AWS Direct Connect:
- Private connection to transfer data between AWS Cloud and on-premise data center
- You need a local DX partner to using DX. You connect to the DX partner via fiber optic link. This is a physical link. In the physical link, you can create many virtual interfaces to connect to AWS VPC or AWS Services.
- AWS DX support dedicated connection with 1Gbps and 10 Gbps
- 1Gbps or higher: Work with AWS Partner Network or network provider to connect DX location.
- Less than 1Gbps: Work with AWS Partner Network who can create hosted connection for you.
- AWS DX support hosted connection capabilities of 1, 2, 5, 10 Gbps.
- Support AWS Transit Gateway, aside from configuring site-to-site VPN connections.
Common use cases:
- Transfer large datasets
- Hybrid cloud to satisfy regulatory requirements of private connectivity
- Develop and run real-time application data feeds
- Virtual interfaces is a logical channel that divided from physical dx link. You must create a virtual interface to begin using your DX connection. There are 2 types of virtual interfaces:
- Virtual Private interface: Connect to AWS VPC. One private virtual interface for each VPC or you can use AWS DX Gateway.
- Virtual Public interface: Connect to AWS public services such as S3, DynamoDB
- To access public resources on the remote AWS location, you have to setup public virtual interface and enable BGP session.
- Autonomous System Number (ASN) are used to identify networks that present a clearly defined external routing policy to the Internet.
- MTU (Maximum Transmission Unit):
- Virtual private interface: 1500 or 9001 (jumbo frames)
- Transit virtual interface for VPC transit gateway: 1500 or 8500 (jumbo frames)
- Virtual public interface: does not support jumbo frames
- LAG (Link Aggregation Group) group multiple DX connection into a single, managed connection.
- All connection in a LAG has same connection bandwidth
- Maximum connections in a LAG: 4
- All connections in the LAG must terminate at the same DX endpoint
- All connection is a LAG working in active/active mode
- Only available for dedicated 1G or 10GB connections
- DX Gateway is to use to connect multiple VPC in same or different AWS Regions via virtual private interface.
- DX Gateway is global available resource
- Enable to connect your on-premise data center to any AWS region (except China region).
- Can associate up to 10 VPC in different accounts with DX Gateway. The accounts must be in same AWS payer account ID.
- CloudTrail captures all API calls for DX as events
- Setup CloudWatch alarms to monitor metrics.
- You also can use tags for DX.
- Network ports you use and data transfer over the connection
- Pricing is per hour consumed per each port type.
- Data transfer out will be charged per GB
- Data transfer in is free in all locations
|Virtual interfaces per dedicated connection||50||Hard limit|
|Transit virtual interface per dedicated connection||1||Hard limit|
|Virtual interfaces per hosted connection||1||Hard limit|
|Active DX connection per Region per Account||10|
|Routes per BGP session on private VIF||100||Hard limit|
|Routes per BGP session on public VIF||1,000||Hard limit|
|Dedicated connections per LAG||4|
|LAGs per Region||10|
|DX Gateway per Account||200|
|Virtual private Gateway per DX Gateway||10||Hard limit|
|virtual interfaces (private or transit) per DX Gateway||30|