Specifications

IPv4 and IPv6 Internet and WAN Settings
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ProSAFE Gigabit Quad WAN SSL VPN Firewall SRX5308
To use a redundant ISP link for backup purposes, ensure that the backup WAN interface has
already been configured. Then select the WAN interface that should function as the primary
link for this mode, and configure the WAN failure detection method on the WAN Mode screen
to support auto-rollover.
When the VPN firewall is configured in auto-rollover mode, it uses the WAN failure detection
method to detect the status of the primary link connection at regular intervals. For IPv6
interfaces, the VPN firewall detects link failure by sending a ping request to an IP address
From the primary WAN interface, ping requests are sent to the specified IP address. If replies
are not received, after a specified number of retries, the primary W
AN interface is considered
down and a rollover to the backup W
AN interface occurs. When the primary WAN interface
comes back up, another rollover occurs from the backup WAN interface back to the primary
WAN interface. WAN failure detection applies only to the primary WAN interface, that is, it
monitors the primary link only.
Configure Auto-Rollover Mode for IPv6 Interfaces
 To configure auto-rollover mode:
1. Select Network Configuration > WAN Settings > W
AN Mode. The WAN Mode screen
displays:
Figure 42.
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 W
AN interface. The other WAN interfaces become disabled.
c. Select the Auto Rollover check box.
d. From the corresponding drop-down list on the right, select a W
AN interface to
function as the backup W
AN interface.