Configuring Load Balancing - NETGEAR FVS336Gv1 - ProSafe Dual WAN Gigabit Firewall Reference Manual

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual
2. In the Port Mode section, select Auto-Rollover Using WAN port.
3. From the pull-down menu, choose which WAN port will act as the primary link for this mode.
4. In the WAN Failure Detection Method section, select one of the following detection failure
methods:
• DNS lookup using ISP DNS Servers. DNS queries are sent to the DNS server configured
on the WAN ISP screens (see
• DNS lookup using this DNS Server. Enter a public DNS server. DNS queries are sent to
this server through the WAN interface being monitored.
• Ping to this IP addresses. Enter a public IP address that will not reject the Ping request
and will not consider Ping traffic to be abusive. Queries are sent to this server through the
WAN interface being monitored.
5. Enter a Retry Interval in seconds. The DNS query or Ping is sent periodically after every test
period. The default test period is 30 seconds.
6. Enter the Failover after count. The WAN interface is considered down after the configured
number of queries have failed to elicit a reply. The rollover link is brought up after this. The
Failover default is 4 failures.
The default time to roll over after the primary WAN interface fails is 2 minutes (a 30-second
minimum test period for a minimum of 4 tests).
7. Click Apply to save your settings.
Once a rollover occurs, an alert will be generated (see
Alerts" on page 4-33). When the VPN firewall detects that the failed primary WAN interface has
been restored, it will automatically rollover again to the primary WAN interface. Alternatively,
you can manually force traffic back on the original primary WAN interface by reapplying the
Auto-Rollover settings on the WAN Mode screen.

Configuring Load Balancing

To use multiple ISP links simultaneously, select Load Balancing. In Load Balancing mode, either
WAN port will carry any outbound protocol unless protocol binding is configured. When a
protocol is bound to a particular WAN port, all outgoing traffic of that protocol will be directed to
the bound WAN port. For example, if the HTTPS protocol is bound to WAN1 and the FTP
protocol is bound to WAN2, then the VPN firewall will automatically route all outbound HTTPS
traffic from the computers on the LAN through the WAN1 port. All outbound FTP traffic will be
routed through the WAN2 port.
2-14
"Configuring the Internet Connections" on page
"E-Mail Notifications of Event Logs and
Connecting the FVS336G to the Internet
v1.0, January 2010
2-4).