Logical Port Administrative States for BNG Event Management
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Solution Overview
Problem
Current broadband network gateways (BNGs) lack defined logical port administrative states, which hinders the control plane subscriber access device's ability to manage events such as switchover, line card restarts, and user plane subscriber access device failures effectively.
Innovation Solution
The introduction of defined logical port administrative states allows the control plane subscriber access device to identify triggering events associated with logical ports and assign appropriate administrative states, enabling it to manage and respond to various system events and scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If defined logical port administrative states are introduced, then the control plane subscriber access device's ability to manage events (switchover, line card restarts, failures) is improved, but the device complexity increases
Solution Approach 1:
The patent segments the logical port state management by dividing it into distinct administrative states (e.g., enabled, suspended, testing, in-service, out-of-service). Each state represents a specific operational condition and triggers specific event handling behaviors. This segmentation allows the control plane to manage complex events systematically by transitioning ports between well-defined states rather than handling all events through a single monolithic management mechanism.
2Adaptability or versatility
If logical port administrative states are assigned based on triggering events, then the ability to respond to system events (subscriber logins, SGRP switchovers, device failures) is improved, but the control logic complexity increases
Solution Approach 1:
The patent implements dynamic state transitions where the logical port administrative state changes based on triggering events. The system dynamically responds to events such as subscriber logins, SGRP switchovers, and device failures by transitioning ports between states (e.g., from enabled to suspended during testing, or from out-of-service to enabled after recovery). This dynamic approach allows versatile event response while maintaining manageable control logic through predefined transition rules.
Solution Approach 2:
The system employs feedback mechanisms where the state of logical ports is continuously monitored and adjusted based on event triggers. When events occur (such as line card restarts or device failures), the control plane receives feedback about the current state and automatically transitions ports to appropriate states. This feedback loop enables adaptive event handling without requiring complex manual intervention or centralized control logic for every possible scenario.
Data Source
AI summary
In some implementations, a network device may identify a triggering event associated with a logical port. The logical port may be associated with a subscriber group that is associated with a user plane subscriber access device. The network device may assign, based at least in part on the triggering event, a logical port administrative state to the logical port.