Selective Routing for Network Appliances
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Solution Overview
Problem
Current network communication systems lack the ability to selectively share IP address subnets with specific devices, leading to inefficient routing and security concerns, as they often broadcast IP addresses to all neighboring devices without customization.
Innovation Solution
A network appliance method that determines the neighbor type and source type of connected devices, assigns community identifiers, and implements customized routing policies to selectively export IP addresses to permitted communities, allowing for controlled subnet sharing based on configured policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IP addresses are broadcast to all neighboring devices, then routing information is widely available, but security and control are compromised
Solution Approach 1:
The patent implements selective route exporting where different IP subnets are exported to different neighboring devices based on their identity and type. Each neighbor receives a customized subset of routes rather than a universal broadcast, achieving local quality control over information distribution while maintaining security and enabling adaptive subnet sharing.
Solution Approach 2:
The patent segments the routing information distribution by dividing IP subnets into different groups that are selectively exported to different neighbors. The route exporting is segmented based on neighbor identity, device type, and configured policies, allowing controlled distribution rather than monolithic broadcasting.
2Adaptability or versatility
If customized routing policies are implemented, then selective subnet sharing is enabled, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the network appliance automatically determines neighbor types, evaluates routing policies, and makes routing decisions without manual intervention for each route. The system serves itself by automatically matching neighbors to appropriate route subsets based on configured policies, reducing operational complexity while maintaining selective sharing capabilities.
Solution Approach 2:
The patent uses parameter changes in the form of policy configurations that define which subnets are exported to which neighbors. By changing policy parameters rather than restructuring the entire routing system, the patent enables flexible selective subnet sharing with manageable complexity through configurable rules.
Data Source
AI summary
Systems and methods for selectively transmitting routing information between separated local area network (LAN) interfaces are disclosed. In exemplary embodiments, a network appliance to update a local routing table with IP subnet, neighbor type, source type, and community identifier of a second network appliance; based at least on the local routing table, receive a customized routing policy and subnet exporting policy that permits the network appliance to export a subset of IP addresses from the local routing table to a permitted community of network appliances, wherein the customized routing policy and subnet exporting policy are configured by a network administrator of the network appliance; match the permitted community of network appliances to a new community identifier of a third network appliance; and export the subset of IP addresses of the local routing table to the third network appliance based on the customized routing policy and subnet exporting policy.