In the following sections, you will learn about the OSPF metric and how it is calculated.
Calculating the OSPF Metric
The OSPF metric is commonly referred to as the cost. The cost is derived from the bandwidth of a link using the formula 108 / bandwidth (in bps). This means that different links are assigned different cost values, depending on their bandwidth. Using this formula, the OSPF cost of a 10Mbps Ethernet interface would be calculated as follows:
- Cost = 108 / bandwidth (bps)
- Cost = 100 000 000 / 10 000 000
- Cost = 10
Using . . .
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