From the course: VPC Networking on AWS: Configuration, Security, and Connectivity
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Main route table - Amazon Web Services (AWS) Tutorial
From the course: VPC Networking on AWS: Configuration, Security, and Connectivity
Main route table
- [Instructor] In this lesson, we're looking at the main route table, sometimes called confusingly the default route table, and it's essential to understand its job. This main route table applies local routes for each virtual private cloud. When the CIDR range is defined for the virtual private cloud, defining how many IP addresses that can be used, that information is used to say, alright, all of these addresses that are used within the VPC, regardless of subnet can talk to each other. We're going to set up that routing by default and save each customer the time of doing that. So every single subnet in the virtual private cloud has a default local route applied because of either the main route table or because of a custom route table. But in this clip, we're just looking at the main route table, and if the main route table has been applied to the subnet in use, there's a local route allowing that traffic on that subnet to go to any other subnet in the VPC. So all subnets within each…
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