Communication Device Flow Information Sharing via Pre-Analysis
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Solution Overview
Problem
Existing communication systems struggle to reliably share flow information between active and standby systems, leading to potential differences in flow analysis and communication quality control, especially during failures when incomplete analysis occurs.
Innovation Solution
A communication device equipped with data analysis, communication monitoring, and management information transmission means that extracts and analyzes packet information to generate flow management information, and transmits pre-extracted data to a standby system upon abnormality detection to ensure consistent flow information sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flow information is obtained by analyzing packets in real-time, then communication control can be performed dynamically, but there is a time delay and risk of incomplete analysis during failure switching
Solution Approach 1:
The patent applies preliminary action by having the active communication device transmit packet information to the standby device before failure occurs. The standby device pre-analyzes and stores flow information from received packets, so that when switching occurs, the flow analysis is already complete and consistent flow management information is immediately available without time delay.
2Reliability
If the standby system independently analyzes packets after switching, then flow information can be obtained, but the analysis may differ from the active system due to packet sequence differences
Solution Approach 1:
The patent applies copying by having the standby device receive and analyze the same packet information that the active device analyzed. The active device transmits packet data to the standby device, which creates a copy of the flow analysis process. This ensures that both devices generate identical flow management information based on the same packet sequence, eliminating discrepancies caused by independent analysis.
3Measurement precision
If complete packet analysis is performed before switching, then accurate flow information is obtained, but switching time is extended
Solution Approach 1:
The patent resolves this contradiction by performing the packet analysis action in advance during normal operation. The standby device continuously receives and analyzes packet information from the active device, maintaining ready-to-use flow management information. When failure occurs, the switching only requires activating the pre-analyzed information rather than performing complete analysis, thus achieving both accuracy and speed.
4Reliability
If the standby system receives packets after failure, then flow analysis can be performed, but packets received by active system before failure are lost
Solution Approach 1:
The patent applies the intermediary principle by using the active communication device as a mediator that transmits packet information to the standby device. Instead of the standby device directly receiving packets from the transmission source (which would cause information loss), the active device acts as an intermediary that forwards the same packet data to the standby device, ensuring complete and consistent flow information is available.
Data Source
AI summary
A communication device has a configuration including a data analysis unit 1, a communication monitoring unit 2, and a management information transmission unit 3. The data analysis unit 1 extracts predetermined information from each of a plurality of packets input to the own device, analyzes the predetermined information of the plurality of packets, and generates information relating to a characteristic of each flow of the packets, as flow management information. The communication monitoring unit 2 detects that an abnormality occurs in communication of packets in a communication network to which the own device is connected. When the abnormality detection unit 2 detects the abnormality, the management information transmission unit 3 transmits predetermined information already extracted from a predetermined packet input before the detection of the abnormality, as information for generating the flow management information expected to be generated by the own device, to a standby-system device.