VLAN Assignment for Unaware Devices via Wireless Headers
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Solution Overview
Problem
VLAN-unaware devices in computer networks cannot be effectively integrated into VLAN-enabled networks due to lack of support for VLAN functionality, which hinders secure and efficient communication.
Innovation Solution
A method and apparatus for assigning a virtual local area network identifier (VID) to data units by determining it based on identifiers from wireless headers, using a Tunnel-Termination Classification Engine that identifies relevant parameters and applies them to a VID assignment rules repository, such as a ternary content addressable memory (TCAM) or hash table, to assign appropriate VIDs to untagged data units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If VLAN functionality is required for effective network operation, then network security and manageability are improved, but VLAN-unaware devices cannot be integrated into the network
Solution Approach 1:
The patent introduces a VLAN assignment device (such as a wireless access point or network switch) that acts as an intermediary between VLAN-aware and VLAN-unaware devices. This device automatically assigns VLAN identifiers to data units from VLAN-unaware devices based on pre-configured mapping rules, enabling these devices to communicate over VLAN-enabled networks without requiring native VLAN support. The intermediary translates between the two environments, resolving the contradiction between security requirements and device compatibility.
2Reliability
If VLAN identifiers are manually assigned to devices, then network security and segmentation are improved, but network configuration complexity and time consumption increase
Solution Approach 1:
The patent implements automatic VLAN assignment where the network infrastructure itself performs the VLAN identifier assignment without requiring manual intervention. The VLAN assignment device automatically extracts identifying information from incoming data units (such as source/destination addresses or protocol types) and assigns appropriate VLAN identifiers based on pre-configured mapping rules. This self-service mechanism eliminates time-consuming manual configuration while maintaining proper network segmentation and security policies.
3Adaptability or versatility
If VLAN-unaware devices are integrated without VLAN support, then device compatibility is improved, but network traffic management and security control deteriorate
Solution Approach 1:
The patent employs pre-configured VLAN mapping rules that define how identifying information in data units maps to specific VLAN identifiers. These mapping rules are established in advance by network administrators, creating a predetermined framework for traffic management. When VLAN-unaware devices send data units, the VLAN assignment device automatically applies these pre-configured rules to assign appropriate VLAN identifiers, enabling effective traffic management and security control without requiring real-time manual intervention or complex processing.
Data Source
AI summary
Methods and apparatus for integrating VLAN-unaware devices into VLAN-enabled networks are described. For example, a method of assigning a virtual local area network identifier (VID) to a data unit may include receiving a data unit encapsulated in a wireless header from a source host via a wireless access point, wherein the data unit is addressed to a target host. A VID is determined based at least in part on an identifier of a wireless network included in the wireless header, and the VID is assigned to the data unit.