BNG Access Control With Dedicated Primary-Backup Network Segments
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Solution Overview
Problem
In scenarios where multiple user equipments correspond to gateways in a primary and backup relation, network resources of these gateways can be improperly occupied due to shared network segments, leading to inefficient data routing.
Innovation Solution
Implement an access control method where distinct network segments are assigned based on the primary and backup gateway relationships, ensuring that each gateway is associated with a unique segment to prevent resource occupation, using a BNG CP to manage IP address assignments and route advertisement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a shared network segment is used for multiple gateways in primary and backup relation, then resource utilization is improved, but network resources are improperly occupied and routing efficiency deteriorates
Solution Approach 1:
The patent divides the network segment into multiple sub-segments, where each sub-segment is exclusively assigned to a specific gateway (primary or backup). This segmentation prevents improper occupation of network resources by ensuring that each gateway operates within its dedicated sub-segment, thereby resolving the contradiction between resource utilization and routing efficiency.
2Reliability
If distinct network segments are assigned to each gateway, then routing efficiency is improved, but system complexity increases
Solution Approach 1:
The patent employs a universal IP address management mechanism that can dynamically assign IP addresses from appropriate sub-segments based on the gateway's role (primary or backup). This multi-functional approach allows the same management system to handle different gateway configurations without increasing overall system complexity, while still maintaining distinct network segments for efficient routing.
Data Source
AI summary
An access control method. A BNG CP may receive a first message from first user equipment. The first message is used by the first user equipment to request to access a network, a primary gateway through which the first user equipment accesses the network is a first BNG, and a backup gateway through which the first user equipment accesses the network is a second BNG. After receiving the first message, the BNG CP may determine, from a first network segment, an IP address assigned to the first user equipment, and send the IP address of the first user equipment to the first user equipment. The first network segment is only used to assign an IP address to user equipment that accesses the network by using the first BNG as a primary gateway and the second BNG as a backup gateway.