ZyXEL Communications Prestige 314 PLUS - Manual (Page 144)

Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch
10-2 Traffic Redirect
Figure 10-1 Traffic Redirect WAN Setup
The following network topology allows you to avoid triangle route security holes when the backup gateway
is connected to the LAN. Use IP alias to configure the LAN into two or three logical networks with the
Prestige itself as the gateway for each LAN network. Put the protected LAN in one subnet (Subnet 1 in the
following figure) and the backup gateway in another subnet (Subnet 2). Configure a LAN to LAN/Prestige
firewall rule that forwards packets from the protected LAN (Subnet 1) to the backup gateway (Subnet 2).
Figure 10-2 Traffic Redirect LAN Setup