MTN Path Switching and Load Sharing for Reliable Data Streams
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Solution Overview
Problem
In metro transport networks (MTN) and slicing packet networks (SPN), service interruptions occur due to faulty forwarding paths, and heavy service traffic leads to transmission load issues, affecting data stream transmission quality and reliability.
Innovation Solution
Implement a multi-homing communication method using multiple MTN paths for data stream transmission, enabling load sharing and path switching to ensure continuous data transmission by utilizing dual-homing coordination and automatic protection switching mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single forwarding path is used for service transmission, then the network architecture is simple, but service interruptions occur when the path is faulty
Solution Approach 1:
The network path is segmented into multiple independent forwarding paths (working path and protection path) between the same source and destination. This segmentation allows the system to switch between paths when one fails, resolving the contradiction by providing path diversity without requiring complete architectural redesign.
Solution Approach 2:
A protection path is pre-configured alongside the working path before any fault occurs. This beforehand cushioning ensures that when the working path fails, an alternative path is already available, improving reliability without adding complex real-time decision-making mechanisms.
2Productivity
If service traffic is concentrated on a single path, then the network configuration is simple, but transmission load becomes heavy leading to traffic loss
Solution Approach 1:
Service traffic is segmented and distributed across multiple forwarding paths (first MTN path and second MTN path). This traffic segmentation prevents overload on any single path, improving both productivity by increasing total capacity and reliability by avoiding bottleneck failures.
Solution Approach 2:
The system dynamically adjusts traffic distribution between multiple paths based on load conditions and path availability. When one path becomes overloaded or fails, traffic is dynamically redirected to alternative paths, resolving the contradiction between maximizing throughput and maintaining reliable transmission.
3Productivity
If multiple MTN paths are used for load sharing, then data transmission capacity is improved, but path selection complexity increases
Solution Approach 1:
Multiple MTN paths are pre-configured and validated before traffic needs to be distributed. This preliminary action includes establishing path connectivity, verifying bandwidth capacity, and setting up routing rules in advance, which simplifies real-time path selection and reduces management complexity while maintaining high transmission capacity.
Data Source
AI summary
Embodiments of this application disclose a communication method and system applied to an MTN or an SPN. An MTN communication system includes a third communication apparatus connected to the first communication apparatus and the second communication apparatus by using a first MTN path and a second MTN path respectively. If the second MTN path is available, the third communication apparatus transmits data stream corresponding to a first client by using the second MTN path. If the second MTN path is unavailable, the third communication apparatus transmits the data stream corresponding to the first client by using the first MTN path, to ensure normal transmission of the data stream. In addition, the third communication apparatus may further implement load sharing.