Stateful Routing Service Flow Validation for Multi-Tenant Appliances
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing network appliances in data centers face challenges with scalability, high availability, complexity, single points of failure, and security breaches, particularly in multi-tenant environments, leading to potential data exfiltration and security attacks.
Innovation Solution
A stateful network routing service provides elastic scalability, automatic traffic rerouting, and secure managed traffic steering, using network virtualization to maintain routing rules transparently and reduce memory overhead by encapsulating packets, ensuring secure and resilient traffic routing across multiple environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network appliances are deployed in multi-tenant environments to provide networking services, then service capability and versatility are improved, but security risks and vulnerability to attacks increase
Solution Approach 1:
The patent segments network traffic into isolated tenant-specific flows, with each flow encapsulated in its own packet structure. This segmentation prevents cross-tenant traffic interference and limits the impact of security breaches to individual tenants rather than affecting the entire multi-tenant system.
Solution Approach 2:
The patent introduces an intermediary routing service that sits between network appliances and tenants, validating packets and enforcing security policies. This intermediary layer filters malicious traffic before it reaches network appliances and ensures proper routing, thereby reducing security risks while maintaining service capability.
2Productivity
If network appliances handle multiple tenant traffic to improve resource utilization, then productivity increases, but reliability and resistance to single points of failure decrease
Solution Approach 1:
The patent segments traffic handling across multiple network appliances, with each appliance responsible for specific tenant flows. This segmentation eliminates single points of failure because if one appliance fails, other appliances continue handling their assigned flows without affecting the entire system.
Solution Approach 2:
The patent dynamically changes routing parameters based on appliance health status and load conditions. When appliances fail or become overloaded, the system automatically reroutes traffic to healthy appliances, maintaining reliability while preserving high resource utilization through flexible load distribution.
3Ease of operation
If routing rules are maintained transparently to improve ease of operation, then ease of operation increases, but memory overhead and resource consumption increase
Solution Approach 1:
The patent extracts routing rule maintenance from the network appliances and centralizes it in a dedicated routing service. This extraction allows routing rules to be maintained transparently for ease of operation while the routing service optimizes memory usage through efficient data structures and caching strategies, reducing overall memory overhead.
Solution Approach 2:
The patent uses packet encapsulation with embedded flow validation information that acts as a lightweight copy of routing state. Instead of maintaining full routing tables in memory at each appliance, the system embeds essential routing information in packet headers, reducing memory overhead while maintaining transparent routing operation.
4Productivity
If network appliances are made scalable to handle increased traffic, then productivity increases, but device complexity and configuration difficulty increase
Solution Approach 1:
The patent creates a universal routing service that handles routing for all network appliances and tenants through a single standardized interface. This universality allows the system to scale traffic handling capacity by adding more appliances without increasing configuration complexity, as the routing service automatically manages routing rules for all appliances uniformly.
Data Source
AI summary
Systems and methods are provided to add flow validation information to packets of network traffic. Each packet can have flow validation information added corresponding to the source and destination of the packet. A stateful network routing service may intercept packets and obtain or generate flow validation information based on the source and destination of the packet. The stateful network routing service may add the information to the packet and transmit the enriched packet to a network appliance. The stateful network routing service may receive a second enriched packet from the network appliance. The stateful network routing service can compare the enriched packet with the second enriched packet. Based on the comparison of the enriched packets, the stateful network routing service can determine whether the packet should be transmitted to the destination or dropped.