Multi-Chassis EtherChannel Auto-Discovery via Centralized Tracking
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Solution Overview
Problem
Existing multi-chassis ether-channel (MCEC) configurations in fabric-based networks require complex manual configurations and direct links between network devices, making them cumbersome for network administrators and prone to errors, especially in large-scale environments.
Innovation Solution
Implementing an automatic configuration method using a centralized host tracking database or network controller to detect and establish MCEC connections without the need for direct links, leveraging logical L2 fabric connectivity over a L3 underlay, allowing for dual homing active-active services without additional user-specified configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration is used for MCEC, then connection reliability is improved, but configuration complexity increases
Solution Approach 1:
The system enables automatic discovery and configuration of MCEC connections through peer devices autonomously exchanging capability information and establishing connections without manual administrator intervention. The fabric nodes automatically detect peer devices, negotiate capabilities, and configure the multi-chassis etherchannel, eliminating complex manual configuration while maintaining reliable connections through automated capability validation.
2Stability of the object's composition
If direct links are required between peer devices, then connection stability is improved, but network complexity increases
Solution Approach 1:
The invention introduces a fabric-based logical L2 connectivity as an intermediary mechanism that replaces the requirement for direct physical links between peer devices. The fabric nodes act as mediators, establishing logical connections through the fabric infrastructure that provide the same stability as direct links without requiring physical direct connectivity, thereby simplifying the network topology.
3Ease of operation
If automatic discovery is implemented, then ease of operation is improved, but peer detection capability must be enhanced
Solution Approach 1:
The system performs preliminary capability advertisement where peer devices proactively announce their MCEC capabilities and identifiers to the fabric before actual connection establishment. This preliminary action enables automatic discovery by pre-registering device information in the fabric, allowing subsequent automatic pairing and connection establishment without complex real-time detection protocols.
Data Source
AI summary
Methods and system are disclosed which can simplify the configuration of a MCEC in a fabric environment such that is may become automatic. Furthermore, centralized identities (such as a host tracking database and/or a network controlled) may be employed to detect the presence of a MCEC. Requiring the creation of direct links between network devices participating in the MCEC may be avoided. Furthermore, logical L2 fabric connectivity (over a L3 fabric underlay) may be utilized to provide dual homing active-active services without additional configuration, as the tracking of peer network devices may be performed in a centralized manner. For example, a host tracking database or a network controller may be employed for peer tracking.