General Information About DirectLink Connections
A DirectLink connection is a physical connection between your network and a DirectLink location, which corresponds to a physical site of 3DS OUTSCALE infrastructure. This connection consists in a 1-Gb Ethernet or 10-Gb Ethernet fiber-optic cable that enables you to directly access your Cloud resources placed in the Region corresponding to this location without using the Internet. As a location corresponds to an Availability Zone (AZ) of a Region, you can connect to any location of this Region to access your resources in the whole Region.
If your resources are placed in only one AZ of a Region, we recommend creating a connection between your network and the corresponding location to reduce latency.
One end of this cable is connected to your router and the other end is connected to a 3DS OUTSCALE DirectLink router through the datacenter meet-me room (MMR). To create a DirectLink connection, your network must:
Have a router or a fiber-optic cable in the same datacenter as the DirectLink location.
- Be connected to a DirectLink router using a single-mode fiber with an LC connector: 1000BASE-LX (1,310nm) for 1-Gb Ethernet or 10GBASE-LR (1,310nm) for 10-Gb Ethernet.
Have a router that supports Border Gateway Protocol (BGP) and that is configured to communicate with the DirectLink router using the Autonomous System number (ASN) for 3DS OUTSCALE. Thus, the DirectLink router becomes your neighbor.
The ASN for 3DS OUTSCALE depends on the Region:
- 50624 for the eu-west-2 Region
- 53306 for the us-west-1 and us-east-2 Regions
- 132418 for the cn-southeast-1 Region
If your internal network is not in the same datacenter as a DirectLink location, you can ask any network service provider to thread a cable there for you. Once you have requested a DirectLink connection, 3DS OUTSCALE sends you a Letter of Authorization (LOA) that allows you to connect your network to the corresponding DirectLink router. You then need to give this letter to your network service provider, who will ask the datacenter to connect your fiber-optic cable to the DirectLink router to create the connection.
You can create DirectLink connections to access your resources that are in VPCs only. By default, a VPC cannot be accessed from the Internet. DirectLink connections enable you to reach your VPC directly from your internal network, which reduces latency and improves throughput performance. The VPC containing your resources must have at least one subnet and a virtual private gateway attached to it.
The security groups used for the VPC must allow flows coming from your internal network.
A connection can be in one of the following states:
requested: You have requested a connection. The connection stays in the
requestedstate until 3DS OUTSCALE sends you the LOA by email.
pending: 3DS OUTSCALE has approved the connection and has sent you the LOA, and the connection is being initialized.
available: The network link is plugged to both your router and the DirectLink router, and the connection is ready for use.
down: The network link is down.
deleting: You requested to delete the connection. The connection stays in the
deletingstate until 3DS OUTSCALE deletes it.
deleted: The connection is deleted.
DirectLink Connections and Private Virtual Interfaces
To access your resources using a DirectLink connection, you must configure this connection with one or more private virtual interfaces. A private virtual interface corresponds to a network path between your internal network and one of your VPCs, specified using the virtual private gateway attached to it. You need a private virtual interface for each VPC you want to access, and you can create several private virtual interfaces for a same DirectLink connection.
When creating a private virtual interface, you specify:
- A DirectLink connection:
- Using Cockpit, the name and ID of a DirectLink connection.
- Using AWS CLI, the ID of a DirectLink connection.
- A name for the private virtual interface.
A VLAN for each virtual interface to partition the connection into several network paths. You must use a unique VLAN for each private virtual interface created for a same DirectLink connection.
The Border Gateway Protocol (BGP) Autonomous System Number (ASN). For more information, see the General Information About DirectLink Connections section above.
A private virtual gateway in the
For more information, see Creating a Private Virtual Interface.
You can also create a private virtual interface to be owned by another 3DS OUTSCALE account. This type of private virtual interface, called hosted private virtual interface, needs to be confirmed by its intended owner before it becomes available for handling traffic. For more information, see Creating a Hosted Private Virtual Interface and Accepting a Hosted Private Virtual Interface.
A private virtual interface can be in one of the following states:
confirming: The virtual interface is pending confirmation from its owner. After 7 days, if the virtual interface is not confirmed, its state becomes
pending: The virtual interface is created but remains in the
pendingstate until both your router and the DirectLink router are configured.
available: The virtual interface can forward traffic.
deleting: The virtual interface is pending deletion. The virtual interface remains in the
deletingstate until 3DS OUTSCALE removes the DirectLink router configuration.
deleted: The virtual interface is deleted and cannot forward traffic anymore.
rejected: The virtual interface has been deleted when it was in the
expired: The owner of the virtual interface has not confirmed its creation within the 7-day limit. The virtual interface can no longer be used and you need to create a new one.
The following schema shows a DirectLink infrastructure: