Netgear FVX538 FVX538 Reference Manual - Page 207
VPN Gateway-to-Gateway: Dual Gateway WAN Ports for Improved Reliability
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ProSafe VPN Firewall 200 FVX538 Reference Manual 10.5.6.0/24 Gateway-to-Gateway Example (Single WAN Ports) 172.23.9.0/24 LAN IP 10.5.6.1 Gateway A VPN Router (at office A) WAN IP FQDN netgear.dyndns.org WAN IP 22.23.24.25 Fully-Qualified Domain Names (FQDN) - optional for Fixed IP addresses - required for Dynamic IP addresses Gateway B VPN Router (at office B) LAN IP 172.23.9.1 Figure C-13 The IP address of the gateway WAN ports can be either fixed or dynamic. If an IP address is dynamic, a fully-qualified domain name must be used. If an IP address is fixed, a fully-qualified domain name is optional. VPN Gateway-to-Gateway: Dual Gateway WAN Ports for Improved Reliability In the case of the dual WAN ports on the gateway VPN firewall (Figure C-14), either of the gateway WAN ports at one end can initiate the VPN tunnel with the appropriate gateway WAN port at the other end as necessary to balance the loads of the gateway WAN ports because the IP addresses of the WAN ports are known in advance. In this example, port WAN_A1 is active and port WAN_A2 is inactive at Gateway A; port WAN_B1 is active and port WAN_B2 is inactive at Gateway B. 10.5.6.0/24 Gateway-to-Gateway Example (Dual WAN Ports, Before Rollover) 172.23.9.0/24 LAN IP 10.5.6.1 Gateway A VPN Router (at office A) WAN_A1 IP netgearA.dyndns.org WAN_B1 IP netgearB.dyndns.org Gateway B X X WAN_A2 port inactive X X WAN_B2 port inactive WAN_A2 IP (N/A) WAN_B2 IP (N/A) VPN Router Fully-Qualified Domain Names (FQDN) (at office B) - required for Fixed IP addresses - required for Dynamic IP addresses LAN IP 172.23.9.1 Figure C-14 Network Planning for Dual WAN Ports v1.0, August 2006 C-15