Multi-Tenant Node Migration Using Overlay Tunnel Preconfiguration
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Solution Overview
Problem
Existing multi-tenant systems face challenges in efficiently moving tenants between nodes with minimal disruption, particularly in managing network overlays and underlays, which can lead to service interruptions and inefficiencies.
Innovation Solution
A system is implemented with a tenant move engine that facilitates seamless migration of tenants by managing overlay and underlay networks, utilizing a dataplane node shared across tenants, and moving connector addresses to new nodes while maintaining consistent tunnel configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tenant migration is performed in existing multi-tenant systems, then tenant movement capability is achieved, but service interruptions and disruptions occur
Solution Approach 1:
The system performs preliminary actions by establishing tunnel connectivity between the source node and target node before actually migrating the tenant. The overlay network configuration is prepared in advance, and the target node is pre-configured with necessary network parameters. This ensures that when the tenant is moved, the network path is already ready, preventing service interruptions.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of overlay tunnels that mediate the connection between source and target nodes during tenant migration. These tunnels act as a bridge, allowing continuous network communication even as the tenant transitions between physical nodes. The intermediary tunnel ensures that network services remain uninterrupted during the migration process.
2Reliability
If complex network overlay and underlay management is implemented, then network connectivity is maintained, but system complexity increases
Solution Approach 1:
The system segments the network management into distinct layers: the underlay network handles physical connectivity and infrastructure, while the overlay network handles virtual tenant connectivity and migration. This segmentation allows each layer to be managed independently with appropriate complexity level. The control plane is also separated from the data plane, enabling centralized management of complex overlay configurations without affecting underlying network operations.
Solution Approach 2:
The patent uses copying mechanisms to replicate network configuration data and tunnel parameters between source and target nodes during migration. Instead of manually reconfiguring complex network parameters, the system copies the overlay network configuration from the source node to the target node, maintaining connectivity while simplifying the migration process. This copying approach reduces the operational complexity of managing network overlays during tenant movement.
Data Source
AI summary
Disclosed is a cloud services exchange platform that provides for multi-tenant orchestration with a flexible underlay facilitating tenant move with minimal disruption. Multi-tenant node engines are adapted to orchestrate the instantiation, hosting, and/or provisioning of services to one or more endpoints on behalf of a customer. Multiple dataplanes are associated with the cloud services exchange platform.