DTFTP Server Synchronization for Cable Network Provisioning
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Solution Overview
Problem
The existing cable network infrastructure, optimized for one-way downstream communication, requires significant manual effort and is prone to human error when updating shared secrets and filter configurations for two-way digital services, leading to inefficiencies and security vulnerabilities in DOCSIS environments.
Innovation Solution
A system and method for automatically synchronizing provisioning parameters between dynamically generated boot file servers and CMTSs using SNMP or proprietary scripts, eliminating the need for manual intervention and ensuring secure updates of shared secrets and filter groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual updates are used for shared secrets and filter configurations, then flexibility in updating individual parameters is maintained, but human error increases and update speed decreases
Solution Approach 1:
The system enables automatic self-synchronization of provisioning parameters between the boot file server and CMTS devices. When parameters are updated on the server, the system automatically detects changes and pushes updates to all CMTS devices without manual intervention, eliminating human error while maintaining flexibility in parameter management
Solution Approach 2:
The system implements a feedback mechanism where the boot file server monitors for parameter changes and automatically triggers synchronization processes. The system receives feedback about parameter updates and automatically adjusts CMTS configurations accordingly, creating a closed-loop system that ensures consistency across all devices
2Productivity
If manual intervention is required for provisioning parameter updates, then system complexity is reduced, but time consumption increases and efficiency decreases
Solution Approach 1:
The system performs preliminary configuration of synchronization mechanisms during the boot file generation process. Provisioning parameters are pre-validated and organized in a structured manner, so that when updates are needed, the system can quickly identify and push only the changed parameters to CMTS devices without time-consuming manual configuration
Solution Approach 2:
The patent replaces manual mechanical operations with automated electronic processes. The system uses computer-based detection, validation, and transmission mechanisms to substitute for manual administrative tasks, thereby reducing time consumption and improving efficiency while maintaining precise control over provisioning parameters
3Reliability
If shared secrets are updated manually, then security control is maintained, but security vulnerabilities increase due to human error and delays
Solution Approach 1:
The system automatically manages shared secret updates by detecting changes on the boot file server and pushing updated secrets to all CMTS devices simultaneously. This self-service approach eliminates human error in secret management while maintaining secure control, and the automatic process ensures rapid deployment of security updates across the entire network
Solution Approach 2:
The system maintains continuous security through automatic, real-time synchronization of shared secrets. Rather than periodic manual updates, the system continuously monitors for changes and immediately propagates updates to all CMTS devices, ensuring that security parameters are always current and eliminating delays that could create security vulnerabilities
4Reliability
If filter configurations are updated manually, then detailed control over individual filter settings is maintained, but configuration errors increase and synchronization across network devices becomes complex
Solution Approach 1:
The system implements feedback mechanisms that automatically detect filter configuration changes on the boot file server and trigger synchronized updates to all CMTS devices. The system monitors for changes, validates the updated filter configurations, and automatically pushes them to the appropriate devices, ensuring consistency across the network while maintaining detailed control over individual filter settings
Solution Approach 2:
The system segments the filter configuration management into discrete, manageable components. Individual filter settings are maintained as separate provisioning parameters that can be updated independently, and the synchronization process handles each parameter separately. This segmentation simplifies the overall synchronization complexity while allowing detailed control over specific filter configurations
Data Source
AI summary
A system and method for managing provisioning parameters in a cable network. A dynamic TFTP (DTFTP) server and a CMTS manage the provisioning of devices in a cable network. The DTFTP server and the CMTS share common provisioning parameters. A provisioning parameter has a name and a value. When changes are made in the value of a provisioning parameter that is also used by a CMTSs supported by that DTFTP server, the DTFTP server securely communicates the new provisioning parameter values to each such CMTS. In one embodiment of the present invention, the DTFTP server pushes the new provisioning parameter values to the CMTSs. In another embodiment of the present invention, a poller pulls the provisioning parameters from the DTFTP server to a central datastore where changes in provisioning parameters used by the CMTSs supported by the DTFTP are identified. The changed provisioning parameter values are pushed from the central datastore to the CMTSs.