D-Link NetDefend DFL-210 User Manual page 124

4.2.1. The Principles of Routing
ARP queries sent to this address. A special section below explains this parameter in more depth.
Local IP Address and Gateway are mutually exclusive and either one or the other should be
specified.
• Metric
This is a metric value assigned to the route and is used as a weight when performing
comparisons between alternate routes. If two routes are equivalent but have different metric
values then the route with the lowest metric value is taken.
The metric value is also used by Route Failover and Route Load Balancing.
For more information, see Section 4.4, "Route Load Balancing" and Section 4.2.3, "Route
Failover".
A Typical Routing Scenario
The diagram below illustrates a typical D-Link Firewall scenario:
In the above diagram, the LAN interface is connected to the network 192.168.0.0/24 and the DMZ
interface is connected to the network 10.4.0.0/16. The WAN interface is connected to the network
195.66.77.0/24 and the address of the ISP gateway to the public Internet is 195.66.77.4.
The associated routing table for this would be as follows:
Route #
1
2
3
4
The above routing table provides the following information:
Interface Destination
lan 192.168.0.0/24
dmz 10.4.0.0/16
wan 195.66.77.0/24
wan
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Chapter 4. Routing
Gateway
all-nets 195.66.77.4