Interface metric: |
Use the Add, Edit, and Remove buttons in the Default Gateways section to add, modify, or remove gateways. In small networks, there is often only one gateway, but in larger networks, multiple gateways are used to provide fault tolerance and redundancy, enabling users to connect outside their local network should one gateway become unavailable. Click Add to specify the IP address of another gateway, or select an existing address and click Edit or Remove to respectively modify or remove the selected gateway. The metric value of a gateway specifies the relative cost of connecting through the selected gateway. When routing is possible through more than one gateway, the one with the lowest metric is used by default.
Tip Here's an example of when the metric value comes into play: Assume your network has two connections to the Internet. Connection A is the one you want to use most because you pay j a flat, monthly fee for it. Connection B is charged by bandwidth usage, and you only want to use B when A is unavailable. Therefore, you'd assign a metric of 1 to A and a higher value to B to ensure that traffic always goes through A if it's available.
The interface metric value on the IP Settings page specifies the relative cost of using the selected network interface. The default value is 1. This setting performs the same function for multi-homed systems (those with multiple network interfaces) as the metric value assigned to the default gateway(s). However, this value determines which interface is used to route traffic when multiple interfaces can be used to route the traffic. The interface with the lowest metric is used by default.
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