VLAN Association Management for Network Switching Devices
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Solution Overview
Problem
Managing VLAN associations with network ports in modern information handling systems is complex due to the need for segregation of network traffic across physical locations and the limitations of traditional LAN-based topologies, which often result in inefficient bandwidth usage and security concerns.
Innovation Solution
A method and system for managing VLAN associations by receiving packets, extracting VLAN identification information, determining associated VLANs, and associating network ports with these VLANs, allowing for efficient forwarding of traffic across the network switching device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional LAN-based topology is used for network organization, then physical location correspondence is maintained, but network traffic segregation and security are compromised
Solution Approach 1:
The patent segments the network into multiple virtual LANs (VLANs) that can be independently configured and managed. Each VLAN represents a separate broadcast domain, allowing traffic from different departments or security zones to be isolated even when sharing the same physical infrastructure. This enables security policies to be applied per-VLAN without affecting other network segments.
Solution Approach 2:
The patent introduces a virtual dimension to the traditional physical network topology by implementing VLAN tagging and virtual switching. Network traffic is classified and routed based on VLAN identifiers rather than purely physical port connections, adding a logical layer that decouples physical topology from logical network organization and security boundaries.
2Reliability
If VLAN associations are manually configured for each port, then traffic segregation is achieved, but management complexity increases significantly
Solution Approach 1:
The patent implements automatic VLAN association mechanisms where the virtual switch dynamically learns and configures VLAN-port mappings based on received traffic patterns and predefined policies. The system automatically detects VLAN tags in incoming packets and establishes appropriate associations without requiring manual configuration of each port-VLAN relationship, significantly reducing management overhead.
Solution Approach 2:
The patent pre-configures VLAN parameters, security policies, and association rules in advance. When traffic arrives, the virtual switch applies these pre-established rules to automatically determine VLAN associations and forwarding behaviors, eliminating the need for real-time manual configuration and simplifying ongoing management.
3Productivity
If network traffic is flooded to all ports, then protocol compatibility is maintained, but bandwidth efficiency decreases
Solution Approach 1:
The patent implements intelligent forwarding mechanisms where the virtual switch monitors traffic patterns, VLAN associations, and network conditions to make dynamic forwarding decisions. Instead of indiscriminate flooding, the system uses feedback from VLAN tags and association tables to selectively forward traffic only to relevant ports, optimizing bandwidth utilization while maintaining protocol compatibility through standardized VLAN handling.
4Reliability
If physical switch hierarchies are duplicated across buildings, then network functionality is maintained, but infrastructure cost and complexity increase
Solution Approach 1:
The patent enables a single physical switch to perform multiple logical functions by implementing virtual switching capabilities that create independent VLAN instances. This allows one physical switch to replace what would traditionally require multiple physical switches across different locations, as VLANs can span multiple physical devices while maintaining isolated broadcast domains and security boundaries.
Data Source
AI summary
A system and method of managing virtual local area network (VLAN) associations with network ports includes receiving a first packet on a first port of a network switching device, extracting first VLAN identification information from the first packet, determining one or more first VLANs associated with the first port based on the first VLAN identification information, associating the first port with each of the one or more the first VLANs, and transmitting a second packet on the first port when a second VLAN associated with the second packet is included in the one or more first VLANs. In some embodiments, the first packet is received from an end station. In some embodiments, the first packet includes a VLAN identification field selected from a group consisting of a VLAN list field, a VLAN bitmap field, a Port VLAN ID type-length-value (TLV), and a Port Protocol VLAN ID TLV.