MPLS Path Condition Notification Logic for Network Reliability
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Solution Overview
Problem
Current methods for conveying path condition information in telecommunications networks are inefficient, consuming significant resources and often providing stale information due to dynamic network conditions, leading to potential disruptions and increased costs.
Innovation Solution
A system and method for rapid notification of path condition changes using Multiprotocol Label Switching (MPLS) technology, which includes a path condition change logic to detect and notify nodes of changes, allowing for the activation of redundant paths and efficient resource allocation, utilizing MPLS echo request and reply exchanges with sub-Type Length Value (TLV) formats to minimize network resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional path condition information conveyance methods are used, then path condition information can be obtained, but network resources and time are consumed excessively
Solution Approach 1:
The patent extracts only the essential path condition information (link failure status) from the complete path condition data, rather than conveying all detailed information. This is achieved by having the destination node detect link failures and send concise failure notifications to the source node, eliminating the need for continuous comprehensive path condition reporting and reducing network resource consumption significantly.
Solution Approach 2:
The destination node performs self-detection of link failures along the path and autonomously generates failure notifications without requiring external probing or continuous monitoring from the source node. This self-service approach allows the network to maintain reliability through automatic failure detection while minimizing resource usage by avoiding active probing mechanisms.
2Reliability
If traditional path condition information conveyance methods are used, then path condition information can be obtained, but the information becomes stale due to dynamic network conditions
Solution Approach 1:
The patent implements a feedback mechanism where the destination node continuously monitors the communication path and immediately notifies the source node upon detecting any link failure. This real-time feedback ensures that path condition information remains accurate and up-to-date, allowing the source node to quickly respond to changes and maintain reliable communication by switching to alternative paths when necessary.
Solution Approach 2:
The system establishes preliminary alternative communication paths before failures occur. When a link failure is detected, the source node can immediately switch to a pre-configured alternative path without delay, ensuring continuous service and maintaining information freshness by having backup routes ready in advance.
3Reliability
If redundant paths are activated immediately upon path condition changes, then service quality is maintained, but network complexity increases
Solution Approach 1:
The patent pre-configures alternative communication paths and the logic for activating them before any failure occurs. The source node is equipped with predetermined alternative paths and clear activation criteria, so when a failure notification is received, the switch to the alternative path is immediate and automatic. This preliminary preparation maintains service quality without requiring complex real-time decision-making or configuration changes during failures.
Solution Approach 2:
The source node automatically activates alternative paths upon receiving failure notifications without requiring manual intervention or complex control systems. The activation logic is built into the source node, enabling it to self-manage the switching process based on simple failure detection signals, thereby maintaining reliability while minimizing the complexity of network control mechanisms.
Data Source
AI summary
An approach is provided for notifying a change in path condition. A change in condition of a label switched path connecting a first node and second node is detected. A notification message is generated for transmission to the first node. The notification message specifies information related to the detected change according to a predetermined format that can be processed by the first node.