Session Protection via Capability Signaling After Session Failure
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Solution Overview
Problem
Network services are interrupted due to abnormal session termination or session flapping, which is difficult to diagnose and affects network performance.
Innovation Solution
A method and system for session protection that involves determining session failures and sending session establishment packets with capability information indicating the lack of protocol packet filtering capability, ensuring that new sessions are established without filtering capabilities, thereby preventing protocol packet termination and maintaining network service availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If session filtering capability is enabled to protect network services, then network service reliability is improved, but session establishment complexity increases
Solution Approach 1:
The patent applies preliminary action by declaring the lack of filtering capability in advance during session establishment through capability information in session packets. This allows the receiving device to know beforehand that filtering cannot be performed, preventing session termination issues before they occur, while avoiding the complexity of implementing and configuring filtering mechanisms.
2Reliability
If failure diagnosis is performed to identify session termination causes, then network service reliability is improved, but diagnostic time and system resources are consumed
Solution Approach 1:
The patent implements feedback by sending capability information about filtering capability (or lack thereof) during session establishment. This provides immediate feedback to both devices about the session's filtering capability, enabling quick diagnosis of session termination issues without requiring complex diagnostic procedures, thus reducing diagnostic time while maintaining reliability.
Data Source
AI summary
A method includes: determining that a failure occurs in a session between a first device and a second device; and sending, to the second device after the failure occurs, a first session establishment packet used to establish a new session, where the first session establishment packet carries capability information of the first device, and the capability information of the first device indicates that the first device does not have a capability of filtering a protocol packet for the new session.