Multipath Domain Name Resolution via Query Duplication
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Solution Overview
Problem
Current domain name resolution methods in multipath-access scenarios are inefficient due to sequential querying, potential conflicts between name servers, and reliance on a single access path, leading to delays and reduced reliability.
Innovation Solution
A method that generates and sends duplicated domain name queries to multiple name servers via different access paths, allowing for simultaneous responses and improved reliability by selecting the fastest or highest-priority response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single DNS request is sent over one access path to a preferred name server, then the device follows a simple sequential querying process, but this leads to extra delay when other name servers could respond faster
Solution Approach 1:
The patent applies preliminary action by sending multiple DNS queries to different name servers simultaneously before knowing which one will respond fastest. The access device pre-duplicates the initial domain name query into multiple multiplied queries and sends them in parallel to different name servers via different access paths, so that the fastest response is received without waiting for sequential queries to exhaust other options.
Solution Approach 2:
The patent applies partial or excessive action by sending more DNS queries than the traditional single query approach. Instead of sending one query to one preferred name server, the system sends multiple queries to multiple name servers (including preferred and non-preferred ones) simultaneously, using more resources (multiple queries) to achieve better performance (faster resolution).
2Loss of information
If multiple name servers hold different information on a query, then comprehensive information is available, but conflicts arise in determining the most suitable IP address
Solution Approach 1:
The patent applies feedback by implementing a selection mechanism that receives responses from multiple name servers and evaluates them according to predefined criteria. The access device compares the multiple responses and selects the most suitable one based on factors such as response time, name server priority, and information validity, providing feedback-based decision making to resolve conflicts between different name server responses.
Solution Approach 2:
The patent applies parameter changes by introducing multiple evaluation parameters for selecting among multiple name server responses. Instead of accepting any response, the system changes the selection criterion from simple first-come-first-served to multi-parameter evaluation including response time, name server priority, and information consistency, thereby resolving conflicts through parameter-based decision making.
Data Source
AI summary
A method for domain name resolution includes: requesting, by an access device, via a resolving request, an IP address based on a present domain name or a domain name based on a present IP address, wherein the access device is configured to have multipath access to a data network via at least two access paths; generating, by the access device, an initial domain name query based on the resolving request; duplicating, by the access device, the initial domain name query into at least two multiplied domain name queries; sending, by the access device, each of the at least two multiplied domain name queries to a respective name server; and receiving, by the access device, a domain name response comprising the requested IP address or the requested domain name from each respective name server.