SD-WAN Packet Coalescing Into Jumbo Frames for LAN Throughput
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Solution Overview
Problem
SD-WAN service providers experience throughput wastage due to an imbalance between the Maximum Transmission Unit (MTU) limitation of data packets from public clouds and the throughput capacity of their LAN, as they transmit data packets with smaller sizes than the LAN's capacity, limiting the system's performance and wasting allocated resources.
Innovation Solution
Coalescing multiple data packets into jumbo frames, which have a size greater than the MTU limit, to maximize throughput by allocating slots or variable sizes based on packet sizes, and separating them back into individual packets at the destination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data packets with MTU limitation less than LAN MTU limit are transmitted individually, then packet compatibility with public cloud is maintained, but LAN throughput capacity is wasted
Solution Approach 1:
Multiple individual data packets are merged into a single jumbo frame for transmission across the LAN. The source service coalesces multiple packets into one frame with size greater than the individual packet size limit, enabling efficient use of LAN throughput capacity while maintaining compatibility with public cloud MTU limitations through subsequent splitting at the destination service.
2Productivity
If hardware capabilities are leveraged to achieve high throughput, then LAN throughput capacity is maximized, but SD-WAN service flexibility is reduced
Solution Approach 1:
The packet transmission parameters are dynamically adjusted based on the MTU limitations of the underlying network. The source service modifies packet sizes by coalescing them into jumbo frames when LAN capacity allows, and the destination service splits them back into individual packets. This parameter change approach enables throughput optimization without requiring specialized hardware, maintaining SD-WAN service flexibility through software-based adaptation.
Data Source
AI summary
The systems and methods disclosed herein provide for coalescing data packets into jumbo frames in order to maximize the throughputs inside the service provider Local Area Network (LAN), thereby increasing the amount of traffic forwarded between internal services. The systems and methods outlined herein enable a source service on a LAN to receive a plurality of data packets from a public cloud-based network (e.g., the Internet) having a packet size limit less than the MTU limit of the LAN, and coalesce the plurality of data packets into a jumbo frame having a size based on the MTU limit of the LAN. The jumbo frame is then transmitted over the LAN to a destination service on the LAN. The destination service then separates the jumbo frame back into the plurality of data packets for further transmission back to the public cloud-based network.