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).

gw2drg

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.

Create 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. You will need this gateway’s public IP address and its VPC 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 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 CIDR (172.19.0.0/16 in this example)
      Target Dynamic Routing Gateway Select the desired existing DRG

    vcn_route_table

  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 and one egress rule for traffic destinating to the Aviatrix Gateway’s VPC.

    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

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

      vcn_security_rule_ingress

    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

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

      vcn_security_rule_egress

  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 the Create button

      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

      cpe

  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 button

      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 CIDR (172.19.0.0/16 in this example)
      Tags Optional

      ipsec_connection

    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.

      ipsec_info

  5. Login to 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
    Connection Type Unmapped
    Connection Name A descriptive name for the site2cloud connection
    Remote Gateway Type Oracle
    Tunnel Type UDP
    Encryption over ExpressRoute/ DirectConnect 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 CIDR (Or leave it blank)

    s2c_config

Test

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

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

s2c_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.

gw2drg-ha

Create 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.

From 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 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 UI -> Site2Cloud page, click + Add New. Under Add a New Connection, make sure Enable HA is checked.

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