AWS VPC Transit Gateway - Hands On Learning!

Set up a transit gateway environment by creating three VPCs, associated subnets and internet gateways, and test inter-VPC connectivity using telnet while following a predefined input spreadsheet.

Create a VPC, subnet, internet gateway, and route tables; attach the internet gateway to the VPC and configure routes to enable internet access across the shared VPC.

Launch and configure three EC2 instances across the dev VPC, Cuba BPC, and shared VPC, using public subnets, auto-assign public IPs, security groups, and tags before launching.

In this hands-on lesson, learn to log into virtual machines using PuTTY and private keys, install the delete binary, and run Telnet tests across VPCs while clearing transit gateway routes.

Create a transit gateway, enable VPN ICMP support, and review default load table association and propagation with VPC attachments and the shared attachment feature.

Create VPC attachments to a transit gateway for the dev and qa VPCs, verify the default route table associations and propagations, and test connectivity between the VPCs.

Verify connectivity between Devon QE VPCs via the transit gateway after attachment, update the route tables to route traffic via the gateway, and test to confirm interconnection.

Create a shared VPC transit gateway attachment, verify associations and propagation, and test connectivity with telnet among VPCs, noting how custom route tables offer more control than defaults.

Create a new subnet in an existing VPC availability zone, launch VMs, and test connectivity to the same and to a shared VPC, with no transit gateway changes needed.

Add a new subnet in an unselected availability zone to a VPC attachment, then modify the transit gateway attachment to include it and verify cross-VPC connectivity.

Learn to share an AWS transit gateway across accounts by creating resource shares, accepting a cross-account VPC attachment, and verifying route table propagation.

Learn to create and share an AWS transit gateway with another account using AWS Resource Access Manager, accept the share in the second account, and verify regional availability.

Create a cross-account VPC setup by provisioning a VPC, a public subnet, an internet gateway, and routes, then launch an EC2 instance to test connectivity.

Create a VPC attachment across accounts, accept it in the first account, and verify Transit Gateway associations and propagation for proper routing.

Test cross-account VPC connectivity using a transit gateway, validating reachability among three VPCs in the first account and cross-VPC paths, and confirm routing updates before proceeding to custom routes.

Establish cross-account transit gateway sharing by creating a resource share with AWS RAM, attaching a VPC in the second account, updating routes, and validating connectivity through tests.

Learn to implement a transit gateway with custom route tables to control VPC connectivity. Clean up default associations and enable cross-account routing between Dev VPC, Cuba VPC, and shared VPCs.

Cleanup the default route table by removing all associations and propagations for the Transit Gateway attachment, then prepare to implement custom routes.

Implement a custom transit gateway route table, attach dev and qa VPCs, and configure associations and propagations to enable cross-VPC traffic; test connectivity to verify routing.

Implement a custom transit gateway route between dev and shared VPCs by creating and propagating routes, associating the shared VPC with the transit gateway, and verifying connectivity between the VPCs.

Implement a TGW custom route table between QA and cross-account dev VPCs, create and propagate VPC attachments, verify routes, and test two-way connectivity through the transit gateway.

Perform negative tests to verify that unconfigured routes fail and connectivity is blocked between VPCs through the transit gateway.

Conclude by implementing and validating custom route tables in the transit gateway, establishing connectivity between Devon and Cuba VPCs, and between Devon shared and Cuba, with confirmed internet access.