CMTS CLI Vendor Name Display via MAC OUI Database Mapping
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Solution Overview
Problem
System administrators managing cable data networks face challenges in troubleshooting issues specific to cable modems from particular manufacturers, as vendor information is not typically displayed in standard Command Line Interface outputs from Cable Modem Termination Systems (CMTS), making it difficult to identify the manufacturer of a cable modem during diagnostic processes.
Innovation Solution
Incorporating a database that maps Company IDs from the MAC addresses to Company Names within the CMTS, allowing Command Line Interface outputs to display vendor information for cable modems, and using the IEEE Organizationally Unique Identifier (OUI) to generate Universal LAN MAC addresses, which includes the 24-bit high-order value for vendor identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If vendor information is not displayed in standard CLI outputs, then the CLI output format remains simple and standardized, but system administrators cannot quickly identify the manufacturer of cable modems for troubleshooting
Solution Approach 1:
The patent segments the vendor identification function from the core CLI command processing by introducing a separate database module that maps OUI values to vendor names. This allows the vendor identification to be added as an independent layer that enhances existing CLI outputs without modifying the core CLI protocol or command structure.
Solution Approach 2:
The patent introduces a vendor database as an intermediary component between the CMTS and the CLI output. This database receives OUI values from MAC addresses and returns corresponding vendor names, acting as a mediator that enriches the information available in CLI outputs without requiring changes to the underlying CMTS or CLI interface.
2Loss of information
If a database mapping Company IDs to Company Names is added to the CMTS, then vendor names can be displayed in CLI outputs, but the system complexity increases
Solution Approach 1:
The vendor database is designed with a universal structure that can map any OUI value to its corresponding vendor name, making it applicable to all cable modems regardless of manufacturer. This multi-functional approach allows a single database to serve all vendor identification needs without requiring vendor-specific modules or complex conditional logic.
Solution Approach 2:
The vendor database is pre-populated with Company ID to Company Name mappings before the CMTS operates. This preliminary action eliminates the need for real-time vendor identification logic during CLI operations, as the mappings are already available in the database for immediate retrieval, thus reducing operational complexity.
3Productivity
If vendor names are displayed in CLI outputs, then troubleshooting efficiency improves, but the CLI output format becomes more complex
Solution Approach 1:
The patent applies local quality by adding vendor name information selectively to specific CLI output fields where it provides maximum troubleshooting value, such as the modem identification section. Rather than fundamentally changing the entire CLI output format, the vendor name is integrated into existing structures, enhancing local information quality without global format complexity.
Data Source
AI summary
An algorithm extracts a company ID from a LAN MAC address corresponding to a cable modem connected to a CMTS, cross-references the company ID to a corresponding company name in a company-name database, and then displays the company name in a command line user interface.