Virtual Cluster Switching for Scalable Network Topologies
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Solution Overview
Problem
Existing network switch systems face scalability limitations due to complex manual configuration requirements and topology restrictions, making it economically unviable to build large-scale switching systems using switch stacking.
Innovation Solution
A virtual cluster switch system that automatically configures physical switches using a control plane, allowing them to form a logical switch in an arbitrary topology without manual configuration, enabling dynamic expansion and cost-effective scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If switch stacking is used to increase throughput, then bandwidth capacity is improved, but device complexity and manual configuration requirements increase prohibitively
Solution Approach 1:
The patent implements self-service through automated discovery and configuration protocols. Switches automatically detect inter-switch links, negotiate roles, and configure forwarding tables without manual intervention. The control plane enables switches to autonomously join the cluster and receive configuration parameters dynamically, eliminating the need for complex manual port configuration that plagues traditional switch stacking.
Solution Approach 2:
The patent applies preliminary action by pre-defining cluster identifiers and control plane parameters before switches are deployed. When switches are added to the cluster, they automatically receive pre-configured identification and routing information through the control plane, eliminating the need for on-site manual configuration and enabling rapid deployment of additional switches to increase throughput.
2Quantity of substance
If switch stacking is used to build large-scale systems, then system size is improved, but topology flexibility is restricted
Solution Approach 1:
The patent implements dynamics by enabling the switching cluster to dynamically adapt its topology as switches are added or removed. The control plane continuously monitors the network state and automatically updates forwarding tables and routing paths. This dynamic reconfiguration capability allows the system to maintain optimal performance regardless of topology changes, supporting arbitrary physical arrangements while presenting a unified logical switch interface.
Solution Approach 2:
The patent applies segmentation by dividing the large-scale switching system into independent modular switches that can be deployed and configured separately. Each switch maintains its own control plane instance and can join or leave the cluster independently. This modular approach enables flexible topology construction where switches can be arranged in various physical configurations while the logical overlay network maintains consistent forwarding behavior.
3Manufacturing precision
If manual configuration is performed for switch stacking, then configuration precision is improved, but time consumption and labor requirements increase
Solution Approach 1:
The patent replaces the mechanical manual configuration process with automated control plane software. Instead of manually configuring each switch's ports, VLANs, and routing tables, the control plane automatically discovers the network topology and programs the forwarding tables. This substitution of manual mechanical configuration with automated software control maintains configuration precision while reducing deployment time from hours to minutes.
Solution Approach 2:
The patent implements feedback mechanisms where the control plane continuously monitors the switching cluster state and automatically adjusts configurations in response to detected changes. When new switches are added or links are modified, the control plane receives feedback about the topology change and automatically reconfigures the network to maintain optimal performance, eliminating the need for manual reconfiguration while preserving configuration accuracy.
Data Source
AI summary
One embodiment of the present invention provides a switch system. The switch includes one or more ports on the switch configured to transmit packets encapsulated based on a first protocol. The switch further includes a traffic management mechanism and a control mechanism. During operation, the control mechanism forms a logical switch based on a second protocol, receives an automatically assigned identifier for the logical switch without requiring manual configuration of the identifier, and joins a virtual cluster switch.