Aviatrix Gateway to Oracle DRG

Overview

This document describes how to configure an IPsec tunnel between an Aviatrix Gateway and an Oracle Dynamic Routing Gateway (DRG).

Deployment Guide

For this use case, we will create an IPsec connection from DRG first and then configure a Site2Cloud connection at the Aviatrix Controller.

Creating an IPsec Connection from DRG

Note

Prerequisites

1. You have a DRG created and attached to a VCN.

2. You have an Aviatrix Gateway provisioned in a VPC/VNet. You will need this gateway’s public IP address and its VPC/VNet CIDR for the steps below.

1. Log in to your Oracle Cloud Console and create a route rule for the DRG.

   We need to modify the desired route table and create a route rule to take any traffic destined for the Aviatrix Gateway’s VPC/VNet CIDR and route it to the DRG.

   1. Under Core Infrastructure, go to Networking and click Virtual Cloud Networks.

   2. Click your VCN.

   3. Select the desired route table(s) for your VCN.

   4. Click Edit Route Rules.

   5. Create a new route rule as following and save it.

      Field	Description
      Target Type	Dynamic Route Gateway
      Destination CIDR Block	Aviatrix GW’s VPC/VNet CIDR (172.19.0.0/16 in this example)
      Target Dynamic Routing Gateway	Select the desired existing DRG

   

2. Log in to your Oracle Cloud Console and create security rules.

   We will edit the security list associated with your VCN subnets. We need to add two new rules: one ingress rule for traffic coming from the Aviatrix Gateway’s VPC/VNet and one egress rule for traffic destinating to the Aviatrix Gateway’s VPC/VNet.

   1. Under Core Infrastructure, go to Networking and click Virtual Cloud Networks.

   2. Click your VCN.

   3. Select the desired security list(s) associated with your subnets.

   4. Click Edit All Rules.

   5. In Allowed Rule for Ingress section, enter the following values to create a rule to allow incoming traffic from Aviatrix Gateway’s VPC/VNet.

      Field	Description
      Source Type	CIDR
      Source CIDR	Aviatrix GW’s VPC/VNet CIDR (172.19.0.0/16 in this example)
      IP Protocols	All Protocols

      

   6. In Allowed Rule for Egress section, enter the following values to create a rule to allow outgoing traffic to the Aviatrix Gateway’s VPC/VNet.

      Field	Description
      Destination Type	CIDR
      Destination CIDR	Aviatrix GW’s VPC/VNet CIDR (172.19.0.0/16 in this example)
      IP Protocols	All Protocols

      

3. Create a CPE object.

   In this task, we create the CPE object, which is a logical representation of the Aviatrix Gateway.

   1. Under Core Infrastructure, go to Networking and click Customer-Premises Equipment.

   2. Click Create Customer-Premises Equipment.

   3. Enter the following values and click Create.

      Field	Description
      Create in Compartment	Leave as is (the VCN’s compartment)
      Name	A descriptive name for the CPE object
      IP Address	Public IP address of Aviatrix Gateway
      Tags	Optional

      

4. From the DRG, create an IPsec connection to the CPE object.

   1. Under Core Infrastructure, go to Networking and click Dynamic Routing Gateways.

   2. Click the DRG created earlier.

   3. Click Create IPsec Connection.

   4. Enter the following values and click Create IPsec Connection.

      Field	Description
      Create in Compartment	Leave as is (the VCN’s compartment)
      Name	A descriptive name for the IPsec connection
      Customer-Premises Equipment Compartment	Leave as is (the VCN’s compartment)
      Customer-Premises Equipment	Select the CPE object created earlier
      Static Route CIDR	Aviatrix GW’s VPC/VNet CIDR (172.19.0.0/16 in this example)
      Tags	Optional

      

   5. Once the IPsec connection enters the Available state, click the Action icon (three dots), and then click Tunnel Information. Please copy the IP Address of the VPN headend and the Shared Secret for configuring a Site2Cloud connection at the Aviatrix Controller.

      

5. Log in to the Aviatrix Controller.

6. Follow the steps in this guide. Use this table for specific field values.

   Field	Description
   VPC ID/VNet Name	Select the Aviatrix Gateway’s VPC/VNet
   Connection Type	Unmapped
   Connection Name	A descriptive name for the Site2Cloud connection
   Remote Gateway Type	Oracle
   Tunnel Type	UDP
   Encryption over ExpressRoute/ Direct Connect	Unchecked
   Enable HA	Unchecked
   Primary Cloud Gateway	Select the desired Aviatrix Gateway
   Remote Gateway IP Address	Enter the IP Address copied from Oracle IPsec connection
   Pre-shared Key	Enter the Shared Secret copied from Oracle IPsec connection
   Remote Subnet	Enter Oracle VCN’s CIDR (10.1.1.0/24 in this example)
   Local Subnet	Enter Aviatrix Gateway’s VPC/VNet CIDR (Or leave it blank)

   

Test

Once complete, test the communication using the tunnel by sending traffic between instances in the Aviatrix Gateway’s VPC/VNet and Oracle VCN.

Log in to the Aviatrix Controller and go to the Site2Cloud page. Verify that the Site2Cloud connection created above is “Up” in Status.

Troubleshooting

Wait 2-3 minutes for the tunnel to come up. If it does not come up within that time, check the IP addresses to confirm they are accurate. Additional troubleshooting is available in the Diagnostics tab.

Appendix: Enable HA

You can enable HA for an Aviatrix Site2Cloud connection to Oracle DRG. Please add following extra steps to the configuration.

Creating an Aviatrix HA Gateway

Before creating a Site2Cloud connection, follow this guide’s Backup Gateway and Tunnel HA section to create Aviatrix HA gateway in the same VPC/VNet.

Creating a Second IPsec Connection Between the Same DRG and Aviatrix HA Gateway

From the Oracle Cloud console, create a second IPsec connection between the same DRG and Aviatrix HA Gateway.

1. Create a new CPE at Oracle Cloud Console for the Aviatrix HA Gateway:

   Field	Description
   Create in Compartment	Leave as is (the VCN’s compartment)
   Name	A descriptive name for the second CPE object
   IP Address	Public IP address of Aviatrix HA Gateway
   Tags	Optional

2. Create a new IPsec connection at Oracle Cloud Console for the Aviatrix HA Gateway:

   Field	Description
   Create in Compartment	Leave as is (the VCN’s compartment)
   Name	A descriptive name for the second IPsec connection
   Customer-Premises Equipment Compartment	Leave as is (the VCN’s compartment)
   Customer-Premises Equipment	Select the second CPE object created earlier
   Static Route CIDR	Aviatrix GW’s VPC/VNet CIDR (172.19.0.0/16 in this example)
   Tags	Optional

3. Once the second IPsec connection enters the Available state, click the Action icon (three dots), and then click Tunnel Information. Please copy the IP Address of the VPN headend and the Shared Secret.

Create Aviatrix Site2Cloud Connection with HA

From the Aviatrix Controller > Site2Cloud page, click + Add New. Under Add a New Connection, make sure the Enable HA checkbox is marked.

Additional fields are displayed when checked. All other fields should have the same values as corresponding ones without HA.

Field	Description
Backup Gateway	Select the Aviatrix HA Gateway just created
Remote Gateway IP Address(Backup)	Enter the IP Address copied from the second IPsec connection
Pre-shared Key(Backup)	Enter the Shared Secret copied from the second IPsec connection