Configure The Edge For Serial Modem Failover - Watchguard Firebox X15 User Manual

Network Settings
2. Select the Enable failover using the Ethernet (WAN2) interface check box.
3. Type the IP addresses of the hosts to ping for the WAN1 (external) and WAN2 (failover) interfaces.
The Firebox X Edge will send pings to the IP addresses you type here. If pings to the host on that
network are not successful, the Edge starts the failover. You control the frequency of pings in the fields
below.
4. Type the number of seconds between pings and the number of seconds to wait for a reply.
5. Type the maximum number of pings before timeout in the No Reply Limit field.
6. Type the number of successful pings that must be made before the Firebox X Edge uses the WAN1
interface again in the Ping replies needed for failback field.

Configure the Edge for serial modem failover

1. From the navigation bar, select Network > External. If you have an Edge Pro license, you see the
options to configure your Edge with a multi-WAN configuration.
2. Select the Use WAN Failover check box.
3. After you configure WAN 1, from the Failover to this interface drop-down list, select Modem.
4. Complete the Modem (Serial Port) Configuration settings as described in the topics in this section.
5. The Edge sends regular pings to an IP address you specify to check for interface connectivity. Below
Failover Settings, type the IP addresses you want the Edge to ping for the WAN1 (external) and WAN2
(failover) interfaces in the correct fields.
6. In the Ping interval text box, type the frequency at which you want the Firebox to send pings to check
for interface connectivity.
7. In the Reply timeout text box, type the number of seconds you want the Edge to wait for a reply. If
there is no response before this timeout occurs, the ping fails.
8. In the No reply limit text box, type the number of failed pings before timeout occurs. When this limit
is reached, WAN failover occurs.
9. In the Ping replies needed for failback text box, type the number of successful pings that must be
made before the Edge uses the WAN1 interface again.
98 Firebox X Edge e-Series