Route Tables

Traffic Routing and Flow Control

Route Table Basics

Main Route Table

Default route table for VPC, controls routing for subnets not explicitly associated

Custom Route Tables

User-created route tables for specific routing requirements

Local Route

Automatically created for VPC CIDR block, cannot be modified or deleted

Route Tables Exam Tips

  • • Each subnet must be associated with exactly one route table
  • • Local route for VPC CIDR cannot be modified or deleted
  • • Most specific route takes precedence (longest prefix match)
  • • Public subnets need route to Internet Gateway (0.0.0.0/0 → IGW)
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