Packet Position Relay for SNMP-Free Switching Hub Compatibility
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Solution Overview
Problem
Existing network systems, particularly in factories, struggle to automatically and accurately associate network addresses with physical positions of apparatuses due to the lack of support for SNMP in existing switching hubs, leading to difficulties in managing and updating position information, which can result in delayed responses to cyber threats and operational disruptions.
Innovation Solution
A position information relay device is introduced between network devices and apparatuses, recognizing position information and inserting it into communication packets without altering existing network configurations, using existing protocols like ARP, and utilizing sensors or transmitters to determine physical positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If SNMP protocol is used to acquire position information, then position information can be automatically acquired, but existing switching hubs that do not support SNMP cannot be used
Solution Approach 1:
The patent introduces a position information relay device as an intermediary component between the apparatus and the network device. This relay device captures position information from packets passing through it and forwards this information to a management device, thereby enabling automatic position information acquisition without requiring the existing switching hub to support SNMP protocol.
2Measurement precision
If position information relay device is introduced, then position information can be recognized accurately, but network configuration complexity increases
Solution Approach 1:
The position information relay device operates by passively capturing position information from packets that naturally pass through it during normal communication. The device does not require active configuration or intervention to obtain position information, as it automatically extracts this data from the packet headers and forwards it to the management device, thereby avoiding increased configuration complexity.
Data Source
AI summary
A position information relay device interposed between a network device and an apparatus includes: a position information recognizer which recognizes position information of the apparatus; and a position information relay which receives a communication packet transmitted by the apparatus to the network device, includes the position information in the communication packet received, and transmits the communication packet including the position information to the network device.