Jumbo Frames - Understanding, Building and Configuring


Jumbo Frames - Understanding, Building and Configuring

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Jumbo Frames - Introduction

In this course, you will be introduced to Jumbo Frames. We provide a detailed overview of Ethernet frames and how and what effect Jumbo Frames have when configured. Jumbo frames allow more than 1500 bytes of data by increasing the payload size per packet. We will review use cases and scenarios where Jumbo Frames are useful.

In this course, we provide a complete working demonstration - configuring a Jumbo Frame enabled network between 2 VPCs. We will deploy an EC2 instance within each VPC, each instance will be configured with a pair of ENIs. We will establish policy based routing such that we end up with 2 network paths between the instances - the 1st network path will have a 1500 MTU - utilizing Ethernet standard frames, and the second network path will have a 9000 MTU - utilizing Ethernet jumbo frames.



- [Instructor] Hello, and welcome to this Cloud Academy course on Jumbo Frames. Before we start, I'd like to introduce myself. My name is Jeremy Cook. I'm one of the trainers here at Cloud Academy specializing in AWS. Feel free to connect with either myself or the team here at Cloud Academy regarding anything about this course. You can email us at Alternatively, our online community forum is available for your feedback. In this training course, you'll be introduced to jumbo frames. Jumbo frames allow more than 1,500 bytes of data by increasing the payload size per packet, and thus increasing the percentage of the packet that is not packet overhead. Fewer packets are needed to send the same amount of usable data. Ethernet traffic moves in units called frames. The maximum size of frames is called the maximum transmission unit, MTU. When a network device gets a frame that's larger than its MTU, the data is either fragmented into smaller frames, or dropped. Historically, ethernet has a maximum frame size of 1,500 bytes. An ethernet packet larger than 1,500 bytes is called a jumbo frame. The generally accepted size for jumbo frames is 9,000 bytes. The agenda for this course is as follows. We'll review what jumbo frames are. We'll review use cases and scenarios where jumbo frames will be useful. We'll review limitations of jumbo frames, highlighting invalid configurations such as internet traversing network paths. Finally, we'll conclude our course with a complete demonstration, configuring a jumbo frame enabled network between two VPCs. We'll deploy an EC2 instance in each VPC. Each instance will be configured with a pair of ENIs. We'll establish policy-based routing such that we end up with two network paths between the instances. The first network path will have a 1,500 MTU, utilizing ethernet standard frames. And the second network path will have a 9,000 MTU, utilizing ethernet jumbo frames. The following prerequisites will be helpful for this course: an understanding of open systems interconnections model, OSI model, ethernet, TCP/IP, tcpdump and Wireshark, general networking, concepts such as routing and gateways. Finally, to build your own VPC jumbo frame enabled environment, you'll need an active AWS account. If you require an introduction to VPCs and associated networking concepts, then please consider taking the VPC related courses here on Cloud Academy.

About the Author
Learning Paths

Jeremy is a Content Lead Architect and DevOps SME here at Cloud Academy where he specializes in developing DevOps technical training documentation.

He has a strong background in software engineering, and has been coding with various languages, frameworks, and systems for the past 25+ years. In recent times, Jeremy has been focused on DevOps, Cloud (AWS, Azure, GCP), Security, Kubernetes, and Machine Learning.

Jeremy holds professional certifications for AWS, Azure, GCP, Terraform, Kubernetes (CKA, CKAD, CKS).