Distributed Gateway Packet Processing for Cloud Data Center Reliability
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Solution Overview
Problem
In cloud computing networks, centralized gateways lead to insufficient reliability and network performance issues due to bandwidth limitations and single-point failures, affecting overall network scalability and reliability.
Innovation Solution
A distributed gateway system is implemented, where each computing node has a local distributed gateway that processes packets, allowing cross-subnet transmission and maintaining network reliability even if a local gateway fails, by using PCIe links and network adapter controllers to modify and forward packets efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centralized gateway is used to distribute network traffic, then network management is simplified, but network reliability deteriorates due to single-point failure and bandwidth limitations
Solution Approach 1:
The patent divides the centralized gateway function into multiple distributed gateways, with each computing node having its own local gateway. This segmentation eliminates the single-point failure issue while maintaining manageable network operations through localized decision-making at each node.
2Device complexity
If a centralized gateway is used for packet processing, then device complexity is reduced, but network performance deteriorates due to bandwidth constraints
Solution Approach 1:
The patent segments the gateway processing function across multiple computing nodes, allowing each node to independently process packets locally. This eliminates the bandwidth bottleneck of a centralized gateway while distributing the processing complexity across multiple simpler local gateways.
Solution Approach 2:
The patent transitions from a single centralized gateway in one location to multiple distributed gateways across different computing nodes, adding spatial distribution as a new dimension. This dimensional change enables parallel packet processing, significantly improving network throughput and performance.
3Ease of operation
If packets are routed through a centralized gateway for cross-VLAN communication, then network control is centralized, but network scalability is limited
Solution Approach 1:
The patent segments the network control function by enabling each computing node to independently perform gateway operations locally. This allows the network to scale horizontally by simply adding new computing nodes with local gateways, without requiring increased capacity at a centralized gateway point.
Data Source
AI summary
A cloud computing data center system includes a first server, a second server, a cloud management platform, and a switch. The first server includes a first computing node and a first distributed gateway. The first distributed gateway receives a management packet sent by the cloud management platform. The first distributed gateway records network information of the second VLAN. A first virtual machine sends a first service packet that carries service data to a second virtual machine. The first distributed gateway receives the first service packet, generates a second service packet by modifying the first service packet based on the network information of the second VLAN, and sends the second service packet to the switch. A second distributed gateway receives the second service packet forwarded by the switch, and sends the second service packet to the second virtual machine. In this way, network reliability may be improved.