110 Chapter 7 WAN screens
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Figure 27 Traffic Redirect WAN Setup
The network topology illustrated in Figure 28 avoids triangle route security issues
when the backup gateway is connected to the LAN. Use IP alias to configure the
LAN into two or three logical networks with the BCM50a Integrated Router itself
as the gateway for each LAN network. Put the protected LAN in one subnet
(Subnet 1 in Figure 28) and the backup gateway in another subnet (Subnet 2).
Configure a LAN to LAN/BCM50a Integrated Router firewall rule that forwards
packets from the protected LAN (Subnet 1) to the backup gateway (Subnet 2).
Figure 28 Traffic Redirect LAN Setup
BCM50a Integrated Router
BCM50a Integrated Router