Netgear FVS336G-100NAS Reference Manual - Page 211
The Roll-over Case for Firewalls With Dual WAN Ports, Load balancing
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ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual The Roll-over Case for Firewalls With Dual WAN Ports Rollover (Figure C-2) for the dual WAN port case is different from the single gateway WAN port case when specifying the IP address. Only one WAN port is active at a time and when it rolls over, the IP address of the active WAN port always changes. Hence, the use of a fully-qualified domain name is always required, even when the IP address of each WAN port is fixed. Figure C-2 Features such as multiple exposed hosts are not supported when using dual WAN port rollover because the IP addresses of each WAN port must be in the identical range of fixed addresses. The Load Balancing Case for Firewalls With Dual WAN Ports Load balancing (Figure C-3) for the dual WAN port case is similar to the single WAN port case when specifying the IP address. Each IP address is either fixed or dynamic based on the ISP: fullyqualified domain names must be used when the IP address is dynamic and are optional when the IP address is static. Figure C-3 Network Planning for Dual WAN Ports C-7 v1.0, October 2007