IP Layer PCE Service Failure Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In multilayer service transmission networks, instability of physical parameters in the optical layer network frequently causes false alarms, leading to unnecessary switching between working and protection paths, affecting the transmission of other services and network stability.
Innovation Solution
The IP layer PCE receives alarm details from IP nodes, determines the fault type in the optical layer network, and only performs service optimization when a real fault is detected, skipping optimization when the fault is pseudo, thereby avoiding unnecessary path switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IP layer PCE performs service optimization frequently in response to alarm information, then the service transmission reliability is improved, but the network stability deteriorates due to unnecessary path switching
Solution Approach 1:
The patent applies preliminary action by having the IP layer PCE query alarm details before performing service optimization. The PCE receives alarm information from IP nodes, queries for detailed alarm information, and only performs optimization after verifying the alarm details, thereby preventing unnecessary path switching while maintaining reliable service transmission.
Solution Approach 2:
The patent implements feedback by establishing a mechanism where the IP layer PCE queries alarm details from IP nodes before executing service optimization. This feedback loop allows the PCE to verify the authenticity of alarms and avoid incorrect optimizations that would cause network instability.
2Reliability
If the IP layer PCE performs path computation and service switching, then the service transmission quality is improved, but the resource usage efficiency deteriorates due to path occupation
Solution Approach 1:
The patent applies preliminary action by having the IP layer PCE query alarm details before executing service optimization. This preliminary verification step ensures that path computation and service switching are performed only when necessary, preventing resource occupation by unnecessary optimizations and improving overall resource usage efficiency.
3Reliability
If the IP layer node automatically switches service between working and protection paths, then the service continuity is improved, but the network complexity increases due to frequent switching
Solution Approach 1:
The patent applies preliminary action by having the IP layer PCE query alarm details before initiating service optimization. This preliminary verification prevents unnecessary path switching operations, thereby maintaining service continuity while reducing the complexity caused by frequent switching.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Embodiments of the present invention disclose a service troubleshooting method, apparatus, and device, and are related to the field of communications technologies, so as to resolve a problem that due to instability of a physical parameter of an optical layer network, a service is frequently switched between a working path and a protection path at an optical layer, and an IP layer node generates a false alarm, and consequently, the service is frequently switched between currently available paths, affecting transmission of another service and stability of a transmission network. The present invention is applied to a service transmission network including an IP layer network and an optional layer network. The IP layer network includes an IP layer PCE and an IP node. The IP layer PCE receives alarm details. The IP layer PCE determines a fault type of a service transmission path in the optical layer network according to the alarm details. The IP layer PCE performs service optimization when determining that the path fault type is a real fault. The IP layer PCE does not perform service optimization when determining that the path fault type is a pseudo fault.