpler, hierarchical components, resolving the contradiction between flexibility and complexity.

The patent implements dynamic network configuration through virtualization technologies that allow virtual networks to be dynamically created, modified, and deleted without physical reconfiguration. Routing tables and network policies can be adjusted in real-time based on workload demands, providing network flexibility while abstracting the underlying complexity from users.

The patent pre-configures routing tables with valid routing information before communication occurs. Nodes have their routing tables prepared in advance with all necessary routing entries, so that during actual communication, nodes only need to perform simple table lookups rather than dynamically computing routes. This preliminary preparation maintains security while minimizing communication overhead.

The patent implements localized routing validation where each node independently checks routing validity based on its own routing table and the source node's identity. Instead of centralized validation for all communications, each node performs local security checks, reducing the overall validation overhead while maintaining network-wide security.

The patent introduces virtual network layers as intermediaries between the stable physical network infrastructure and the dynamic resource allocation requirements. The virtual network layer abstracts the physical topology, allowing logical network configurations to change without affecting the underlying physical structure. This intermediary layer maintains physical stability while enabling logical adaptability.

The patent adds a logical dimension to the physical network by implementing virtual networks that operate overlaying the physical infrastructure. While the physical network maintains its stable topology, the virtual network layer provides dynamic configuration capabilities through software-defined networking, effectively adding adaptability in a new dimension without disrupting physical stability.