ZyXEL Communications 792H manual Configuring WAN Backup, Traffic Redirect LAN Setup

Prestige 792H G.SHDSL Router

The following network topology allows you to avoid triangle route security issues when the backup gateway is connected to the LAN or DMZ. 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 filters that allow packets from the protected LAN (Subnet 1) to the backup gateway (Subnet 2).

Figure 5-4 Traffic Redirect LAN Setup

5.7Configuring WAN Backup

The WAN Backup port or CON/AUX port can be used in reserve, if the broadband connection to the WAN port fails. To set up the auxiliary port (WAN Backup or CON/AUX) for use in the event that the regular WAN connection is dropped, first make sure you have set up the switch and port connection (see the Quick Start Guide for Hardware Installation), then configure:

1.WAN Setup (see section 5.5)

2.WAN Backup Setup (see below)

3.Advanced WAN Setup (see section 5.8)

WAN 5-9