AWS — VPC Route Table Overview

Introduction to AWS VPC Route Table — What is Route Table in VPC?

AWS — VPC Route Table

TL;DR

A route table contains a set of rules, called routes, that are used to determine where network traffic from your subnet or gateway is directed. To put it simply, a route table tells network packets which way they need to go to get to their destination.

VPC Route Table Key points

1. Each subnet in your VPC must be associated with a route table, which controls the routing for the subnet (subnet route table). A subnet can be explicitly associated with custom route table.
2. Main route table automatically comes with VPC. It controls the routing for all subnets that are not explicitly associated with any other route table.
3. Custom route table is empty, by default and you add routes as needed.
4. A subnet can only be associated with one route table at a time, but you can associate multiple subnets with the same subnet route table.
5. Every route table contains a local route for communication within the VPC.
6. Gateway route table — it’s associated with an internet gateway or a virtual private gateway (gateway route table).
7. You can associate a route table with an internet gateway or a virtual…