CGN Backup Protection via Dynamic Scenario Adaptation
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Solution Overview
Problem
Existing backup protection methods for Carrier Grade Network Address Translation (CGN) are limited in their applicability to various application scenarios, making them unsuitable for more complex deployments.
Innovation Solution
A backup protection method and device for CGN that detects service exceptions and determines the deployment scenario to implement appropriate backup modes, such as protection switching between private and public network users, tunnel, label, and type switching, enhancing reliability and stability by adapting to different deployment configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If simple hot backup or cold backup is used, then the backup mechanism is easy to implement, but the applicability to different application scenarios is limited
Solution Approach 1:
The patent implements dynamic backup mode selection where the system automatically determines whether to use hot backup, cold backup, or no backup based on real-time detection of service exceptions and the current deployment scenario. This dynamic adaptation allows the same backup mechanism to serve multiple application scenarios effectively, resolving the contradiction between versatility and complexity.
Solution Approach 2:
The system changes the backup parameter state based on detected service exception conditions and deployment scenarios. By adjusting the backup mode parameter dynamically according to system state and configuration, the patent enables a single backup mechanism to adapt to different application scenarios without requiring multiple separate mechanisms, thus improving versatility while managing complexity.
2Reliability
If hot backup is used, then service continuity is maintained, but the complexity of implementing multiple backup modes increases
Solution Approach 1:
The patent creates a universal backup mechanism that can perform multiple backup functions (hot backup, cold backup, or no backup) depending on the deployment scenario and service exception conditions. This multi-functional design allows a single system to provide service continuity when needed while avoiding the complexity of implementing separate backup systems for different scenarios.
Solution Approach 2:
The system uses feedback from service exception detection and deployment scenario analysis to automatically select the appropriate backup mode. This feedback mechanism ensures service continuity is maintained when necessary while simplifying implementation by using automated decision-making rather than complex manual configuration for different backup modes.
3Device complexity
If cold backup is used, then device simplicity is maintained, but the response time for service restoration increases
Solution Approach 1:
The patent dynamically selects between cold backup and hot backup based on the detected service exception conditions and deployment scenario. When fast service restoration is critical, the system chooses hot backup despite increased complexity. When simplicity is prioritized and time constraints are flexible, cold backup is used. This dynamic adaptation resolves the contradiction between device simplicity and restoration time.
Data Source
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AI summary
A backup protection method and device for Carrier Grade network address Translation (CGN) are provided. In the method, occurrence of a service exception, which is included in service failures of a CGN device, on a service unit is detected; a deployment scenario of the CGN device is determined; and a backup mode corresponding to the determined deployment scenario is adopted, according to the determined deployment scenario, to implement backup protection. The technical solution addresses the problem that the relatively simplex use of either hot backup or cold backup in related art is inapplicable to more application scenarios and consequentially improves the reliability and the stability of a network.