Targeted PDU Capture for Wireless Connectivity Diagnostics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing network diagnostics face challenges such as manual intervention, computationally expensive data capture, and difficulty in analyzing network logs, which overwhelm network support professionals with noise and require substantial time and resources.
Innovation Solution
A network device with wireless access point capabilities selectively captures PDUs of interest on multiple interfaces, adding network metadata, and enables on-demand PDU capture by end users, facilitating targeted PDU capture and analysis for enhanced diagnostics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If packet capture is enabled for a particular interface to capture packets sent and received on that interface, then network traffic analysis is facilitated, but computational resources are excessively consumed and data noise increases
Solution Approach 1:
The patent extracts and captures only specific PDU types of interest (such as DHCP, DNS, HTTP) from the network traffic stream, rather than capturing all packets. This selective extraction reduces computational overhead while maintaining diagnostic value by focusing on protocols most relevant to connectivity issues.
Solution Approach 2:
The system applies different capture criteria to different network interfaces and PDU types. By tailoring the capture behavior to local requirements (specific protocols on specific interfaces), it optimizes resource usage while maintaining comprehensive diagnostic coverage where needed.
2Measurement precision
If manual intervention is required to enable packet capture and configure interfaces, then capture can be precisely controlled, but diagnostic time and operational complexity increase
Solution Approach 1:
The network device automatically performs packet capture without requiring manual intervention from network support professionals. The system self-configures capture parameters, selects interfaces, and filters PDU types based on diagnostic needs, thereby reducing both operational complexity and diagnostic time while maintaining capture precision.
Solution Approach 2:
The system pre-configures capture filters and criteria for common diagnostic scenarios before they are needed. When a diagnostic request is made, the pre-configured settings are immediately applied, eliminating the time required for manual configuration while maintaining precise capture control.
3Loss of information
If all captured packets are stored with headers and data for comprehensive analysis, then complete network traffic information is preserved, but data storage requirements and analysis complexity increase
Solution Approach 1:
The system extracts only the header information and selective payload data from captured PDUs, storing only the essential diagnostic fields. This extraction approach preserves all necessary information for analyzing connectivity issues while dramatically reducing the volume of stored data compared to capturing complete packets.
Solution Approach 2:
Different levels of data detail are stored based on the specific diagnostic needs of each PDU type. Critical diagnostic fields are preserved in full detail, while less relevant data is summarized or omitted, optimizing the balance between information completeness and storage efficiency.
4Measurement precision
If packet capture is performed on multiple interfaces simultaneously, then comprehensive network visibility is achieved, but resource consumption and device complexity increase
Solution Approach 1:
The network device is designed with universal capture capabilities that can be applied to multiple interfaces using the same underlying mechanism. By implementing a unified capture framework that works across different interface types, the system achieves comprehensive multi-interface visibility without proportionally increasing device complexity.
Data Source
AI summary
A network device with wireless access point capabilities selectively captures PDUs detected on an instrumented interface(s) to capture those of one or more types/subtypes “of interest.” PDU types/subtypes that network device interface(s) has been instrumented to treat as “of interest” include those transmitted during a device's initial network activity during startup or attempted establishment of a wireless network connection. The interface(s) instrumented for targeted PDU capture can include wireless and/or wired (e.g., Ethernet) interfaces that are received on raw sockets so that each header type of a captured PDU is written to the PDU capture file. Prior to upload of a PDU capture file to a system from which it can be retrieved for analysis, the network device adds network metadata to the file based on context of the environment in which the network device operates. The network metadata can include IP address and/or network topology information determined at runtime.