VLAN Tag Range Mapping via Encapsulation Tables
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Solution Overview
Problem
Configuring and managing large numbers of VLAN tag mappings in network devices is a time-consuming and error-prone task, requiring numerous CLI commands, especially in large deployments.
Innovation Solution
Implementing encapsulation tables in network devices that allow VLAN tag mappings to be configured using range specifications, reducing the need for multiple commands by translating VLAN tags across multiple devices efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If VLAN tag mappings are configured using individual CLI commands for each mapping, then precise control over each mapping is achieved, but the time and complexity of configuration increases significantly
Solution Approach 1:
The patent combines multiple individual VLAN tag mapping configurations into a single encapsulation table entry. Instead of configuring each mapping separately through multiple CLI commands, the system allows users to define ranges of VLAN tags (e.g., VLAN 10-20 mapping to VLAN 30-40) that are automatically expanded into individual mappings, reducing configuration time while maintaining precision.
Solution Approach 2:
The patent introduces range parameters (start VLAN ID, end VLAN ID, target start VLAN ID, target end VLAN ID) to transform the configuration approach from discrete individual mappings to continuous range-based mappings. This parameter change enables the system to handle large numbers of mappings efficiently while preserving the ability to configure precise mapping relationships.
2Adaptability or versatility
If the number of VLAN tag mappings is increased to support large deployments, then network coverage and functionality are improved, but the number of required CLI commands and configuration complexity increases
Solution Approach 1:
The patent merges multiple VLAN tag mapping configurations into a single encapsulation table entry that represents a range of mappings. This consolidation reduces the number of configuration commands from tens or hundreds to just a few, making large-scale deployments manageable while maintaining full functionality.
Solution Approach 2:
The patent segments the VLAN tag space into manageable ranges that can be configured as single units. By allowing users to define start and end VLAN IDs, the system divides the large configuration task into smaller, more manageable range-based configurations that can be applied systematically across the network.
3Measurement precision
If manual configuration of each VLAN mapping is performed, then accuracy of each mapping can be verified, but the likelihood of human error increases with the number of mappings
Solution Approach 1:
The patent implements automatic verification and validation within the encapsulation table configuration system. The system automatically checks for conflicts, validates range boundaries, and ensures mapping consistency without requiring manual verification of each individual mapping. This self-service approach reduces human error while maintaining mapping accuracy.
Solution Approach 2:
The patent incorporates feedback mechanisms that automatically validate encapsulation table configurations before applying them. The system provides real-time feedback on configuration errors, conflicts, or invalid ranges, allowing users to correct issues before they result in incorrect mappings, thereby improving both accuracy and reliability.
Data Source
AI summary
A command line interface in a network device provides for specifying Virtual Local Area Network (VLAN) tag manipulations using range mappings to avoid error-prone repetitive configuration. A flexible VLAN tag range mapping is described, where the original and transformed ranges can be specified for both inner and outer positions, as long as the number of tags on either side of the transformation is the same.