9 Connect the Source and Target Networks

After you create the Virtual Cloud Network (VCN) in your Oracle Cloud Infrastructureenvironment, you should consider your requirements for connecting to the new network.

Understanding Connections to Your New VCN

The following is a high-level diagram of the connections between your Oracle Cloud Infrastructure Compute Classic network (the source of your migration), the Oracle Cloud Infrastructure network (the target of your migration), and your on-premises data center network.

Description of the illustration fastconnect_architecture.png

For information about the connection between your on-premises data center and your Oracle Cloud networks, see Connect Your On-Premises Network to Your Oracle Cloud Infrastructure Network. These connections are identified by items 1 and 3 in the diagram.

About Connecting the Source and Target Networks

When migrating from Oracle Cloud Infrastructure Compute Classic to Oracle Cloud Infrastructure, you can configure a connection between an IP network in Oracle Cloud Infrastructure Compute Classic and a subnet in the Oracle Cloud Infrastructure VCN.

This connection is not necessarily a requirement. Depending on the types of workloads and application data you are migrating and the tools you are using, such a connection is typically optional.

In some cases, such as PaaS instances, you may need to establish a connection between the Oracle Cloud Infrastructure Compute Classic and the Oracle Cloud Infrastructure environments using a FastConnect or IPSec tunnel. If you are using tools provided in the Oracle Cloud Infrastructure Classic Migration Tools image to migrate your workloads, you don't have to establish a connection.

For example, this connection is not required if you are migrating workloads using migration tools such as Oracle Cloud Infrastructure Classic Discovery and Translation Tool or Oracle Cloud Infrastructure Classic VM and Block Storage Migration Tool. However, when you migrate specific platform cloud service workloads to Oracle Cloud Infrastructure, you might need to use this connection to transfer your applications, data, and configuration settings to the new Oracle Cloud Infrastructureenvironment. Refer to the specific migration documentation or contact your Oracle representative for more information.

Instructions for connecting the two networks are available in the Access to Oracle Cloud Infrastructure Classic topic in the Oracle Cloud Infrastructure documentation.

For information about connecting the shared network in Oracle Cloud Infrastructure Compute Classic environment to Oracle Cloud Infrastructure, see Set Up VPN Connection between Shared Network and Oracle Cloud Infrastructure in Using Oracle Cloud Infrastructure Compute Classic.

Note:

If the same IP address ranges have been retained in the Oracle Cloud Infrastructure network configuration that are used in the Oracle Cloud Infrastructure Compute Classic network configuration, then you should not connect both networks at the same time over IPSec or FastConnect as this will introduce routing conflicts, unless a NATing solution is place.