Address Information Exchange Between RSVP and SR Domains
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Solution Overview
Problem
In networks where nodes in the RSVP domain and SR domain coexist, nodes cannot automatically perceive address information of nodes in the other domain, hindering data transmission between the two domains.
Innovation Solution
A method and apparatus where a first node supporting both SR and RSVP protocols issues and announces address information of SR nodes to the RSVP domain using interior gateway protocol extensions, and vice versa, enabling label mapping and forwarding between domains through a segment routing management server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nodes in RSVP domain and SR domain coexist without address information sharing, then each domain can independently operate, but data transmission between domains cannot be completed
Solution Approach 1:
The patent introduces a Segment Routing Management Server (SRMS) as an intermediary component that collects, manages, and distributes address information between RSVP domain nodes and SR domain nodes. This mediator resolves the information asymmetry problem by providing a centralized repository that both domains can access, enabling cross-domain data transmission without requiring direct peer-to-peer address information sharing.
Solution Approach 2:
The patent segments the network into distinct domains (RSVP domain and SR domain) with a management server layer that handles address information distribution separately. This segmentation allows each domain to maintain its own operational independence while the SRMS layer provides the necessary address information bridging, resolving the contradiction between domain independence and cross-domain communication.
2Reliability
If address information is manually configured between domains, then data transmission can be established, but network complexity and configuration difficulty increase
Solution Approach 1:
The patent implements a self-service mechanism where the SRMS automatically discovers nodes in both RSVP and SR domains, collects their address information, and distributes it to relevant nodes without manual intervention. This automation eliminates the need for complex manual configuration while ensuring reliable cross-domain data transmission, directly resolving the contradiction between transmission reliability and configuration complexity.
Solution Approach 2:
The SRMS performs preliminary actions by pre-collecting and storing address information of all nodes in both domains before actual data transmission occurs. This advance preparation ensures that when data needs to be transmitted between domains, the address information is already available, eliminating the need for complex real-time configuration and simplifying the transmission process.
3Adaptability or versatility
If protocol extensions are implemented for address information sharing, then cross-domain forwarding is enabled, but protocol complexity increases
Solution Approach 1:
The SRMS acts as a protocol mediator that handles the complexity of address information management centrally. Instead of requiring protocol extensions at every node, the SRMS manages the address information distribution, allowing nodes to use simplified protocols while still achieving cross-domain forwarding capability. This centralizes the complexity in the management server rather than distributing it across all nodes.
Data Source
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AI summary
Disclosed are a method and apparatus for processing address information, wherein the method includes: a first node that supports a segment routing (SR) and resource reservation protocol (RSVP) issuing address information of SR nodes to a RSVP domain; and the first node announcing address information of RSVP nodes to a segment routing management server (SRMS) in a SR domain.