Route Advertisement with Subnet Prefixes to Reduce Tunnel Configuration
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Solution Overview
Problem
The complexity of configurations required to establish end-to-end connection tunnels between user terminals and cloud servers in cloud computing systems is high, leading to increased network management complexity.
Innovation Solution
A route advertisement method that includes advertising a second route with a subnet prefix and path identifier, which can reduce network configurations, especially tunnel-related configurations, by using interior gateway protocol packets and introducing routes from different domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If end-to-end connection tunnels are established between user terminals and cloud servers, then cloud computing services can be provided, but network configuration complexity increases
Solution Approach 1:
The patent extracts the tunnel establishment function from the routing function by introducing traffic engineering tunnels with dedicated destination identifiers (subnet prefixes). This separation allows standard IP routing to handle general forwarding while tunnels handle specialized cloud service traffic, reducing overall configuration complexity
Solution Approach 2:
The patent introduces intermediate network devices (border devices) that mediate between standard IP networks and tunnel endpoints. These devices translate between standard routing protocols and tunnel-specific configurations, shielding the complexity of tunnel management from end systems
2Ease of operation
If a large quantity of tunnels are configured for cloud service access, then user access capability is improved, but network management complexity increases
Solution Approach 1:
The patent merges multiple tunnel configurations into aggregated route advertisements. Instead of configuring individual tunnels for each cloud service, the system combines multiple destination identifiers into aggregate routes that can be advertised and managed as single entities, reducing the number of configuration operations required
Solution Approach 2:
The patent creates universal tunnel endpoints that can serve multiple cloud services through route aggregation. A single tunnel endpoint can handle traffic for multiple destination subnets by receiving aggregate route advertisements, making the tunnel infrastructure multi-functional and reducing management overhead
3Device complexity
If route aggregation is performed to reduce tunnel quantity, then network configuration is simplified, but routing precision may be reduced
Solution Approach 1:
The patent applies local quality by maintaining specific subnet prefix mappings at tunnel endpoints while advertising aggregated routes to remote devices. The aggregation level is optimized locally at each boundary device based on its specific routing context, achieving the right balance between configuration simplicity and routing precision for each network segment
Data Source
AI summary
A first network device obtains a first route, where the first route includes a first route prefix. The first network device advertises a second route, where the second route includes a subnet prefix and a path identifier, and a range of the subnet prefix includes a range of the first route prefix.