8

WAN Screens

This chapter describes how to configure WAN settings.

8.1WAN Overview

•Use the Route screen to configure route priority for the ZyWALL.

•Use the WAN screen to configure the WAN port for Internet access on the ZyWALL.

•Use the Traffic Redirect screen to configure an alternative gateway.

•Use the Dial Backup screen to configure the backup WAN dial-up connection.

8.2TCP/IP Priority (Metric)

The metric represents the "cost of transmission". A router determines the best route for transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the measurement of cost, with a minimum of "1" for directly connected networks. The number must be between "1" and "15"; a number greater than "15" means the link is down. The smaller the number, the lower the "cost".

1The metric sets the priority for the ZyWALL's routes to the Internet. Each route must have a unique metric.

2The priorities of the WAN port routes must always be higher than the dial-backup and traffic redirect route priorities.

If the WAN port route has a metric of "1" and the traffic-redirect route has a metric of "2" and dial-backup route has a metric of "3", then the WAN port route acts as the primary default route. If the WAN port route fails to connect to the Internet, the ZyWALL tries the traffic- redirect route next. In the same manner, the ZyWALL uses the dial-backup route if the traffic- redirect route also fails.

The dial-backup or traffic redirect routes cannot take priority over the WAN routes.

8.3 WAN Route

Click NETWORK > WAN to open the Route screen. Use this screen to configure the priorities of the ZyWALL’s routes and settings for Windows Networking traffic.

 

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ZyWALL 2 Plus User’s Guide