Cluster Interconnect Fabric Connectivity Verification
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Solution Overview
Problem
Complex cluster systems face challenges in simplified and automated verification of connectivity and troubleshooting, especially in large configurations with thousands of nodes, due to intricate interconnect structures and the need to distinguish between physical and logical connectivity.
Innovation Solution
A system with out-of-band management network interfaces and a cluster interconnect fabric that uses unique cable identities stored in cable connectors to provide a physical view of connectivity, enabling both in-band and out-of-band management, and IP-based management traffic over various media types, reducing the number of cables and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional in-band connectivity verification methods are used, then node communication capability can be checked, but the complexity of verification increases significantly in large cluster configurations with thousands of nodes
Solution Approach 1:
The patent introduces an out-of-band management network as an intermediary channel separate from the data network. This management network provides a dedicated path for connectivity verification that does not interfere with normal data traffic, enabling simplified verification even in large cluster configurations with thousands of nodes.
Solution Approach 2:
The patent segments the verification function from the data communication function by creating separate in-band and out-of-band management channels. This segmentation allows connectivity verification to be performed independently through the management network, reducing the complexity burden on the data network infrastructure.
2Reliability
If physical connectivity verification is performed manually in complex cluster systems, then connectivity issues can be identified, but the time and resources required for verification and troubleshooting increase significantly
Solution Approach 1:
The patent enables the cluster system to perform self-verification of connectivity through automated discovery mechanisms. The system automatically discovers and verifies physical connectivity relationships between nodes and switches using the out-of-band management network, eliminating the need for manual verification and reducing troubleshooting time.
Solution Approach 2:
The patent performs preliminary connectivity verification and discovery before the cluster becomes fully operational. By establishing the physical connectivity map in advance through out-of-band management, the system prepares connectivity information that can be quickly referenced during operation, avoiding time-consuming verification during critical moments.
3Loss of information
If detailed physical connectivity tracking is implemented, then accurate troubleshooting information is obtained, but the system complexity and maintenance requirements increase
Solution Approach 1:
The out-of-band management network serves as an intermediary that collects and maintains detailed physical connectivity information without adding complexity to the data network infrastructure. This separate management plane handles the overhead of tracking cable connections, node identities, and switch port mappings.
Solution Approach 2:
The patent creates a virtual copy or representation of the physical connectivity topology through software-based discovery and mapping. Instead of requiring physical labels or manual documentation, the system generates a digital twin of the connectivity structure that can be easily stored, updated, and queried.
Data Source
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AI summary
In a system having a cluster of system components interconnected by a cluster interconnect fabric, the system components include out-of-band management network interfaces to an out-of-band management network. The system is configured to use the cluster interconnect fabric and the out-of-band management network interfaces to determine the overall connectivity and status of the cluster.