Billion Electric Company BiGuard 50G - Manual (Page 32)

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VPN provides a flexible, cost-efficient, and reliable way for companies of all sizes to
stay connected. One of the most important steps in setting up a VPN is proper
planning. The following sections demonstrate the various ways of using BiGuard
50G to setup your VPN.
2.6.2 VPN Planning - Fail Over
Configuring your VPN with Fail Over allows BiGuard 50G to automatically default to
WAN2 should WAN1 fail.
Because the dynamic domain name biguard.billion.com is configured for both WAN1
and WAN2, the active WAN port will announce the domain name through the WAN IP
address. The remote gateway will then be able to connect to the VPN through the
domain name.
In this Gateway to Gateway example, BiGuard 50G is communicating to a remote