Specifying Filter Driver Binding Relationships
In a network driver INF file, the UpperRange entry lists the possible upper bindings and the LowerRange entry lists the possible lower bindings. These entries can contain various system-defined values.
For filter drivers, you must set the value of the UpperRange and LowerRange entries to noupper and nolower, respectively. The following example illustrates these INF file entries for a filter driver.
HKR, Ndi\Interfaces,UpperRange,,"noupper" HKR, Ndi\Interfaces,LowerRange,,"nolower"
In a filter driver, the FilterMediaTypes entry in the filter INF file defines the driver's bindings to other drivers. FilterMediaTypes specifies the media types that the filter driver services. For a list of possible media types, see the list of Microsoft-supplied LowerRange values in Specifying Binding Interfaces. The following example illustrates a FilterMediaTypes entry for a filter driver.
HKR, Ndi\Interfaces, FilterMediaTypes,,"ethernet"
When the computer loads a filter driver, the driver is inserted into all of the existing protocol-to-adapter bindings, depending on the media types that FilterMediaTypes lists.