Set Up NAT Swing for Failover Appliance Configuration

Configure Networking on the Appliances

Networking > IP Configuration
NAT Configure Primary Appliance

NAT Swing Method of Failover Diagram

Log into the /appliance administrative interface for your primary appliance, accessible from either its unique hostname or IP address (e.g., https://site1. example.com/appliance or https://192.168.1.50/appliance).

Go to the Networking > IP Configuration page. If you have not already configured your static IP, click Add New IP and enter the static IP and subnet mask, making sure to keep this IP Enabled. Then click Save Changes.

Because NAT directs the IP for the support site domain, support. example.com, to this IP address, this is the primary appliance.

Log into the /appliance administrative interface for your backup appliance, accessible from either its unique hostname or IP address (e.g., https://site2. example.com/appliance or https://192.168.1.51/appliance).

Go to the Networking > IP Configuration page. If you have not already configured your static IP, click Add New IP and enter the static IP and subnet mask, making sure to keep this IP Enabled. Then click Save Changes.

In the event that you encounter a potential failover situation, try to reserve failing over as an absolute last resort. If the primary appliance, Appliance A, is down, it is often quicker and has less of an impact to bring it back up rather than failing over to the backup appliance, Appliance B.

To failover, access the NAT controller and locate the NAT entry for your support site (e.g., support.example.com). Edit the entry to point to the backup IP. Click Become Primary from the backup appliance Failover page. As soon as the NAT change is made, you can resume normal support activity. All requests to your support site will be served by the backup appliance.

Example NAT Method Configuration

  Primary Appliance Backup Appliance
Definition The appliance used during normal operations. The appliance used during failover operations.
Private IP Address 192.168.1.50 192.168.1.51
Hostname site1.example.com site2.example.com
Site Name support.example.com (Translated to 192.168.1.50 or 192.168.1.51 by NAT Server)