Netgear FVS336G FVS336G Reference Manual - Page 222
VPN Gateway-to-Gateway: Dual Gateway WAN Ports for Load Balancing
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ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336G Reference Manual After a rollover of a gateway WAN port, the previously inactive gateway WAN port becomes the active port (port WAN_A2 in this example) and one of the gateway VPN firewalls must reestablish the VPN tunnel. Figure C-15 The purpose of the fully-qualified domain names is this case is to toggle the domain name of the failed-over gateway firewall between the IP addresses of the active WAN port (i.e., WAN_A1 and WAN _A2 in this example) so that the other end of the tunnel has a known gateway IP address to establish or re-establish a VPN tunnel. VPN Gateway-to-Gateway: Dual Gateway WAN Ports for Load Balancing In the case of the dual WAN ports on the gateway VPN firewall, either of the gateway WAN ports at one end can be programmed in advance to initiate the VPN tunnel with the appropriate gateway WAN port at the other end as necessary to manage the loads of the gateway WAN ports because the IP addresses of the WAN ports are known in advance. Figure C-16 C-16 Network Planning for Dual WAN Ports v1.0, March 2009