NETGEAR STM150EW-100NAS manual Configure Auto-Rollover Mode,  To configure auto-rollover mode

ProSecure Unified Threat Management (UTM) Appliance

When the UTM is configured in auto-rollover mode, it uses the selected WAN failure detection method to detect the status of the primary link connection at regular intervals. Link failure is detected in one of the following ways:

•DNS queries sent to a DNS server

•Ping request sent to an IP address

•None (no failure detection is performed)

From the primary WAN interface, DNS queries or ping requests are sent to the specified IP address. If replies are not received after a specified number of retries, the primary WAN interface is considered down, and a rollover to the backup WAN interface occurs. When the primary WAN interface comes back up, another rollover occurs from the backup WAN interface back to the primary WAN interface. The WAN failure detection method that you select applies only to the primary WAN interface, that is, it monitors the primary link only.

Configure Auto-Rollover Mode

To configure auto-rollover mode:

1.Select Network Config > WAN Settings > WAN Mode. The WAN Mode screen displays:

Figure 45.

2.In the Load Balancing Settings section of the screen, configure the following settings:

a.Select the Primary WAN Mode radio button.

b.From the corresponding drop-down list on the right, select a WAN interface to function as the primary WAN interface. The other WAN interface or interfaces become disabled.

c.Select the Auto Rollover check box.

d.From the corresponding drop-down list on the right, select a WAN interface to function as the backup WAN interface.

Manually Configure Internet and WAN Settings

83