Replication Network Frame Balancing for Path Delay Mismatch
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Solution Overview
Problem
Replication networks face issues with frame loss and sequence number wraparound due to network performance imbalances and congestion, leading to reordering problems and memory exhaustion in redundancy boxes.
Innovation Solution
A path mismatch device is employed to track and remediate network performance imbalances by monitoring frame delays and memory consumption across multiple paths, using explicit or implicit signaling to adjust transmission rates and buffer management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If replication networks transmit data through multiple paths to ensure high availability, then reliability is improved, but network performance imbalances cause frame delays and sequence number wraparound
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device monitors frame sequence numbers from multiple paths and detects path mismatches. When a mismatch is detected (sequence number wraparound), the receiver sends feedback signaling to the transmitting device to adjust transmission parameters, thereby preventing frame loss while maintaining high availability through redundant paths
Solution Approach 2:
The system dynamically adjusts transmission parameters based on real-time path performance monitoring. The transmitting device modifies transmission behavior (such as pausing or adjusting frame rates) in response to detected path mismatches, allowing the network to adapt to changing conditions and maintain reliability without information loss
2Reliability
If replication networks use redundant data transmission paths, then reliability is improved, but memory exhaustion occurs in redundancy boxes due to frame reordering
Solution Approach 1:
The patent employs preliminary detection of path mismatches by monitoring sequence numbers before they cause memory exhaustion. By detecting wraparound conditions early and sending corrective signaling to the transmitter, the system prevents the accumulation of excessive buffered frames that would lead to memory exhaustion in redundancy boxes
3Loss of information
If network performance monitoring is implemented to detect path mismatches, then frame loss is prevented, but device complexity increases
Solution Approach 1:
The receiving device performs self-service by autonomously monitoring its own incoming frames from multiple paths, detecting sequence number wraparound conditions, and generating corrective signaling without requiring complex external control systems. This self-monitoring capability prevents frame loss while minimizing additional device complexity
Data Source
AI summary
Disclosed are systems, apparatuses, methods, and computer-readable media for balancing replicated frames in a replication network. A method includes: receiving, at a redundancy receiver, first frames from a first path and second frames from a second path, determining a network performance imbalance between a redundancy edge device to the redundancy receiver based on receiving the first frames and the second frames, and in response to determining a threshold of memory will be exceeded based on the delay between the first frames and the second frames, providing an indication to slow frames transmitted along the second path. In some aspects, a path mismatch device is configured to track replication frames and determine network performance imbalance. For example, the path mismatch device can identify one network is slower than another, and may provide remediation to balance network performance that maintains the integrity of the replication network.