FlexE Slot Negotiation via Receiving End Initiation
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Solution Overview
Problem
Inconsistent slot configurations between network devices deployed with FlexE technology hinder effective communication, leading to potential long-time service interruptions when link faults occur.
Innovation Solution
A slot negotiation method where a receiving communication apparatus proactively sends request information to a transmitting communication apparatus to initiate FlexE slot negotiation once link faults are recovered, ensuring timely synchronization of slot configurations and minimizing service disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitting end initiates FlexE slot negotiation after link fault recovery, then slot configuration consistency can be achieved, but service interruption time is prolonged due to waiting for the transmitting end to detect and initiate negotiation
Solution Approach 1:
The patent inverts the traditional negotiation initiation role: instead of the transmitting end initiating slot negotiation after link recovery, the receiving end actively sends a negotiation request to the transmitting end. This role reversal eliminates the delay caused by waiting for the transmitting end to detect and initiate negotiation, thereby reducing service interruption time while ensuring slot configuration consistency.
Solution Approach 2:
The receiving end performs preliminary action by proactively sending a negotiation request immediately upon detecting link recovery, rather than waiting for the transmitting end to initiate the process. This preliminary action accelerates the negotiation start time and reduces overall service interruption duration.
2Loss of time
If the receiving end proactively initiates negotiation request, then service interruption time is reduced, but protocol complexity increases due to additional request sending functionality
Solution Approach 1:
The receiving end is equipped with multi-functionality: it can both receive data normally and proactively initiate negotiation requests when needed. This universal capability allows the receiving end to adapt to different scenarios (normal operation and fault recovery) without requiring separate dedicated devices, thereby managing complexity while achieving faster recovery.
3Ease of operation
If slot negotiation is delayed until transmitting end detection, then device operation simplicity is maintained, but communication reliability deteriorates due to inconsistent slot configurations
Solution Approach 1:
The receiving end monitors link status and provides feedback by sending negotiation requests when recovery is detected. This feedback mechanism ensures that slot configuration consistency is maintained without requiring complex proactive detection logic at the transmitting end, thereby preserving ease of operation while improving communication reliability.
Data Source
AI summary
Embodiments of this application disclose a slot negotiation method, where the method is implemented by a first communication apparatus serving as a receiving end. The first communication apparatus sends request information to a second communication apparatus serving as a transmitting end, where the request information requests the second communication apparatus to initiate a negotiation request for switching a FlexE slot. Then, the first communication apparatus receives the negotiation request sent by the second communication apparatus based on the request information.