Class of Service Probe for Ethernet Delay Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Network operators face challenges in monitoring and diagnosing delay problems across Ethernet networks, particularly in prioritizing data flows and detecting priority code point changes, which can compromise the management of Class of Service (COS) integrity.
Innovation Solution
The method involves transmitting multiple latency probes with different priority codes from a source node to a target node, generating a delay profile based on responses, and storing p-bits values to identify p-bits value manipulation, allowing for the isolation of network issues such as congestion and priority changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple latency probes with different priority codes are transmitted to monitor network performance, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the network performance measurement by dividing it into multiple priority-based latency probes (different COS values). Each probe measures delay for a specific priority class, allowing operators to see detailed performance per priority level rather than an aggregate measurement. This segmentation enables precise identification of which priority classes are experiencing delays.
Solution Approach 2:
The latency probe mechanism serves multiple functions: it measures delay for each priority class, detects p-bits manipulation, and generates comprehensive delay profiles. By making the probe system multi-functional, the patent reduces the need for separate monitoring mechanisms for each function, thereby managing complexity while improving measurement precision.
2Reliability
If p-bits values are stored and compared to detect manipulation, then reliability is improved, but use of energy increases
Solution Approach 1:
The patent implements preliminary action by storing the transmitted p-bits value in the latency probe before transmission and the received p-bits value in the response before comparison. This pre-storing of values allows for efficient manipulation detection without requiring complex real-time analysis, reducing the computational energy needed during operation while maintaining reliable COS integrity monitoring.
3Measurement precision
If intermediate network nodes are targeted for subsequent latency probes to isolate problems, then measurement precision is improved, but productivity decreases
Solution Approach 1:
The patent segments the network path into individual intermediate nodes for targeted probing. When a delay or p-bits manipulation issue is detected, the system isolates specific intermediate nodes as targets for subsequent latency probes. This segmentation allows precise identification of the problematic node or segment, reducing the time and effort needed for troubleshooting compared to blanket network-wide analysis.
Data Source
AI summary
Methods, systems, and apparatus for generating a delay profile for different priority classifications. In one aspect, multiple latency probes are transmitted by a source node to a target network node. Each latency probe has a different priority code. A response to each of the transmitted latency probes is received by the source node from the target network node. Based on the received responses, a delay profile for the target network node is generated by the source node. The delay profile provides multiple network latency measurements for packets transmitted to the target network node with the different priority codes. A user interface of a display is updated to visually present at least a portion of the delay profile.