Network Port Misconfiguration Detection via LLDP Analysis
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Solution Overview
Problem
Complex wireless network systems in commercial premises often experience issues due to port misconfigurations between connected network devices, leading to access problems for client devices.
Innovation Solution
A network management system (NMS) is employed to determine port misconfigurations by obtaining and analyzing port information from connected network devices using protocols like LLDP, and automatically performing corrective actions to remedy the misconfigurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration of network ports is performed, then network devices can be set up, but port misconfigurations occur leading to network access issues
Solution Approach 1:
The system automatically detects port misconfigurations by comparing port information from LLDP packets without requiring manual intervention. The network management system self-diagnoses the issue by identifying mismatches in VLAN IDs, MTU, and other port parameters between connected devices, and automatically generates remediation actions.
Solution Approach 2:
The system continuously monitors network port configurations by exchanging LLDP packets between connected devices. When a misconfiguration is detected (such as mismatched VLAN IDs or MTU values), the system provides feedback by generating alerts and automatically performing corrective actions to restore proper network connectivity.
2Loss of time
If port misconfigurations are detected and remediated automatically, then network downtime is reduced, but system complexity increases
Solution Approach 1:
The system proactively detects port misconfigurations before they cause significant network disruptions. By continuously monitoring port parameters through LLDP packets and comparing configurations between connected devices, the system identifies issues early and automatically remediates them, preventing extended network downtime.
Solution Approach 2:
The network management system acts as an intermediary between connected network devices. It collects port information from LLDP packets, analyzes configurations, and coordinates automatic remediation actions. This intermediary approach centralizes the complexity of detection and remediation logic, isolating it from the actual network devices while minimizing their downtime.
3Measurement precision
If detailed port information is collected and analyzed, then misconfigurations can be accurately detected, but information processing complexity increases
Solution Approach 1:
The system uses LLDP packets, which are a universal networking protocol, to collect multiple types of port information simultaneously. A single LLDP packet contains VLAN IDs, MTU, port identifiers, and other critical parameters. This multi-functional approach allows the system to gather comprehensive port configuration data through a standardized protocol, reducing the need for multiple separate information collection mechanisms.
Solution Approach 2:
The system collects port information by copying data from LLDP packets exchanged between connected devices. Instead of directly accessing device configurations, the system uses the standardized LLDP protocol to obtain copies of port parameter information, which are then compared for mismatches. This copying approach simplifies information collection while maintaining detection accuracy.
Data Source
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AI summary
Techniques are described for determining port misconfiguration between network devices. For example, a network management system comprises a memory and one or more processors in communication with the memory and configured to: obtain information associated with one or more ports of a plurality of network devices; determine, based on information associated with a port of a first network device of the plurality of network devices and information associated with a port of a second network device of the plurality of network devices that is connected to the port of the first network device, whether there is a port misconfiguration of the first network device or the second network device; and perform, based on the determination that there is a port misconfiguration of the first network device or the second network device, an action to remedy the port misconfiguration of the first network device or the second network device.