Threshold Notification Optimization in Service OAM
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Solution Overview
Problem
In metro Ethernet networks, existing monitoring systems face inefficiencies in detecting and reporting threshold flapping events, leading to incomplete performance data and resource overload due to frequent SET and CLEAR traps generated by network devices when performance metrics cross and recross thresholds quickly.
Innovation Solution
Implementing enhanced network performance monitoring that tracks instances of threshold flapping over a configurable time period, generating a single FLAP trap with the total number of flaps and current state at the end of the period, rather than sending individual SET and CLEAR traps for each threshold crossing, thereby reducing message overload and providing comprehensive performance information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If individual SET and CLEAR traps are sent for each threshold crossing, then complete performance data is provided to the management system, but message overload and resource consumption increase
Solution Approach 1:
The patent combines multiple individual threshold crossing notifications (SET and CLEAR traps) into a single consolidated FLAP trap message. Instead of sending separate messages for each threshold crossing event, the system aggregates these events and reports them together in one message, reducing the total number of messages while preserving performance data completeness.
Solution Approach 2:
The system introduces a monitoring time period during which threshold crossing events are collected and aggregated. Rather than immediately sending notifications for each crossing, the system periodically consolidates events that occur within the same time period, transforming continuous individual notifications into periodic batch reports.
2Loss of information
If individual SET and CLEAR traps are sent for each threshold crossing, then detailed performance information is provided, but management system resource usage increases
Solution Approach 1:
The patent merges multiple individual trap messages into a single consolidated FLAP trap, reducing the processing burden on the management system. By combining multiple events into one message, the system reduces the number of processing cycles, memory allocations, and resource operations required while maintaining detailed performance information within the consolidated message.
3Loss of information
If threshold flapping detection is implemented, then network stability visibility is improved, but device complexity increases
Solution Approach 1:
The system dynamically adjusts its monitoring behavior based on threshold crossing events. When performance parameters cross thresholds, the system activates enhanced monitoring to detect flapping conditions, and transitions from standard monitoring to periodic consolidation mode. This dynamic adaptation allows the system to provide detailed visibility only when needed, reducing overall complexity.
Data Source
AI summary
An example device includes a network interface and a control unit that provides an execution environment for network performance monitoring module. The network performance monitoring monitors performance of a network between the network device and a different network device, determines, based on the monitoring, that the performance does not satisfy a performance metric, in response to the determination, performs enhanced network performance monitoring for a duration of time, and determines, based on the enhance network performance monitoring, a number of times the performance of the network transitioned between not satisfying the performance metric and satisfying the performance metric during the duration of time. The network interface transmits, to an element management system, information about the performance of the network, the information including at least the number of times the performance of the network transitioned between not satisfying and satisfying the performance metric during the duration of time.