Aviatrix Gateway to Oracle DRG
This document describes how to configure an IPsec tunnel between an Aviatrix Gateway and an Oracle Dynamic Routing Gateway (DRG).
![gw2drg](_images/gw2drg.png)
Deployment
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
Prerequisites
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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.
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Under Core Infrastructure, go to Networking and click Virtual Cloud Networks.
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Click your VCN.
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Select the desired route table(s) for your VCN.
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Click Edit Route Rules.
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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
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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.
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Under Core Infrastructure, go to Networking and click Virtual Cloud Networks.
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Click your VCN.
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Select the desired security list(s) associated with your subnets.
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Click Edit All Rules.
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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
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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
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Create a CPE object.
In this task, we create the CPE object, which is a logical representation of the Aviatrix Gateway.
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Under Core Infrastructure, go to Networking and click Customer-Premises Equipment.
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Click Create Customer-Premises Equipment.
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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
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From the DRG, create an IPsec connection to the CPE object.
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Under Core Infrastructure, go to Networking and click Dynamic Routing Gateways.
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Click the DRG created earlier.
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Click Create IPsec Connection.
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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
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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.
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Log in to the Aviatrix Controller.
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Follow the steps in Site2Cloud Tutorial. 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.
![s2c-status](_images/s2c-status1.png)
Troubleshoot
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](_images/gw2drg-ha.png)
Creating an Aviatrix HA Gateway
Before creating a Site2Cloud connection, follow https:/docs.aviatrix.com/Solutions/gateway_ha.html[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.
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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
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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
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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 |
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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 |