Netgear FVS336G FVS336G Reference Manual - Page 41
Configuring Load Balancing, Failover after, Apply, WAN Mode, Port Mode, Load Balancing
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ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual 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 "E-Mail Notifications of Event Logs and 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 in the WAN Mode menu. 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. Protocol binding Protocol binding addresses two issues: • Segregation of traffic between links that are not of the same speed. High volume traffic can be routed through the WAN port connected to a high speed link and low volume traffic can be routed through the WAN port connected to the low speed link. • Continuity of source IP address for secure connections. Some services, particularly HTTPS, will cease responding when a client's source IP address changes shortly after a session has been established. To configure the dual WAN ports for load balancing with protocol binding: 1. Select Network >WAN Settings, and click the WAN Mode tab. 2. In the Port Mode section, select Load Balancing. Connecting the FVS336G to the Internet v1.2, June 2008 2-15