Introduction
When we use Direct Connect (DX) with clients, there are several points for connecting it. This document provides an overview of these options.
Point to use DX resources
When we use Direct Connect (DX) with clients, there are several options for connecting it. This document provides an overview of these options.
- The Virtual Interface (VIF) and DX need to exist in the same account.
- A Virtual Private Gateway (VGW) can connect to only one VPC.
- A private VIF accepts the VPC CIDR which connects to the VGW.
- The datacenter ASN should not be the same as the AWS account ASN.
- The DXGW’s ASN can be the same as the AWS account ASN (VGW).
How do we prepare a backup plan?
When you use DX, you can use Site to Site VPN.
However, AWS recommends using the DXGW.
How do we access from another AWS Account?
DXGW can associate VGW in another AWS Account as shown below.
When to Use Transit Gateway?
The key difference between DXGW and Transit Gateway (TGW) is the number of VPCs they can connect to. DXGW can connect to a maximum of 10 VPCs, whereas TGW can connect to up to 5,000 VPCs. Therefore, use TGW when you need to connect more than 10 VPCs.
How do we monitor DX resources?
Currently, VIF has four metrics available for monitoring. While DX and DXGW do not have specific metrics, you may use CloudWatch Network Monitor. Note that this has not been tested yet.
