>I notice that people often use the terms "cost" and "metric"
>interchangeably. Are they one in the same?
>
>Chris

The usage, as you correctly observe, is often sloppy.  In the OSPF 
context, however, costs are associated with interfaces, while metrics 
are associated with routes.  At least for an intra-area route, the 
metric is the sum of interface costs.

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