Cross-Node Service Topology Discovery in Transoceanic Protection Rings
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Solution Overview
Problem
Manual configuration of cross-node service topologies in transoceanic multiplex section shared protection rings is cumbersome, error-prone, and inflexible, especially in large networks, leading to difficulties in service switching and maintenance.
Innovation Solution
A method and device for automatically discovering cross-node service topologies by broadcasting service identification information through network element nodes, using in-band or out-of-band communication, and maintaining a relation table to determine cross-node service topologies, enabling correct service-level ring protection switching during faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual configuration of cross-node service topologies is performed, then configuration accuracy can be ensured, but operation complexity and time consumption increase significantly
Solution Approach 1:
The system enables network element nodes to automatically discover and configure cross-node service topologies through self-service mechanisms. Each node autonomously sends detection messages, receives responses, and builds topology information without manual intervention, thereby ensuring configuration accuracy while reducing operation complexity
Solution Approach 2:
The invention implements a feedback mechanism where network element nodes send detection messages and receive responses from other nodes. The topology discovery module processes these feedback messages to automatically construct and update cross-node service topology information, ensuring accurate configuration through iterative verification
2Ease of manufacture
If manual configuration is used, then initial setup can be completed, but flexibility and adaptability to network changes are reduced
Solution Approach 1:
The system transitions from static manual configuration to dynamic automatic discovery. The topology discovery module continuously monitors network changes by sending detection messages and receiving responses, automatically updating cross-node service topology information to adapt to network additions, deletions, or modifications in real-time
Solution Approach 2:
The invention performs preliminary automatic topology discovery and configuration before services are actually deployed. Network element nodes proactively send detection messages to establish complete topology information in advance, enabling rapid service deployment and easy adaptation to future network changes without reconfiguration
3Adaptability or versatility
If automatic discovery mechanism is implemented, then operation flexibility is improved, but system complexity increases
Solution Approach 1:
The system divides the automatic topology discovery function into separate modules: a topology discovery module in each network element node that sends detection messages, and a topology information processing module that processes responses and constructs topology data. This segmentation manages system complexity by distributing functions across multiple independent components
Solution Approach 2:
The invention introduces a topology discovery module as an intermediary between network element nodes. This intermediary automatically manages the complex tasks of sending detection messages, processing responses, and constructing topology information, thereby providing operation flexibility while containing system complexity within the intermediary component
4Measurement precision
If service topology information is manually maintained, then data accuracy can be controlled, but time consumption for updates increases
Solution Approach 1:
The system implements continuous automatic topology discovery through periodic detection messages sent by network element nodes. When network changes occur, the topology discovery module continuously monitors and updates cross-node service topology information in real-time, ensuring data accuracy while eliminating time-consuming manual update processes
Solution Approach 2:
The invention uses feedback mechanisms where network element nodes continuously exchange detection messages and responses. The topology information processing module processes these feedback messages to automatically verify and update topology data, ensuring accuracy through continuous verification while reducing update time through automated real-time processing
Data Source
AI summary
A method and a device for each network element node in a transoceanic multiplex section shared protection ring to automatically discover a cross-node service topology. According to the present invention, the method for automatically discovering a cross-node service topology comprises the following steps: at the node, generating a message containing service identification information of the node, the service identification information being used for identifying a service flow configured for a protection group; sending the message containing the service identification information through the transoceanic multiplex section shared protection ring; and at at least one of other nodes, determining a cross-node service crossing topology according to the message containing the service identification information. According to the embodiment of the present invention, by adopting a data communication channel to periodically send a broadcast message and interacting with a configuration module and a protection protocol module in real time, when a fault occurs in a ring.